sporlan adlse-2

DISCHARGE BYPASS VALVESfor SYSTEM CAPACITY CONTROL

September 1994 / BULLETIN 90-40

These factors must be considered in the application andselection of all DBVs. Therefore, the following sectionscompletely explain how the various factors are utilized indetermining the proper valve to use and the correct methodof application.

APPLICATIONSporlan Discharge Bypass Valves provide an economicalmethod of compressor capacity control in place of cylinderunloaders or the handling of unloading requirements be-low the last step of cylinder unloading.

On air conditioning systems, the minimum allowableevaporating temperature that will avoid coil icing, dependson evaporator design and the amount of air passing overthe coil. The refrigerant temperature may be below 32Fbut coil icing will not usually occur with high air velocitiessince the external surface temperature of the tube will beabove 32F. For most air conditioning systems the minimumevaporating temperature is 20 to 25F. However, when airvelocities are reduced considerably, the minimumevaporating temperature should be 26 to 28F .

Sporlan Discharge Bypass Valves can be set so they startto open at an evaporating pressure equivalent to 32F satu-ration temperature. Therefore, they would be at their ratedcapacity at 26F evaporating temperature.

On refrigeration systems discharge bypass valves are usedto prevent the suction pressure from going below the mini-mum value recommended by the compressor manufacturer.

Page 2 / Bulletin 90-40

SYSTEM CAPACITY CONTROLOn many air conditioning and refrigeration systems it isdesirable to limit the minimum evaporating pressure dur-ing periods of low load either to prevent coil icing or toavoid operating the compressor at a lower suction pres-sure than it was designed to operate. Various methods havebeen used to achieve this result integral cylinder un-loading, gas engines with variable speed control, or mul-tiple smaller systems. Compressor cylinder unloading isused extensively on larger systems but is too costly on smallequipment, usually 10 hp and below. Cycling the compres-sor with a low pressure cutout control has had widespreadusage but is being re-evaluated for three reasons.

1. On-off control on air conditioning systems is uncom-fortable and does a poor job of humidity control.

2. Compressor cycling reduces equipment life.3. In most cases, compressor cycling is uneconomical

because of peak load demand charges.

One method that offers a practical and economical solu-tion to the problem is to bypass a portion of the hot dis-charge gas directly into the low side. This is done by a modu-lating control valve commonly called a Discharge By-pass Valve. This valve, which opens on a decrease in suc-tion pressure, can be set to automatically maintain a de-sired minimum evaporating pressure regardless of thedecrease in evaporator load.

Sporlan manufactures a complete line of Discharge BypassValves the models discussed in this bulletin plus manyspecial designs, including non-adjustable models, for spe-cific customer requirements. Contact your Sporlan Repre-sentative for assistance with special needs.

OPERATIONSporlan Discharge Bypass Valves (DBV) respond to changesin downstream or suction pressure. See Figure 1. Whenthe evaporating pressure is above the valve setting, thevalve remains closed. As the suction pressure drops belowthe valve setting, the valve responds and begins to open.As with all modulating type valves, the amount of openingis proportional to the change in the variable being controlled in this case the suction pressure. As the suction pressurecontinues to drop, the valve continues to open farther untilthe limit of the valve stroke is reached. However, on normalapplications there is not sufficient pressure changeavailable to open these valves to the limit of their stroke.The amount of pressure change available from the point atwhich it is desired to have the valve closed to the point atwhich it is to be open varies widely with the type ofrefrigerant used and the evaporating temperature. For thisreason Sporlan Discharge Bypass Valves are rated on thebasis of allowable evaporator temperature change fromclosed position to rated opening. A 6F change is considerednormal for most applications and is the basis of our capacityratings. Multipliers for other temperature changes aregiven in the Selection Procedures.

FOR USE ON REFRIGERATION and/or AIR CONDITIONING SYSTEMS ONLYBulletin 90-40, September 1994, supersedes Bulletin 90-40, July 1986, and all prior publications.

Copyright 1994 By Sporlan Valve Company, Washington, MO

DiaphragmExternalEqualizer

Seat

PistonAssembly

U.S. Patent Number 3,402,566

Figure 1

AdjustingSpring

Bulletin 90-40 / Page 3

A typical application would be a low temperature compres-sor designed for operation at a minimum evaporating tem-perature on Refrigerant 22 of -40F. The required evapo-rating temperature at normal load conditions is -30F. Adischarge bypass valve would be selected which would startto open at the pressure equivalent to -34F and bypassenough hot gas at -40F to prevent a further decrease insuction pressure. Valve settings are discussed completelylater in this application section.

The discharge bypass valve is applied in a branch line offthe discharge line as close to the compressor as possible.The bypassed vapor can enter the low side at one of thefollowing locations:

1. To evaporator inlet with distributor.

2. To evaporator inlet without distributor.

3. To suction line.

Each is illustrated and discussed below. While Figures 2,3, and 4 show one type of discharge bypass valve, all typescan be used in place of the one shown.

BYPASS TO EVAPORATOR INLET WITH DISTRIBUTOR -This method of application, illustrated in Figure 2, pro-vides distinct advantages over the other methods, espe-cially for unitary or field built-up units where the high andlow side are close coupled.

Although, it is also applicable on systems with remote con-densing units, especially when the evaporator is locatedbelow the condensing unit (See discussion below).

The primary advantage of this method is that the systemthermostatic expansion valve will respond to the increasedsuperheat of the vapor leaving the evaporator and will pro-vide the liquid required for desuperheating. Also the evapo-rator serves as an excellent mixing chamber for the bypassedhot gas and the liquid-vapor mixture from the expansionvalve. This ensures a dry vapor reaching the compressorsuction. Oil return from the evaporator is also improved sincethe velocity in the evaporator is kept high by the hot gas.

Sporlan 1650R Series Distributor or ASC - To accomplishthis application, two methods are available:

1. Bypass to Sporlan 1650R series distributor with anauxiliary side connection.

2. Bypass to Sporlan ASC series Auxiliary Side Connector.

Method 1 is normally utilized on factory assembled or uni-tary units where hot gas bypass is initially designed intothe system. The 1650R series distributor allows the hotgas to enter downstream of the distributor nozzle. Method2 is applicable on field built-up systems or on existing sys-tems where the standard refrigerant distributor is alreadyinstalled on the evaporator.

Some caution is necessary in either of these methods. Ifthe distributor circuits are sized properly for normal cool-ing duty, the flow of hot gas through the circuits may causeexcessive pressure drop and/or noise. Therefore, it is rec-ommended that the distributor circuits be selected one sizelarger than for straight cooling duty. See Selection Proce-dures Section for selection information on this method ofhot gas bypass. For complete technical details on the 1650Rseries distributor and the ASC series Auxiliary Side Con-nector, refer to Bulletin 20-10 and supplemental bulletins.

Valve/Equipment Location and Piping - When the evapora-tor is located below the compressor on a remote system,bypass to the evaporator inlet is still the best method of hotgas bypass to insure good oil return to the compressor. Whenthis is done, the bypass valve and hot gas solenoid valve (ifused) must be located at the compressor rather than at theevaporator section. This will insure obtaining rated capac-ity from the bypass valve at the conditions for which it wasselected. If the evaporator is above or on the same level asthe compressor, this valve location will also eliminate thepossibility of hot gas condensing in the long bypass line andrunning back into the compressor during the off cycle.

Whenever hot gas bypass to the evaporator inlet is neces-sary for a system with two or more evaporator sectionseach with its own TEV (no liquid line solenoid valves) buthandling the same load, two methods may be used to avoidoperating interference between sections:

1. Use a separate discharge bypass valve for eachevaporator section.

2. Use one discharge bypass valve to feed two bypasslines each with a check valve between the bypassvalve and the evaporator section inlet. The checkvalves will prevent interaction between the TEVswhen the bypass valve is closed.

Externally Equalized Bypass Valves - Since the primaryfunction of the DBV is to maintain suction pressure, thecompressor suction pressure is the control pressure andmust be exerted on the underside of the valve diaphragm.When the DBV is applied as shown in Figure 2 where thereis an appreciable pressure drop between the valve outletand the compressor suction, the externally equalized valvemust be used. This is true because when the valve opens, asudden rise in pressure occurs at the valve outlet. This cre-ates a false control pressure, which would cause the inter-nally equalized valve to close.

Caution - Introduction of the bypassed gas between thethermostatic expansion valve and the distributor is notgenerally recommended because of the large pressure dropcaused by the hot gas flowing through the distributor nozzleor throat and the tube circuits, which have been sized fornormal cooling flow rates. Careful evaluation and testingshould precede any application where hot gas is bypassedbetween the TEV and the distributor.

BYPASS TO EVAPORATOR INLET WITHOUT DISTRIBUTOR -Many refrigeration systems and water chillers do not userefrigerant distributors but may require some method of

Figure 2

/ Bulletin 90-40

compressor capacity control. This type of application pro-vides the same advantages as bypassing hot gas to the evapo-rator inlet with a distributor. All information relating to by-passing hot gas to the evaporator inlet with a distributor,except that concerning distributors or ASCs, also applies tobypassing to the evaporator inlet without a distributor.

BYPASS TO SUCTION LINE - On many applications, it maybe necessary to bypass directly into the suction line. Thisis generally true of systems with multi-evaporators or re-mote condensing units, as well as on existing systems whereit is easier to connect to the suction line than the evapora-tor inlet. The latter situation involves systems fed by TEVsor capillary tubes. When hot gas is bypassed directly intothe suction line, the danger of overheating the compressorand trapping the oil in the evaporator exists. As the suc-tion temperatures rise, the discharge temperature likewisestarts to increase. This can cause breakdown of the oil andrefrigerant with the possible result being a compressorburnout. On close-coupled systems, this can be eliminatedby locating the main expansion valve bulb downstream ofthe bypass connection as illustrated in Figure 3.

Advantages and Disadvantages - The method illustratedin Figure 3 allows the application of hot gas bypass to anexisting system with only minor piping changes. And inmost cases, the operation of the system will be satisfactory.However, on some systems the interaction between the DBVand the TEV may result in undesirable hunting and poorsystem performance. Also, there may not be sufficient lengthof suction line available to get good mixing of the hot gasvapor and the cool evaporator vapor before reaching thebulb location. If at least 3 feet of suction line, preferablywith an elbow between the two locations, is not available,the method in Figure 4 is strongly recommended instead.This method offers added flexibility for multi-evaporatorsystems or remote systems because the hot gas bypass com-ponents can be located at the condensing unit. However,neither method (Figure 3 or 4) insures oil return unlessspecial care is taken in the system piping to accomplishsatisfactory oil return to the compressor from the low side.

Desuperheating Thermostatic Expansion Valve - On thoseapplications where the hot gas must be bypassed directlyinto the suction line downstream of the main expansionvalves bulb, an auxiliary thermostatic expansion valve -commonly called a desuperheating TEV or a liquid injec-tion valve - is required.

The purpose of this valve is to supply enough liquid refrig-erant to cool the hot discharge gas to the recommendedsuction temperature. Most compressor manufacturersspecify a maximum suction gas temperature of 65F. For

these requirements, special desuperheating thermostaticcharges are available which will control at the proper su-perheat to maintain the suction gas at or below 65F. Forapplications requiring suction gas temperatures apprecia-bly below 65F, contact Sporlan Valve Company or the com-pressor manufacturer for assistance. In all cases the maxi-mum permissible suction gas temperature published bythe compressor manufacturer must be followed. Thesespecial charges, along with the correct selection methods,are given in the Selection Procedures Section.

Figure 4 illustrates an externally equalized desuperheatingTEV. And in most cases it is the recommended selection.However, if the outlet piping from the expansion valve andthe bypass valve is adequately sized; and, the distance fromthe connection where the bypass line enters the suctionline to the compressor is close coupled, the internally equal-ized type may be used. However, if there is any doubt, usethe externally equalized valve. See Bulletin 10-9 for a com-plete analysis on this subject.

Valve/Equipment Location and Piping - As indicated earlier,the bypass valve and hot gas solenoid valve (if used) mustbe located as near to the compressor as possible to insureobtaining rated capacity from the DBV at the conditionsfor which it was selected. On some systems with remotecondensing units, the evaporator will be located below thecompressor. When this is the case, serious considerationshould be given to bypassing the hot gas to the evaporatorinlet to keep the compressor oil from being trapped in theevaporator or suction line. Consult with the compressormanufacturer for additional application data.

One of the most important points to remember when pipingthe discharge bypass valve and the desuperheatingthermostatic expansion valve is that good mixing must beobtained before reaching the bulb location. Otherwise, thesystem operation may become unstable and the thermostaticexpansion valve will hunt. This can be accomplished twoways: use a suction line accumulator downstream of bothconnections with the auxiliary thermostatic expansion valvebulb downstream of the accumulator; tee the liquid-vapormixture from the thermostatic expansion valve and the hotgas from the bypass valve together before connecting acommon line to the suction line. The latter method isillustrated in Figure 4.

Externally Equalized DBV - While an internally equalizedbypass valve can be used for most applications as illus-trated in Figure 3, the final selection depends on the spe-cific system. The deciding factor is the amount of pressuredrop between the bypass valve outlet and the compressorsuction. Since most applications (Figures 2 and 4) requirethe externally equalized valve, this model will be the mostreadily available one in the field. Therefore, it is suggestedthat in all cases, the externally equalized DBV be applied.

GENERAL APPLICATION FACTORSWhile the application discussion up to this point coversthe basic types of applications, several additional factorsmust be considered. These are discussed below as they applyto all methods illustrated in Figures 2, 3, and 4.

ADJUSTMENT RANGES/PRESSURE SETTINGS - Whileall the discharge bypass valves discussed in this bulletinare adjustable, there are two distinct types. The fully ad-justable type utilizes a spring assembly which can be fixed at

Figure 3

REFRIGERANT*VALVE OPENING

PRESSUREpsig

STANDARD VALVEADJUSTMENT

RANGE-psi12 30 25-3522 60 55-70

134a 30 25-35502 70 65-80


the desired pressure setting (opening pressure). This set-ting will not be affected by other factors such as ambientor hot gas temperatures. The ADRP(E)-3 and ADRH(E)-6are available with two adjustment ranges - 0/30 and 0/80psig. The standard factory settings for these are 20 and 60psig, respectively. The ADRI(E)-1-1/4 is available with a 0/55 psig range and the standard factory setting is 28 psig.Adjustment ranges of 0/75 and 0/100 are also available onspecial order.

The 0/30 psig range is intended primarily for refrigerationapplications, while the 0/80,0/55, 0/75 and 0/100 ranges aregenerally required for air conditioning systems. The capac-ity table shows the evaporating temperatures at which eachrange can be applied. Where capacities are given for boththe 0/30 and 0/80, the 0/30 psig range should be used be-cause of its greater capacity rating.

The second type, which are applicable on air conditioningsystems only, has limited adjustment ranges of 10 psi forRefrigerant 12 and Refrigerant 134a and 15 psi for Refrig-erant 22 and Refrigerant 502. This type utilizes an adjust-able bellows assembly in the remote bulb of an air chargedcap tube/remote bulb element. By changing the volumeof the remote bulb with the adjustment, pressure settingswithin the adjustment ranges can be set. Due to the aircharge, these models are affected by ambient temperaturesat the remote bulb. Therefore, it is necessary to locate theremote bulb in as nearly constant ambient as possible tomaintain a constant pressure setting. Figure 3 shows theremote bulb located in the return air. Any other locationthat has a nearly constant ambient temperature year-roundcan also be used. Since these models are set in 80F ambi-ent, any appreciable variation from this temperature willcause the pressure setting to vary. The actual pressure set-ting change is 1 psi for every 7F increase or decrease inthe ambient temperature.

The table below lists the standard pressure settings andadjustment ranges for these valves.

The fully adjustable type has the definite advantage of be-ing more flexible than the adjustable remote bulb type.However, the capacity ratings of the ADRHE-6 are consid-erably less than the ratings of the DRHE-6 adjustable re-mote bulb type. Therefore, when applying discharge bypassvalves, the specific system involved will help determinewhich valve type is the best one for the job.

PARALLELING VALVES - If the hot gas bypass requirementon any system is greater than the capacity of the largestdischarge bypass valve, these valves can be applied in par-allel. The pressure settings of the paralleled valves shouldbe the same to get the most sensitive performance. In allcases of this type, the piping to each valve should be identi-cal to keep the pressure drop across each valve the same.

PIPING SUGGESTIONS - Figures 2, 3, and 4 are piping sche-matics only to illustrate the general location of the dischargebypass valves in the system. Sporlan recommends that recog-nized piping references, such as equipment manufacturersliterature and the ASHRAE Handbook, be consulted for as-sistance with this subject. Sporlan is not responsible for sys-tem design, any damage arising from faulty system design,or for misapplication of its products. If these valves are ap-plied in any manner other than as described in this bulletin,the Sporlan warranty is void. Actual system piping must bedone so as to protect the compressor at all times. This includesprotection against overheating, slugging with liquid refriger-ant, and trapping of oil in various system locations.

The inlet connections on the discharge bypass valve shouldbe sized to match system piping requirements. If a hot gassolenoid valve is used, its connection size will help determinethe necessary connections on the bypass valve. Whetherpiping the hot gas to the evaporator inlet or the suction line,matching connections is easily done if all components arereviewed in light of the most efficient system operation: sideconnection on distributor or ASC, hot gas solenoid valve,discharge line, suction line, desuperheating TEV, etc.

Inlet strainers are available for all solder type bypass valves.Just as with any refrigerant flow control devices, the needfor an inlet strainer is a function of system cleanliness. Mois-ture and particles too small for the strainer are harmful tothe system and must also be removed. Therefore, it is rec-ommended that a Catch-All Filter-Drier be applied in theliquid line and suction line if required. See Bulletin 40-10.

HOT GAS SOLENOID VALVE - Each of the schematic draw-ings in this application section show a solenoid valve in ahot gas bypass line. On many systems it is desirable toapply a hot gas solenoid valve in the bypass line upstreamof the discharge bypass valve. Systems that operate on apump down cycle require a solenoid valve in the hot gasbypass line in addition to the liquid line solenoid valve.The valve is required since the bypass valve will open asthe suction pressure is reduced. The two solenoid valves,hot gas and liquid line, should be wired in parallel so theyare de-energized by a thermostat or any of the compressorsafety devices, after which the compressor will shut down.

Even if the system is not on a pump down cycle, it is usuallydesirable to provide some type of shut-off valve in the hotgas bypass line so that the system can be pumped down forservice.

When the hot gas is bypassed into the suction line, a hotgas solenoid valve is also needed if the compressor doesnot have an integral temperature protection device. Thevalve serves as a safety measure against an extremely high

Figure 4

*Normal factory setting for a valve selected to start bypassing at anevaporator rating temperature of 32 - 34F.

STANDARD PRESSURE SETTINGSfor Adjustable Remote Bulb Type on Air Conditioning Systems

/ Bulletin 90-40

superheat condition at the compressor suction. This condi-tion can occur if the system experiences a malfunction ofthe thermostatic expansion valve, which is serving todesuperheat the bypassed hot gas; or, if the system is shortof refrigerant. The hot gas solenoid valve is wired in serieswith a bi-metal thermostat fastened to the discharge lineclose to the compressor. This causes the solenoid valve toclose if the discharge line temperature becomes excessive.

Complete selection information is given in the SelectionProcedures Section.

DBV WITH OTHER PRESSURE REGULATING VALVES - Adischarge bypass valve can be applied on any system thatexperiences undesirable compressor cycling during peri-ods of low load. However, when other pressure regulatingvalves are also used, some consideration should be givento prevent undesirable operation. For example, when thebypass valve is required on a system with an evaporatorpressure regulating valve (ORIT or other type), less hunt-ing will probably occur if the hot gas is bypassed directly tothe suction line along with a desuperheating TEV. How-ever, this may leave oil trapped in the evaporator due tothe low velocity flow when the ORIT is throttled. There-fore depending on the specific system involved, the hot gasmay be bypassed either to the evaporator inlet or directlyto the suction line.

If the discharge bypass valve is required on a system witha crankcase pressure regulating valve (CRO or other type),the DBV can bypass to the low side at any one of the loca-tions shown in Figures 2, 3, or 4. And the decision onwhether an internal or external valve is required will de-pend on the method used. The pressure setting of the DBVmust be lower than the CRO valve setting for each valve tofunction properly.

Normally, when hot gas bypass is used for capacity controlduring periods of low load, the outdoor ambient drops be-low 70F. Therefore, all air cooled systems that utilize hotgas bypass for capacity control should have some type ofhead pressure control to maintain satisfactory performance.

For information on other Sporlan pressure regulating valvesrefer to the following bulletins: 90-10/Crankcase PressureRegulating Valves ... 90-20 and 90-20-1/Evaporator PressureRegulating Valves ... 90-30/Head Pressure Control Valves.

SPECIFICATIONSSporlan Discharge Bypass Valves utilize many of the provenconstruction features of our present line of thermostaticexpansion valves. The valves are constructed of the finestmaterials those best suited for the specific purpose in-tended for each valve component. This insures long life anddependable service.

Since there are numerous models available, valve designa-tions have been made distinctly different to aid in specify-ing each type properly. Refer to the Ordering Instructionson Page 12 for an explanation of the valve designations.

ELEMENT DESIGNATIONS - The table below lists the ele-ment and spring part numbers for each valve type. Whenordering any element, the adjustment range and the valvetype must be specified to insure receiving the correct element.

The fully adjustable elements for the ADRS(E)-2, ADRP(E)-3, and ADRHE-6 are available with either of two adjust-ment ranges, 0/30 or 0/80 psig. By merely changing the ad-justment spring in the element, either adjustment rangecan be obtained from one element. The adjustable elementfor the ADRI(E)-1-1/4 must be replaced if a different rangeof adjustment is required. However, prior to 1994, the ele-ment was integral and is not replaceable. In this case, theentire valve must be replaced.

The adjustable remote bulb elements contain a charge ofdry air as the operating pressure. The adjustability fea-ture is a valve assembly built into the remote bulb. Sincethe adjustment range is limited by the air pressure in theelement and bulb assembly, standard valves have been setup for air conditioning conditions only. However, specialadjustment ranges will be considered on special order. Con-tact your Sporlan Representative or Sporlan Valve Com-pany, Washington, Missouri.

The fully adjustable spring elements, A3-0/80 and A3-0/30,are interchangeable between the ADRPE and ADRHE valvemodels. The air charged elements are not interchange-able between the DRPE and DRHE valve models.

Specify desired Pressure Setting or Range of Adjustment.* Remote bulb element has 0.88" OD x 4.5" bulb with 5' of capillary tubing.

Other lengths are available on special order and are priced the same asfor special length TEV capillary tubing.

DISCHARGE BYPASS VALVE

REPLACEMENTELEMENT TYPE

FITSVALVETYPE

STANDARDADJUSTMENTRANGES - psig

Non-AdjustableDome Type

D-4- DRI-1-1/4Non-

Adjustable D-8- DRS-2 D-3P- DRP-3 D-3H- DRH-6

*Non-AdjustableRemote Bulb Type

R-8- DRS-2Non-

Adjustable R-3P- DRP-3 R-3H- DRH-6

*AdjustableRemote Bulb Type

B-3P- AR DRP-3 25/35, 32/44,55/70, 65/80

B-3H- AR DRH-6

AdjustableSpring Type

A-4- ADRI-1-1/4 0/55 A-8- ADRS-2

0/300/80 A-3- ADRP-3

A-3- ADRH-6

REPLACEMENT SPRINGS KITS

USED ONVALVETYPE

ELEMENT PARTNUMBERS

(Include StandardAdjustment Ranges)

ADJUSTMENT SPRINGS

PARTNUMBER

WIRESIZE

ADRS-2ADRSE-2

A-8-0/30 K-1800E-1 .156"

A-8-0/80 K-1800E-2 .112" and .178"ADRP-3ADRPE-3ADRHE-6

A-3-0/30 K-1800E-1 .156"

A-3-0/80 K-1800E-2 .112" and .178"


Standard External Equalizer connection is 1/4" ODF. 1/4" SAE Flare connection is available on request. The DRP(E)-3 adjustable remote bulb model is obsolete. It may be replaced by the ADRP(E)-3 adjustable model. Multiple combinations of straight through and angle configurations are available. Specify connection sizes and body configurations if other than standard. Air charges 0.88" OD x 4.50" bulb with 5' of capillary tubing. Other lengths are available on special order and are priced the same as for special length

TEV capillary tubing.

F

A

B

D E

C 4.50

0.88

B

D E

C

A

FDR ADR

DIMENSIONS

VALVE TYPE CONNECTIONSInches

StandardConnections in BOLD

DIMENSIONS - Inches WEIGHT - Pounds INLETSTRAINER

PartNumber

InternallyEqualized

ExternallyEqualized A B C D E F

SocketDepth Net Shipping

ADJUSTABLE MODELS

ADRI-1-1/4 ADRIE-1-1/4 3/8 ODF 4.86Max 1.79 1.38 1.69 1.33 1.94 0.31 1.25 1.50 1524-000

ADRS-2 ADRSE-2

3/8 ODF

6.44 2.50 1.94

1.44

2.75

0.312.00 2.25

877-31/2 ODF 1.37 0.37 877-45/8 ODF 1.50 0.50 877-53/8 SAE 1.69 1.75

2.25 2.50 NotAvailable1/2 SAE 1.87 1.94 5/8 SAE 2.06 2.12

ADRP-3 ADRPE-3

1/2 ODF

6.94 2.81 2.06

1.69 1.62

2.75

0.372.75 3.00 877-4

5/8 ODF 1.81 1.75 0.50 877-51/2 SAE 2.06 3.25 3.50 NotAvailable5/8 SAE 2.19

NotAvailable ADRHE-6

5/8 ODF7.06 2.88 1.88 4.62 2.75

0.503.50 4.00

877-57/8 ODF 0.75 877-7

1-1/8 ODF 0.91 877-9 ADJUSTABLE "REMOTE BULB" MODELS

NotAvailable DRHE-6

5/8 ODF4.88 2.88 1.88 4.62 3.62

0.503.50 4.00

877-57/8 ODF 0.75 877-7

1-1/8 ODF 0.91 877-9

MATERIALS and CONSTRUCTION DETAILS

VALVE TYPE PORT SIZEInchesELEMENT TYPEand MATERIAL

CONNECTIONS BODYMATERIAL

SEATINGMATERIAL

TYPE OFJOINTSType Material

ADRI(E)-1-1/4 5/32

Diaphragm -Stainless Steel

Solder Copper

BrassMetal-to-Metal

Knife EdgeMetal-to-Metal

ADRS(E)-2 1/4 Solder CopperFlare Brass

ADRP(E)-3 3/8 Solder CopperFlare Brass

DRHE-6 3/4 Solder Copper Synthetic-to-MetalADRHE-6

REFRIGERANT VALVETYPEADJUSTMENT

RANGEpsig

MINIMUM ALLOWABLE EVAPORATOR TEMPERATURE AT THE REDUCED LOAD F40 26 20 0 - 20 - 40

Condensing Temperature - F80 100 120 80 100 120 80 100 120 80 100 120 80 100 120 80 100 120

ADJUSTABLE MODELS

12

ADRI-1-1/4 ADRIE-1-1/4 0/55 0.23 0.30 0.37 0.24 0.31 0.39 0.24 0.31 0.39 0.26 0.33 0.42 0.23 0.29 0.37

ADRS-2 ADRSE-2

0/30 1.55 1.99 2.51 1.53 1.97 2.48 1.48 1.90 2.40 1.43 1.84 2.32 0/80 1.42 1.83 2.31 1.44 1.85 2.34

ADRP-3 ADRPE-3

0/30 2.98 3.83 4.83 2.98 3.83 4.83 2.99 3.86 4.87 2.84 3.66 4.62 0/80 2.56 3.30 4.15 2.61 3.36 4.23

ADRHE-6 0/30 5.62 7.24 9.12 5.63 7.25 9.14 5.66 7.29 9.20 5.26 6.78 8.55 0/80 4.08 5.25 6.61 4.23 5.45 6.87

22

ADRI-1-1/4 ADRIE-1-1/4 0/55 0.35 0.45 0.56 0.41 0.53 0.66 0.58 0.75 0.93 0.54 0.69 0.87 0.49 0.64 0.80

ADRS-2 ADRSE-2

0/30 2.93 3.77 4.73 2.82 3.63 4.57 2.72 3.51 4.420/80 2.65 3.40 4.26 2.69 3.45 4.34 2.71 3.48 4.37 2.88 3.70 4.66

ADRP-3 ADRPE-3

0/30 5.56 7.16 9.00 5.61 7.23 9.10 5.47 7.06 8.900/80 4.50 5.78 7.25 4.72 6.06 7.61 4.80 6.17 7.75 5.24 6.73 8.47

ADRHE-6 0/30 10.5 13.5 17.0 10.6 13.7 17.2 10.3 13.3 16.70/80 6.89 8.84 11.1 7.46 9.58 12.0 7.68 9.87 12.4 8.12 11.4 14.4

134a

ADRI-1-1/4 ADRIE-1-1/4 0/55 0.30 0.39 0.50 0.31 0.40 0.52 0.31 0.40 0.52 0.32 0.42 0.54

ADRS-2ADRSE-2

0/30 1.89 2.49 3.19 1.87 2.46 3.16 1.79 2.36 3.03 0/80 1.77 2.33 2.99 1.78 2.35 3.01

ADRP-3 ADRPE-3

0/30 3.62 4.76 6.11 3.62 4.77 6.12 3.64 4.79 6.16 0/80 3.17 4.18 5.36 3.23 4.25 5.45

ADRHE-6 0/30 6.84 9.00 11.5 6.84 9.02 11.6 6.88 9.06 11.6 0/80 5.14 6.76 8.67 5.30 6.98 8.96

502

ADRI-1-1/4 ADRIE-1-1/4 0/55 0.30 0.37 0.46 0.47 0.59 0.72 0.48 0.60 0.74 0.52 0.65 0.80

ADRS-2ADRSE-2

0/30 2.72 3.40 4.18 2.61 3.27 4.01 2.51 3.15 3.870/80 2.43 3.05 3.73 2.43 3.05 3.73 2.45 3.07 3.76 2.54 3.18 3.90

ADRP-3 ADRPE-3

0/30 5.06 6.34 7.78 5.10 6.39 7.84 5.13 6.45 7.920/80 4.19 5.25 6.44 4.19 5.25 6.44 4.27 5.36 6.57 4.58 5.73 7.04

ADRHE-6 0/30 9.57 12.0 14.7 9.64 12.1 14.8 9.69 12.2 14.90/80 6.50 8.15 10.0 6.50 8.15 10.0 6.72 8.43 10.3 7.06 9.46 11.6 ADJUSTABLE "REMOTE BULB" MODELS *

12

DRHE-6

25/35 5.51 7.11 8.96 4.86 6.26 7.89These models are recommended for air conditioning

temperature ranges only.22 55/70 14.3 19.0 24.0 12.7 16.4 20.6

134a 25/35 7.03 9.26 11.9 6.06 7.98 10.2502 65/80 13.9 18.2 22.6 12.6 15.8 19.4

CAPACITY MULTIPLIERS - DESUPERHEATING THERMOSTATIC EXPANSION VALVES12 & 134a 0.21 0.26 0.31 0.24 0.29 0.33 0.25 0.30 0.35 0.29 0.34 0.39 0.33 0.37 0.42

22 0.19 0.24 0.28 0.22 0.26 0.31 0.23 0.27 0.32 0.27 0.31 0.36 0.31 0.36 0.41 0.35 0.40 0.45502 0.24 0.29 0.35 0.26 0.32 0.38 0.28 0.33 0.39 0.32 0.37 0.44 0.36 0.42 0.49 0.41 0.47 0.53


DISCHARGE BYPASS VALVE CAPACITIES - TonsCapacities based on 6F evaporator temperature change from closed to rated opening, discharge temperature 30F above isentropic compression, 25F superheatat the compressor, 0 subcooling, and inclused both the hot gas bypassed and liquid refrigerant for desuperheating, regardless of whether the liquid is fed throughthe system thermostatic expansion valve or an auxiliary desuperheating thermostatic expansion valve.

SELECTION PROCEDURESThe selection of a discharge bypass valve and the neces-sary companion devices is simplified if complete systeminformation is available. This will result in the most eco-nomical selection because the components will match thesystem requirements.

Besides the discharge bypass valve, a specific applicationmay require a hot gas solenoid valve, an auxiliary side con-nection distributor or ASC adapter, and a desuperheatingTEV with a companion liquid line solenoid valve. Once thetype of application (review Application Section) is deter-

mined, the necessary valves can be selected from the infor-mation discussed in this section.

DISCHARGE BYPASS VALVES - The selection of a SporlanDischarge Bypass Valve involves five basic items:

1.Refrigerant - valve capacities vary considerably fordifferent refrigerants.

2.Minimum allowable evaporating temperature at thereduced load condition - depending on the system,this value must be set to prevent coil icing and/orcompressor short cycling. For example, this may be32-34F for a water chiller; 26-28F for a normal airconditioning system; and, the freezing temperature ofthe specific product for a refrigeration system.

*The DRP(E) adjustable remote bulb is obsolete. It may be replaced with the ADRP(E) adjustable model.


temperature change of less than 6F. Multipliers for thosesituations are also given in the table below.

Example - Select a discharge bypass valve for a 30 ton Re-frigerant 22 air conditioning system with 67% cylinderunloading (4 of 6 cylinders unloaded). Normal operatingconditions are 45F evaporating temperature and 120Fcondensing temperature with a minimum condensing tem-perature of 80F due to head pressure control.

When the evaporator load drops below the last step of cyl-inder unloading, it is necessary to keep the system on-the-line to maintain proper space temperatures and avoid frost-ing of the coil. From the compressor manufacturers capac-ity table, the compressor capacity in tons at the minimumallowable evaporating temperature is approximately 10tons. If the system had to be on-the-line down to zero load,the bypass valve would have to bypass 10 tons of hot gas.With the necessary system factors R-22, 26F evaporat-ing temperature at the reduced load condition, and 80Fcondensing temperature the capacity table is checkedfor a valve which can handle the 10 tons bypass capacity:

The DRHE-6-55/70 AR has a capacity of 12.7 tons atthese conditions. Therefore, if the system must operateto zero load, this would be the proper selection.

However, if the minimum evaporator load is 4.5 tons (15%of total system capacity), an ADRPE-3-0/80 would be theproper selection (valve capacity of 4.72 tons). The only ad-ditional information necessary is the valve connections.While various connections are available, the proper valveconnections must be selected to match the systems pipingrequirements.

HOT GAS SOLENOID VALVES - The selection of a SporlanHot Gas Solenoid Valve involves some of the same basicitems already determined for the selection of the dischargebypass valve plus one additional factor:

1. Refrigerant.

2. Minimum allowable evaporating temperature atthe reduced load condition.

3. Hot gas bypass requirement in tons - this is notthe bypass valve capacity.

4. Allowable pressure drop across valve port - sinceexcessive pressure drop across the solenoid valvereduces the capacity of the DBV, the maximum pres-sure drop for a Refrigerant 12 or 134a system shouldbe approximately 5 psi and for Refrigerant 22 or 502system approximately 10 psi.

Capacity Ratings - Once the data listed above is determined,the appropriate solenoid valve can be easily selected from

3. Compressor capacity (tons) at minimum allowableevaporating temperature - consult compressor ca-pacity ratings for this value.

4. Minimum evaporator load (tons) at which the sys-tem is to be operated - most systems are not requiredto operate down to zero load but this value will depend onthe type of system. For example, most air conditioningsystems only need to operate down to 15-25% of full load.However, air conditioning systems for data processing andwhite rooms, and most refrigeration systems may berequired to bypass to zero load conditions.

5. Condensing temperature when minimum load ex-ists - since the capacity ratings of the bypass valvesare a function of condensing temperature, it is vitalthat proper head pressure is maintained, especiallyduring low load operation. As the capacity table indi-cates, a condensing temperature of 80F is consid-ered the minimum allowable for satisfactory systemoperation. See Bulletin 90-30 for information onSporlans Head Pressure Control Valves.

The discharge bypass valve must be selected to handle thedifference between items 3 and 4 above. If the minimumevaporator load (item 4) is zero, the hot gas bypass require-ment is simply the compressor capacity at the minimumallowable evaporating temperature (item 3). The followingdiscussion on Capacity Ratings and the Example show howthese factors affect a selection on a typical air conditioningsystem.

Capacity Ratings - As the Discharge Bypass Valve CapacityTable indicates, valve ratings are dependent on the evapo-rating and condensing temperature at the reduced loadcondition and the refrigerant used. Therefore, once this in-formation and the hot gas bypass requirement in tons isdetermined, a discharge bypass valve can be selected.

Where two valve capacities are shown for the same condi-tions one for the 0/30 adjustment range and another forthe 0/80 adjustment range the 0/30 psig valve shouldbe used because of its greater capacity. Both values arelisted as an aid in selecting a valve for a system with oper-ating conditions between those shown.

As the capacity table heading indicates, these are valve ca-pacities, not the system capacity on which the valve is ap-plied. The capacities are based on an evaporator tempera-ture change of 6F from a closed position to the rated open-ing. This is a nominal rating value based on years of applica-tion experience. Since a discharge bypass valve is actually apressure regulating valve, it should be pointed out that thecapacity ratings based on a 6F evaporator temperaturechange take into account that a 6F change @ 40F on Re-frigerant 22 is a 9.1 psi change while on Refrigerant 12 it isonly 5.7 psi. The 6F nominal change is used so all the vari-ous pressure changes do not need to be shown in the table. Ifadditional capacity is required and a greater evaporator tem-perature change can be tolerated, these valves are capableof opening further. The following table lists various capacitymultipliers for this purpose. For example, an ADRHE-6-0/80 rated for 9.58 tons at a 26F evaporating temperaturewill start to open at 32F (26 + 6); and, when the evaporat-ing temperature has dropped to 26F, the valve will be openfar enough to bypass 9.58 tons of hot gas. If a temperaturechange of 8F can be tolerated, the valve would start open-ing at 34F (26 + 8) and be open far enough to bypass 9.58times 1.15 or 11.02 tons of hot gas.

Occasionally, a bypass valve is selected for an evaporator

CAPACITY MULTIPLIERSfor Evaporator Temperature Changes Other Than 6F Nominal Change

EvaporatorTemperatureChange F

RefrigerantEvaporator Temperature F

40 26 20 0and below

2 12 and 134a 0.65 0.65 0.65 0.6522 and 502 0.72 0.70 0.70

4 12 and 134a 0.80 0.80 0.80 0.7422 and 502 0.87 0.85 0.85

8 12 and 134a 1.11 1.11 1.11 1.0922 and 502 1.17 1.15

10 12 and 134a 1.22 1.20 1.19 1.1122 and 502 1.34 1.27 1.25

V A LV E T Y P E

C O N N E C T I O N SInches

R E F R I G E R A N T S

" A " & " B "Ser ies

"E" Ser iesE x t e n d e d

C o n n e c t i o n s

1 2 2 2 1 3 4 a 5 0 2P R E S S U R E D R O P A C R O S S V A LV E P O R T - p s i

5 1 0 5 1 0 5 1 0 5 1 0A 3 F 1 1 / 4 S A E 0.26 0 .35 0 .37 0 .51 0 .31 0 .42 0 .30 0 .42A 3 S 1 1 / 4 o r 3 / 8 O D F

E 5 S 1 2 0 1 / 4 O D F 0.61 0 .84 0 .88 1 .22 0 .74 1 .00 0 .72 1 .00 E 5 S 1 3 0 3 / 8 O D F

M B 6 F 1 3 / 8 S A E1.01 1 .43 1 .51 2 .10 1 .27 1 .74 1 .30 1 .70M B 6 S 1 M E 6 S 1 3 0 3 / 8 O D F

M B 6 S 1 M E 6 S 1 4 0 1 / 2 O D FM B 9 F 2 3 / 8 S A E

1.50 0 .21 2 .17 3 .04 1 .80 2 .50 1 .80 2 .50 M E 9 S 2 3 0 3 / 8 O D FM B 9 S 2 M E 9 S 2 4 0 1 / 2 O D F

M B 1 0 F 2 1 / 2 S A E2.30 3 .20 3 .37 4 .69 2 .80 3 .90 2 .80 3 .80 M E 1 0 S 2 4 0 1 / 2 O D F

M B 1 0 S 2 M E 1 0 S 2 5 0 5 / 8 O D FM B 1 4 S 2 M E 1 4 S 2 5 0 5 / 8 O D F 3.20 4 .40 4 .58 6 .40 3 .80 5 .30 3 .80 5 .30M B 1 9 S 2 M E 1 9 S 2 5 0 5 / 8 O D F 4.70 6 .50 6 .77 9 .46 5 .70 7 .90 5 .70 8 .00M B 2 5 S 2 M E 1 9 S 2 7 0 7 / 8 O D FM B 2 5 S 2 M E 2 5 S 2 7 0 7 / 8 O D F 7.50 10 .5 10 .8 15 .1 9 .10 12 .7 8 .90 12 .5M B 2 5 S 2 M E 2 5 S 2 9 0 1 - 1 / 8 O D F


the capacity table. Since the capacities for a given solenoidvalve vary considerably with a slight change in pressuredrop, the best selection is the one which keeps the pres-sure drop as low as possible while matching the solenoidvalve and bypass valve connections.

Example - Based on the data for the earlier DBV selection:Refrigerant 22, 26F minimum allowable evaporating tem-perature at the reduced load condition, and either 10 tonsor 4.5 tons as the hot gas bypass requirement, the bestsolenoid valve selection for each case would be:

For 10 tons: MB25S2, 7/8" or 1-1/8" ODF connections, andthe necessary voltage and cycles.

For 4.5 tons: MB14S2, 5/8" ODF connections, and the nec-essary voltage and cycles.

The MB25S2 and MB14S2 would have a pressure drop ofless than 5 psi. Both selections depend on whether adequatecondensing pressure is maintained year round with someform of head pressure control. See Bulletin 90-30 forSporlans Head Pressure Control Systems.

DESUPERHEATING THERMOSTATIC EXPANSION VALVES- The proper selection procedure for a Sporlan DesuperheatingTEV involves some of the same items already determinedfor the selection of the discharge bypass valve plus one ad-ditional item:

1. Refrigerant.

2. Minimum allowable evaporating temperature atthe reduced load condition.

3. Hot gas bypass requirement in tons - this is notthe bypass valve capacity.

4. Capacity multiplier from bottom of DBV capac-ity table - Since a small amount of liquid refrigerantcontrolled by the TEV can desuperheat the bypassedhot gas, this multiplier determines the amount nec-essary for the specific operating conditions.

The required capacity of the desuperheating TEV is item 3multiplied by item 4. Once this capacity is determined, thevalve can be selected from the capacity table shown below.The proper thermostatic charge is selected from the tablebelow. Each charge is applicable over the range of evapo-rating temperatures shown in the table for Refrigerant 12,22, 134a, and 502.

Capacity Ratings - As the TEV capacity table shows, valveratings are based on the evaporating temperature at thereduced load condition and the pressure drop that existsacross the valve. The actual pressure drop available is afunction of the condensing pressure and the equivalentevaporating pressure plus any pressure losses in the liq-uid line. Or, the difference between the inlet pressure ofthe TEV and the pressure equivalent to the evaporatingtemperature at the reduced load condition.

The condensed capacity table on Page 12 covers the airconditioning temperature range only with models havingboth SAE and ODF connections (G and C valves have SAEconnections and EG and S valves have ODF connections).The models shown are applicable to the majority of hot gasbypass requirements. For applications beyond the tempera-ture range and capacity sizes, refer to Bulletin 10-10.

HOT GAS SOLENOID VALVE CAPACITIES-TonsCapacities based on 100F condensing temperature, isentropic compression plus 50F, 40F evaporator and 65F suction gas.

For other evaporator conditions use the multipliers in the table below.

For complete specifications on these solenoid valves, refer to Bulletin 30-10.

CORRECTION FACTORSfor evaporator temperatures at the reduced load condition

EVAPORATORTEMPERATURE F 40 26 20 0 - 20 - 40

MULTIPLIER 1.00 .95 .93 .87 .81 .75


Example - Based on the data for the DBV selection ex-ample: Refrigerant 22, 26F minimum allowable evapo-rating temperature at the reduced load condition (50 psig),80F condensing temperature (144 psig), and either 10 tonsor 4.5 tons as the hot gas bypass requirement, the follow-ing selection procedures are used:

For 10 tons: Required TEV capacity is 10 tons times .22(capacity multiplier from bottom of DBV Capacities Table)or 2.2 tons. The pressure drop across valve would be ap-proximately 144 minus 50 or 94 psi.

Assuming the system required an externally equalized, sol-der type valve, the best selection is the SVE-2. On systemsbypassing to zero load, it is better to use the valve that hasa capacity nearest to the desuperheating requirementrather than the larger model. From the ThermostaticCharge Selection Table, an L1 charge is selected for Refrig-erant 22 at 26F evaporating temperature and 25F suc-tion gas superheat. Therefore, the complete valve specifi-cation is SVE-2-L1, 1/2" x 5/8" ODF - 5'.

For 4.5 tons: Required capacity is 4.5 tons times .22 or .99tons. The pressure drop would be approximately the sameas for 10 ton requirement, 94 psi. Therefore, the completevalve specification is EGVE-1-L1, 3/8" x 1/2" ODF - 5'.

Liquid Line Solenoid Valve - On some systems it may benecessary to add a small solenoid valve ahead of thedesuperheating TEV for pump down control. This occurswhen the main liquid line solenoid valve is located nearthe system TEV and it is impractical to connect the liquidline for the desuperheating TEV downstream of the mainsolenoid valve. In these cases the small solenoid valve canbe selected from the table below by matching the connec-tions with the inlet connection of the desuperheating TEV.Complete details on solenoid valves are given in Bulletin30-10.

DISTRIBUTOR WITH AUXILIARY SIDE CONNECTION ORAUXILIARY SIDE CONNECTOR (ASC) - Many times thedistributor with an auxiliary side connection (Series 1650R)is selected and installed by the original equipment manufac-turer. When it is applied in the field, its selection depends onthe systems main thermostatic expansion valve and the evapo-rator coil. This is discussed in the Application Section.

The ASC is normally selected and applied in the field. Thebasic requirement is that it match the TEV and the dis-tributor on the system. If the part number of the refriger-ant distributor is available, the ASC can be selected fromthe table below by matching the appropriate numbers.

Complete technical details on auxiliary side connection distributor andthe ASC are given in Bulletin 20-10 and supplemental bulletins.

* For suction gas temperatures that require superheats other than thoselisted above, contact Sporlan Valve Company, or the compressor manu-facturer for assistance.

Bulb Size for desuperheating thermostatic expansion valve types G, EG,C and S is 1/2" x 3-1/2" for thermostatic charges L1, L2 and L3.

*THERMOSTATIC CHARGESfor desuperheating thermostatic expansion valves

RefrigerantSuction GasSuperheat*

F

Minimum AllowableEvaporating Temperature atReduced Load Condition F

40 thru - 15 - 16 thru -40

R-12 & R-134a25

L2L1

35L2

45 L3

R-2225

L1 L13545 L2 L2

R-50235

L1 L145

DISTRIBUTORTYPE

NUMBERASC TYPENUMBER

ASC CONNECTION SIZESInches

Inlet-ODM

Outlet-ODF

Auxiliary-ODF

1620, 1622 ASC-5-4 5/8 5/8 1/21112, 1113 ASC-7-4 7/8 7/8 1/21115, 1116 ASC-9-5 1-1/8 1-1/8 5/81117, 1126 ASC-11-7 1-3/8 1-3/8 7/8

1125, 1127, 1143 ASC-13-9 1-5/8 1-5/8 1-1/8

LIQUID LINE SOLENOID VALVE CAPACITY SELECTION TABLE

TYPE NUMBER

CONNECTIONInches

PORTSIZE

Inches

TONS of REFRIGERATION

"A" and "B"Series

"E" SeriesExtended

ConnectionsPressure Drop - psi

With Manual Lift Stem 1 2 3Normally Closed 12 22 134a 502 12 22 134a 502 12 22 134a 502

A3P1 3/8 NPT Female

.101 0.7 0.9 0.8 0.6 1.0 1.3 1.2 0.8 1.2 1.6 1.5 1.0A3F1 1/4 SAE FlareA3S1 E3S120 1/4 ODF SolderA3S1 E3S130 3/8 ODF Solder E5S120 1/4 ODF Solder

.150 1.2 1.6 1.5 1.1 1.8 2.3 2.1 1.5 2.2 2.8 2.6 1.9 E5S130 3/8 ODF Solder MB6P1 3/8 NPT Female

3/16 2.2 2.9 2.7 1.9 3.1 4.0 3.8 2.6 3.8 4.9 4.6 3.2 MB6F1 3/8 SAE Flare MB6S1 ME6S130 3/8 ODF Solder MB6S1 ME6S140 1/2 ODF Solder MB9P2 3/8 NPT Female

9/32 3.6 4.7 4.4 3.0 5.1 6.6 6.2 4.3 6.2 8.0 7.5 5.2 MB9F2 3/8 SAE Flare ME9S230 3/8 ODF solder MB9S2 ME9S240 1/2 ODF Solder

/ Bulletin 90-40

DISCHARGE BYPASS VALVE ORDERING INSTRUCTIONS

For information on other Sporlan Pressure Regulating Valves ask for the following bulletins:90-10 - Crankcase Pressure Regulating Valves 90-20 and 90-20-1 - Evaporator Pressure Regulating Valves 90-30 - Head Pressure Control Valves

FullyAdjustable

0/30 or 0/80 psigor 0/55 psig (ADRI)

ConnectionsSolder or Flare

AdjustableRemote Bulb

AdjustmentRange

0/30, 0/80,55/70, etc.

Port Sizein Eighthsof an Inch

ExternalEqualizer

Omit ifInternallyEqualized

ValveType

DischargeRegulating

Body StyleI, S, P or H

When ordering any Discharge Bypass Valve, completely specify the valve by including all the applicable information:

A DR H E 6 0/80 AR 7/8" ODF

DESUPERHEATING THERMOSTATIC EXPANSION VALVE CAPACITIES - Tons

VALVE TYPE STANDARDCONNECTIONS

Inches

M INIMUM ALLOWABLEEVAPORATOR TEMPERATURE

at the Reduced Load Condit ion - FInternally Equalized Externally Equalized 40 26 20

SAE ODF SAE ODF G & C EG & S Pressure Drop Across Valve - psiREFRIGERANT 12 60 80 100 60 80 100 60 80 100

GF-1/8 EGF-1/8 GFE-1/8 EGFE-1/8 1/4 x 1/2 SAE

3/8 x 1/2 ODF

0.13 0.14 0.16 0.11 0.13 0.15 0.11 0.12 0.14 GF-1/4 EGF-1/4 GFE-1/4 EGFE-1/4 0.26 0.30 0.34 0.25 0.29 0.33 0.25 0.29 0.32 GF-1/2 EGF-1/2 GFE-1/2 EGFE-1/2

3/8 x 1/2 SAE

0.50 0.58 0.65 0.45 0.52 0.58 0.43 0.50 0.56 GF-1 EGF-1 GFE-1 EGFE-1 1.00 1.15 1.29 0.90 1.04 1.17 0.86 1.00 1.11 GF-1-1/2 EGF-1-1/2 GFE-1-1/2 EGFE-1-1/2 1.60 1.85 2.07 1.44 1.67 1.86 1.38 1.59 1.78 CF-2 SF-2 GFE-2 SFE-2 1/2 x 5/8 ODF 2.00 2.31 2.58 1.81 2.09 2.33 1.72 1.99 2.23 CF-2-1/2 SF-2-1/2 CFE-2-1/2 SFE-2-1/2 1/2 x 7/8 ODF 2.50 2.89 3.23 2.26 2.61 2.91 2.16 2.49 2.78 CF-3 SF-3 CFE-3 SFE-3 3.00 3.46 3.87 2.71 3.13 3.50 2.59 2.99 3.34 CF-5 SF-5 CFE-5 SFE-5 1/2 x 5/8 SAE 5/8 x 7/8 ODF 5.00 5.77 6.45 4.00 4.62 5.17 3.59 4.15 4.64

REFRIGERANT 22 75 100 125 75 100 125 75 100 125 GV-1/5 EGV-1/5 GVE-1/5 EGVE-1/5 1/4 x 1/2 SAE

3/8 x 1/2 ODF

0.17 0.20 0.22 0.17 0.19 0.22 0.17 0.19 0.22 GV-1/3 EGV-1/3 GVE-1/3 EGVE-1/3 0.30 0.35 0.39 0.30 0.34 0.38 0.30 0.34 0.38 GV-1/2 EGV-1/2 GVE-1/2 EGVE-1/2

3/8 x 1/2 SAE

0.39 0.45 0.50 0.43 0.49 0.55 0.38 0.44 0.49 GV-3/4 EGV-3/4 GVE-3/4 EGVE-3/4 0.65 0.75 0.84 0.64 0.74 0.83 0.63 0.73 0.82 GV-1 EGV-1 GVE-1 EGVE-1 0.87 1.00 1.12 0.85 0.98 1.10 0.84 0.97 1.09 GV-1-1/2 EGV-1-1/2 GVE-1-1/2 EGVE-1-1/2 1.39 1.60 1.79 1.36 1.57 1.76 1.35 1.56 1.74 CV-2 SV-2 GVE-2 SVE-2 1/2 x 5/8 ODF 1.73 2.00 2.24 1.70 1.97 2.20 1.69 1.95 2.18 CV-3 SV-3 GVE-3 SVE-3 2.77 3.20 3.58 2.72 3.14 3.52 2.70 3.12 3.49 CV-4 SV-4 CVE-4 SVE-4 1/2 x 7/8 ODF 3.90 4.50 5.03 3.83 4.42 4.94 3.80 4.39 4.90 CV-5 SV-5 CVE-5 SVE-5 4.50 5.20 5.81 4.42 5.11 5.71 4.39 5.07 5.67

CVE-8 SVE-8 1/2 x 5/8 SAE 5/8 x 7/8 ODF 6.93 8.00 8.94 6.81 7.86 8.79 6.75 7.80 8.72REFRIGERANT 134a 60 80 100 60 80 100 60 80 100

GJ-1/8 EGJ-1/8 GJE-1/8 EGJE-1/8 1/4 x 1/2 SAE

3/8 x 1/2 ODF

0.15 0.17 0.19 0.14 0.16 0.18 0.13 0.15 0.17 GJ-1/4 EGJ-1/4 GJE-1/4 EGJE-1/4 0.30 0.35 0.39 0.30 0.35 0.39 0.26 0.30 0.34 GJ-1/2 EGJ-1/2 GJE-1/2 EGJE-1/2

3/8 x 1/2 SAE

0.60 0.69 0.77 0.54 0.63 0.70 0.52 0.60 0.67 GJ-1 EGJ-1 GJE-1 EGJE-1 1.20 1.38 1.55 1.09 1.25 1.40 1.04 1.20 1.34 GJ-1-1/2 EGJ-1-1/2 GJE-1-1/2 EGJE-1-1/2 1.90 2.19 2.45 1.74 2.01 2.24 1.65 1.90 2.13 CJ-2 GJE-2 EGJE-2 2.40 2.77 3.09 2.17 2.51 2.80 2.06 2.38 2.66 CJ-2-1/2 SJ-2-1/2 CJE-2-1/2 SJE-2-1/2 1/2 x 7/8 ODF 3.01 3.48 3.89 2.71 3.13 3.50 2.59 2.99 3.34 CJ-3 SJ-3 CJE-3 SJE-3 3.62 4.18 4.67 3.26 3.76 4.21 3.11 3.59 4.01 CJ-5 SJ-5 CJE-5 SJE-5 1/2 x 5/8 SAE 5/8 x 7/8 ODF 6.03 6.96 7.78 4.82 5.56 6.22 4.32 4.98 5.57

REFRIGERANT 502 75 100 125 75 100 125 75 100 125 GR-1/8 EGR-1/8 GRE-1/8 EGRE-1/8 1/4 x 1/2 SAE

3/8 x 1/2 ODF

0.12 0.14 0.16 0.12 0.14 .016 0.12 0.14 0.15 GR-1/4 EGR-1/4 GRE-1/4 EGRE-1/4 0.25 0.29 0.32 0.24 0.28 0.31 0.24 0.27 0.31 GR-1/2 EGR-1/2 GRE-1/2 EGRE-1/2

3/8 x 1/2 SAE

0.47 0.55 0.61 0.46 0.53 0.59 0.45 0.52 0.58 GR-1 EGR-1 GRE-1 EGRE-1 0.87 1.00 1.12 0.85 0.98 1.10 0.84 0.97 1.09 GR-1-1/2 EGR-1-1/2 GRE-1-1/2 EGRE-1-1/2 1.30 1.50 1.68 1.25 1.44 1.61 1.23 1.42 1.58 CR-2 SR-2 GRE-2 SRE-2 1/2 x 5/8 ODF 1.73 2.00 2.24 1.67 1.92 2.15 1.64 1.89 2.11 CR-3 SR-3 CRE-3 SRE-3 1/2 x 7/8 ODF 2.42 2.80 3.13 2.33 2.69 3.01 2.29 2.65 2.96 CR-4 SR-4 CRE-4 SRE-4 3.46 4.00 4.47 3.33 3.85 4.30 3.27 3.78 4.23

CRE-6 SRE-6 1/2 x 5/8 SAE5/8 x 7/8 ODF

4.76 5.50 6.15 4.16 4.80 5.37 3.91 4.51 5.05 SRE-7 6.06 7.00 7.83 5.30 6.11 6.84 4.98 5.75 6.42

1:

2:

sporlan adlse-2

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