expansion rubber

8/10/2019 Expansion Rubber

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L-SERIE

L - S E R I E S

RUBBER EXPANSION/FLEXIBL

A joint reliance

G-9906 c

TOZEN SANGYO CO., LTD.

8-4, Asahi, YoshikawaSaitama 342-0008Japan

Phone : 048 993-1035Fax : 048 993-1018

AGENT

The contents of this literature are subject to change without notice.



Features & Advantages ...........................................................................

Movements ..............................................................................................

Guideline for Expansion Joint in Japan ................................................

Application ..............................................................................................

Construction ...........................................................................................Standard of TOZEN Rubber Compound ................................................

Variation .................................................................................................

Angular Movement .................................................................................

Various LS Connectors

Flange Type LS Connector ......................................................................

LS Connector G-Type 300 mm & 400 mm Lateral Movement ......................

LC Connector Flange Type for Resin Pipe .............................................

LV Connector Socket Joint Type for Resin Pipe ....................................

LB Connector Bevel End Type ................................................................

Notes for Connection ..............................................................................

Control Unit ..............................................................................................

Handling Manual ......................................................................................

Anchoring and Guiding The Piping System ...........................................

Testing Equipment ................................................................................

LS Connector Design Sheet ...................................................................

3

4

5 - 6

7 - 10

1112

13

14

15 - 16

17 - 18

19 - 20

21 - 22

23 - 24

25 - 26

27 - 28

29

30 - 31

32

33

C O N T E N T S

“TOZEN” rubber expansion/flexible joint L-series con-

nectors are being used widely in various fields like

absorption of stress when ground subsidence and earth-

quake, absorption of movement in weak reclaimed land,

absorption of thermal elongation and compression of res-

in pipes and vibration absorption of pump.

Furthermore, large movement can be absorbed

with small overall length.

L-SERIESL-SERIESRUBBER EXPANSION/FLEXIBLE JOINT



1. Absorption of MovementProper arch of L-series connector andelasticity of rubber itself absorb largemovement with small overall length.

2. High Pressure ResistanceL-series connector provides max. workingpressure 2.94 MPa (30 kgf/cm2) with ourproper construction and special compoundsynthetic rubber reinforced by strong syn-thetic fibre. This pressure rating variesagainst sizes,please consult us.

3. Vibration and Sound AbsorptionSpring constant is made small with elas-ticity of rubber and proper design of archand waist to result good vibration andsound isolation.

4. Custom MadeL-series connectors are custom madeconnectors.It is possible to make connectors tomeet site requirements like fluid, pres-sure, temperature, overall length, con-nection, movement, etc.

5. Large DisplacementL-series connectors have large move-ment of axial compression, elongation,lateral and angular movement indepen-dently or simultaneously, while metalconnectors provide movement in onedirection.

6. Great Recovery from MovementWhen a metal connector is fully com-pressed, it assumes a permanent set, arubber expansion joint continues toreturn to its original position.

7. Excellent CorrosionResistance

8. Neither Packing nor Gasketrequired

9. VariationVarious connections are provided by mate-rials like polyvinyl chloride pipes (VP,VU),steel pipes, hume pipes, etc. and also byconnection like flange, socket, welding,etc., which meetsite requirement.

3 4

FEATURES & ADVANTAGES MOVEMENTS

Absorption of:Axial Compression

Absorption of:Axial Elongation

Absorption of:Lateral Movement

Absorption of:Angular Movement

Absorption of:Vibration

The above movements can be absorbed independently or simultaneously.

NoThanks

order?



JWWA (Japan Water Works Association), Japan Sewerage System Business Group andJapan Sewerage System Association indicate the followings as a one word of design of waterworks facility, a guide for earthquake proof construction method for water works facility, adesign criteria and a guide for countermeasure to earthquake for sewerage system facility.

7. Water Distribution Facility7.4.14 Expansion JointThe expansion joint shall conform to the fol-lowing clauses.

1. The expansion joint shall be installed ininterval 20 to 30 m at the exposure ofpipe used non-free expansion joint.

2. In case that coated steel pipe for waterworks is installed, an expansion jointshall be installed if required.

3. In case that unplasticized polyvinyl chlo-ride pipe used TS joint is installed, theexpansion joint shall be installed ifrequired.

4. An expansion joint with large flexibilityshall be installed at aqueduct bridge andplace of uneven subsidence in weakground.

Water Conduit Facility (by JWWA)4.2.5 Expansion JointThe expansion joints for water conduit pitshall conform to the following clauses.

1. In the open and closed pit, the expan-sion joint shall be installed in the dis-tance approx. 10 to 20 m as both expan-sion and executing joints.

2. As uneven ground subsidence happenseasily at the place of soil quality change,before and behind of jointing well,bridge, weir, manhole, gate, etc., anexpansion joint with large flexibility shallbe installed.

3. The material of expansion joint shallhave enough strength and water tight-ness, and it shall function well againstelongation and compression.

A Volume of Design CriteriaMachine Design by Japan Sewer-age System Business Group

4.2 Joint for Main Pipe

1. The flange joint shall be standard in jointstyle of the main pipe.

2. In case uneven ground subsidence isanticipated between the pump stationand discharge tank or distribution tank,etc., an expansion joint shall be installedto make safety against elongation/com-pression and flexibility.

7.4.15 Foundation of PipeIn case that the pipe is laid to weak ground,the place of a stratum sudden change anda sharp slope, etc., the piping shall bedone as follows.

2 In case that rigid and weak ground are indislocation and one end of the pipe ofstructure, etc. is anchored, a flexibleexpansin joint shall be used to meet une-ven ground subsidence.

Water, Chilled Water, Cooling and Heating Water,

Condensing Water, Hot Water, Sea Water

Potable Water (with special compound rubber)Hot Spring Water (available depends on the conditions)Alkali (available depends on the conditions)Acid (available depends on the conditions)Oil (available depends on the conditions)

5 6

GUIDELINE FOR EXPANSION JOINT IN JAPAN

APPLICABLE FLUIDS


http://slidepdf.com/reader/full/expansion-rubber 5/187 8

APPLICATION

1. Beside a structure 2. Beside valve & manhole 5. Under road and railway

7. In pump house

6. In reclamation area and rural area

3. O n or under an aqueduct bridge 4. B etween two structures

L-series connectors provide absorption of pipe movements in piping system with short overall length.L-series connectors are being used in :

Water Supply ServiceChemical Processing Plant

Sewerage Treatment Plant

Water Treatment PlantPower Stations

Drainage Systems

HVAC SystemsMarine Service



When ground subsidence isanticipatedIt is installed in weak land, crossing areaof the road and river, etc. to absorb lateralmovement and angular movement.

When thermal expansion andcontraction is anticipatedIt is installed in the pipe line, where ther-mal elongation and compression are antic-ipated, to absorb axial and angular move-ment

When vibration and noise generateIt is installed besides a pump and turbineto absorb vibration and noise transmittedto the pipe.

When several factors for vibra-tion and noise are anticipatedEven though the above mentioned factorsare generated in complex, L-series con-nectors are applicable.

When our other products are notapplicableIn case our other standard products likeTWINFLEX, TOZENFLEX, TUFFLEX HS,etc. do not satisfy site requirements,L-series connectors are applicable.

9 10

APPLICATION

Application Examples Relates to Civil Engineering

1. Beside a structure 2. Beside a manhole

Beside a manhore

Drain pipe unit

LS Connector LS Connector

Pipe penetration through structure

Socket and spigot of hume pipe

3. Aqueduct bridge 4. Between two structures



1. Inner RubberThe inner rubber core protects the rein-forcing fabric from penetration of thefluid and aging. This smooth, leakproofcore is made of neoprene, EPDM, chloro-butyl, hypalon, nitrile or other compoundas desired for various service. Pleaseconsult us.

2. Reinforcing FabricThe reinforcing fabric is the flexible andsupporting part between the inner coreand outercover.High strength synthetic fibre is useddepending on pressure and temperaturerequirements. All fabric piles are pen-etrated with synthetic rubber to givemax. adhesion under the conditions of

pressure, vacuum and stress.

3. Outer RubberThis is the exterior surface of the expan-sion joint, generally made of neoprene,giving good resistance to weather,ozone, aging, cracking, heat and corro-sion.

4. End Reinforcing RingThis end reinforcing ring provides max.strength and tightness between flanges.

5. FlangesOur standard flange is made of mildsteel and coated with epoxy.It may be altered upon request.

6. Arch Reinforcing RingThis arch reinforcing ring is incorporatedfor the buried or vacuum services.General structure design of this ring isbased on a load of 3 m undergroundplus 25 tons of vehicle load.

11 12

CONSTRUCTION STANDARD OF TOZEN RUBBER COMPOUND

C R

63

+5

100

400

25

- 20

- 60

+25 ~ - 0

60

+5

100

400

20

- 25

- 30

+10 ~ -0

EPDMRubber Materials

Test Items

SpringHardness

Tolerances ofSpring Hardness

Tensile Strength

Tear Test

Aging Test(100C 96 hours)

Hs (JIS A)

Tensile Strength kgf/cm 2

(more than)

Elongation %(more than)

Tear Strength kgf/cm 2

(more than)

Change Ratio InTensile Strength % (more than)

Change Ratio InTensile Elongation % (more than)

Change in SpringHardness Hs

- -

Free sulphur anyalyzing and melting test for EPDM of rubber materials are according to JIS K6353.

; ;

4 5 1 3 2 6



FlangeIt is possible to specify materials, stan-dard and finish or painting.

RubberThe rubber body material is changeableto meet site requirements.Please consult us.

Overall LengthPlease refer to a table of standard over-all length for each product herein.It is changeable if specified.

Underground ApplicationThe reinforcing ring is used against out-er pressure of the buried service.It is designed in the base of a load of 3munderground plus 25 tons vehicle load.When a load of outer pressure morethan that is anticipated, please specify it.For application of suction like vacuum,etc., please use this underground typeconnector.The standard finish of flanges for under-ground type will be hot dip galvanized+Tar epoxy coating.

Filled ArchWhen inner rubber is required to be flatfor prevention of sludge sedimentation,dead air space, fluid turbulent flow, etc.,please specify this filled arch type.

Angular movement of our L-series connectors are shown in the following table.

13 14

VARIATION ANGULAR MOVEMENT

20

50

100

200

300

400

1

2

3

4

5~6

6~7

20~600

700~1500

20~600

700~1500

20~600

700~1500

20~600

700~1500

200~600

200~600

7

5

15

10

20

15

30

20

30

30

LateralMovement mm

NominalDiameter A

AngularMovementNo.of Bellows

;;;



15 16

FeaturesAbsorption of MovementAll parts other than flanges are flexible.Large movement can be absorbed withsmall overall length.

Classification of EccentricityLS connector is classified in 6 types of lat-eral movement, which are 20 mm, 50 mm,100 mm, 200 mm, 300 mm and 400 mm.

ApplicationsAbsorption of pipe movements in weakground

Insulation between structure and pipeCrossing river, road and railwayBefore and behind of aqueduct bridgeRun out from manholeAbsorption of pipe thermal elongation andcompression

Vibration absorption of pump, etc.

L : Overall Length Elon. : Elongation Comp.: Compression Mass indicates the weight for underground type.Please use each movement within allowable movements.Information in the above table is for single movement only.Incase of complex movements, correction is required.Pleaserefer to the expression in page 26.

* For higher pressure application, please consult us.

Less than 0.20 2Less than 0.49 5Less than 0.98 10

Less than 0.49 5

70

80 EPDM

Low PressureMiddle PressureHigh Pressure

For20 mm, 50 mm100 mm, 200 mm

for300 mm, 400 mm

Classification ofLateral Movement

Max. Working PressureMPa kgf/cm2

Max. WorkingTemp.

Classification ofPressure

Aboveground and underground types are available.The above figures show the underground type.The size 20A and 25A are filled arch type.The filled arch type is also producible more than 32A.

Construction

32A~900A

20 25A 1000A~1500A

Dimensions and Allowable Movements

Classification of Max. Working Pressure and Temperature

; ;;

;;; ; ; ;;

No.1234567

FlangeReinforcing RingInner Rubber

Outer RubberReinforcing CordReinforcing RingFiller

20253240506580

100125150200250300350400450500

600700800900

10001100120013501500

L150150150150150150150150150200200200200200200200250

250250300300300300300300350

Elon.1515151515152020202020202025252525

252525252525252525

Comp.2020202020202020202020202030303030

303030303030303030

Mass kg

2.32.63.03.64.45.26.07.2101318263342506171

99116133150170190217260405

L250250250250250250300300300300300300300350350350350

400400400400450450450450450

Elon.3030303030303030303030303040404040

404040404040404040

Comp.4545454545454545454545454550505050

505050505050505050

Mass kg

2.62.93.44.04.95.96.78.4121621313950607487

121137156178197225254300460

NominalDia. mm

20 mm LateralMovement1 – Bellow mm


L350350350350350350350350350500500500550550550550550

550650650650700700700700750

Elon.4040404040404040404040404050505050

505050505050505050

Comp.6060606060606060606060606070707070

707070707070707070

Mass kg

3.23.64.45.26.28.09.1111520263746597495

110

145170190220250280310370590


L450450450450450450450450450600600600650650650650650

650750750750800800800800950

Elon.4040404040404040404040404050505050

505050505050505050

Comp.6060606060606060606060606070707070

707070707070707070

Mass kg

3.84.35.36.37.49.5111317222843556885

105125

168197225254287324357420680


Mild Steel SS400Mild Steel SS400Synthetic Rubber

Synthetic RubberSynthetic FiberMild Steel SS400Special High Polymer Rubber

Parts Materials

2

7

1 3 4 5 6

Flange TypeLS Connector

6 types of LS connectors are available, which20 mm, 50 mm, 100 mm, 200 mm, 300 mmand 400 mm of eccentricity.

LS-C



For higher pressure application, please consult us.

L.M. = Lateral Movement Elon. = ElongationComp. = Compression

Dimensions and Allowable Movements

Classification

300 mm Lateral Movement

L.M. : Lateral MovementElon. : ElongationComp.: CompressionA.M. : Angular MovementPlease apply each movement within a allowable movements.Information in the above table is single movement only.In case of complex movements, correction is required.Please refer to the expression in page 26.

400 mm Lateral Movement

17 18

Features

Absorption of MovementsAll parts except flanges are flexible.Large movements can be absorbed withsmall overall length.

ApplicationsAbsorption of pipe movement in weakground.Insulation between structure and pipe.Crossing river, road and railway.Before and behind of aqueduct bridge.Run out from manhole.Absorption of pipe thermal elongation andcompression.

Less than 0.49 5 7080 EPDM

Combined use of above-ground and undergroundNegative Pressure:MPa kgf/cm 2

For300 mm and400 mm

LateralMovement mm

NominalDiameter A

Max. WorkingTemp.

Aboveground/UndergroundApplications

Construction

20253240506580

100125150200250300350400450500600

555555555555555556

No.123456

Flange

Reinforcing Ring

Inner Rubber

Outer Rubber

Reinforcing Cord

Reinforcing Ring

Mild Steel SS400

Mild Steel SS400

Synthetic Rubber

Synthetic Rubber

Synthetic Fiber

Mild Steel SS400

Parts Materials

NominalDia.mm

No. ofBellows

550550550550550650650650650650700700800900900900900

1000

300300300300300300300300300300300300300300300300300300

606060606060606060608080808080808080

505050505050505050606060606070707070

303030303030303030303030303030303030

OverallLengthmm

151515151515151515151515151515151515

4.25.37.38.1101516212834456583

105127159177260

AllowableTorsion

Limit

Masskg

L.M.mm Elon.mm Comp.mm A.M.

Allowable Movement

20253040506580

100125150200250300350400450500800

777776666677777777

NominalDia.mm

No. ofBellows

750750750750750750750750750750850850950

11001100110011001250

400400400400400400400400400400400400400400400400400400

808080808080808080

100100100100100100100100100

505050505050505050606060606070707070

303030303030303030303030303030303030

OverallLengthmm

151515151515151515151515151515151515

5.36.5

910121718232838517494

121145183203289

AllowableTorsionLimit

Masskg

L.M.mm Elon.mm Comp.mm A.M.

Allowable Movement

LS Connector G-Type300mm and 400mm Lateral Movement

LS-G The products is for combined use for aboveground and

underground applications.Please note of flat inner rubber.For 150 A to 600 A, the shape of r einforcing ring of partNo.2 will be different.

;; ;

2 1 3 4 5 6



32A~900A

20~25A 1000A~1500A

For higher pressure applications, please consult us.

Dimensions and Allowable Movements FeaturesSoftAs LC connector is more flexible thanPVC pipes, it can absorb stress causedby uneven ground subsidence, etc. andcan protect the pipes.

ApplicationsAbsorption of pipe movement in weakground.Insulation between structure and pipe.Crossing river, road and railway.Before and behind of aqueduct bridge.Run out from manhole.Absorption of pipe thermal elongation andcompression.Vibration absorption of pump, etc.

19 20

Low Pressure

Middle Pressure

High Pressure

Low Pressure

Middle Pressure

High Pressure

7080 EPDM

Less than 0.20 2

Less than 0.49 5

Less than 0.98 10

Less than 0.20 2

Less than 0.49 5

Less than 0.98 10

Aboveground applicationnot applicable to

Negative Pressure

Underground applicationNegative Pressure:-0.1 MPa -760 mmHg

ClassificationOf Pressure

Max. WorkingPressureMPa kgf/cm 2

Max.WorkingTemp.

Aboveground/UndergroundApplications

Construction

Flexible connector for steel pipe

Resin Pipe

Resin Pipe

Rigid

Flexible

Resin Pipe

Resin Pipe

Leakage

LC Connector

Construction

;;;

;;; ;; ;;

100 mm and200 mm

LateralMovement

L. = Overall Length, Elon. = Elongation, Comp. = Compression Mass indicates for underground type.Please use each movement within allowable movements.Information in the above table is for single movement only. In case of complex movements, correction is required. Pleaserefer to the expression in page 26.

No.1234567

FlangeReinforcing RingInner RubberOuter Rubber

Reinforcing CordReinforcing RingFiller

Mild Steel SS400Mild Steel SS400)Synthetic RubberSynthetic Rubber

Synthetic FiberMild Steel SS400Special High Polymer

Parts Materials

20253240506580

100125150200250300350400450500

600700800900

10001100120013501500

L350350350350350350350350350500500500550550550550550

550650650650700700700700750

Elon.4040404040404040404040404050505050

505050505050505050

Comp.6060606060606060606060606070707070

707070707070707070

Mass kg3.23.64.45.26.28.09.1111520263746597495

110

145170190220250280310370590

L450450450450450450450450450600600600650650650650650

650750750750800800800800950

Elon.4040404040404040404040404050505050

505050505050505050

Comp.6060606060606060606060606070707070

707070707070707070

Mass kg3.84.35.36.37.49.5111317222843556885

105125

168197225254287324357420680

NominalDia. mm



2

76

1 3 4 6

LC ConnectorFlange Type for Resin Pipe

Soft connector for resinpipe of PVC (VP, VU).

LC-F Both aboveground and underground types are available.

The above figure shows underground type.20A and 25A are filled arch type.The filled arch type is also producible for more than 32A.

5



L = Overall Length, Elon. = Elongation, Comp. = Compression Mass indicates for underground type.Information in the above table is for single movement only. Incase of complex movements, correction is required. Pleaserefer to page 26.

Dimensions and Allowable MovementsInstallation

For higher pressure application, please consult us.

Less than 0.49 570

80 EPDM

Combined use ofaboveground and underground.

Negative Pressure:-0.1 MPa -760 mmHg

100 mm and 200 mm

LateralMovement mm

Max working PressureMPa kgf/cm 2

Max. WorkingTemp.

Aboveground / UndergroundApplications

21 22

Construction

Construction

;; ;

The material is combined use for aboveground and underground.The product is filled arch t ype of inner rubber.

123

45

SocketReinforcing RingInner RubberOuter RubberReinforcing Cord

PVCMild Steel SS400Synthetic RubberSynthetic RubberSynthetic Fiber

PartsNo. Materials

506580

100125150200250300

L500500500500600600600700700

Elon.404040404040404040

Comp.505050505050505050

Mass kg578

101215202433

L650650650650700750750850850

Elon.606060606060606060

Comp.707070707070707070

Mass kg789

121418242838

NominalDia. mm

646464747590

145164180

H mm



FeaturesSimple InstallationSimple installation with only socket joint-ing. Please refer to the below figures forinstallation.Filled ArchNo fear of sludge sediment due to straightinner rubber.

ApplicationsAbsorption of pipe movements in weak ground.Insulation between structure and pipe.Crossing river, road and railway.Before and behind aqueduct bridge.Run out from manholeAbsorption of pipe thermal elongation andcompression.

gage mark

H

Measure H dimension fromthe edge of socket and makea marked line.

Apply adhesive to a collet ofsocket inside and to outside ofinserting part(up to a marked line).

Insert the inserting part up to amarked line. Adhesion will becompleted after drying.

5 1 3 4 5 2

LV ConnectorSocket Joint Type for Resin Pipe

Simple installation with onlysocket joint of LV connector for resin pipesof PVC VP, VU , etc.

LV-C



32 40A

50A~1500A

Classification

Dimensions and Allowable Movement

Please use each movement within allowable movements.Information including lateral movement in the above table is forsingle movement only. In case of complex movements, correc-tion is required. Please refer to the expression in page 26.

23 24

Construction

For higher pressure applications, please consult us.

Low Pressure

Middle Pressure

High Pressure

Less than 0.20 2

Less than 0.49 5

Less than 0.98 10

Combined use of abovegroundand underground.

Negative Pressure:-0.1 Mpa -760 mmHg

70

80 EPDM100 mm and 200 mm

LateralMovement

Classificationof Pressure

Max. WorkingPressure Mpakgf/cm2

Max.WorkingTemp.

AbovegroundUnderground Applications

;;

;;

1234567

Side PipeStopper RingInner RubberOuter RubberReinforcing CordFillerReinforcing Ring

Mild Steel SS400

Mild Steel SS400Synthetic Rubber

Synthetic RubberSynthetic Fiber

Special High PolymerMild Steel SS400

PartsNo. Materials

3240506580

100125150200250300350400450500600700

80900

10001100120013501500

L

700700700700700700700800800800800

100010001000105010501050

1050110011001000100010001050

Elon.

4040404040404040404040505050505050

50505050505075

Comp.

6060606060606060606060707070707070

70707070707080

Mass kg

4569

121416263949647396

130143180214

244310340380510620840

L

800800800800800800800900900

10001000115011501150120012001200

1200125012501150115011501200

Elon.

4040404040404040404040505050505050

50505050505075

Comp.

6060606060606060606060707070707070

70707070707085

Mass kg

678

111416182944567292

104148174220280

360420480660680740

1000

NominalDia. mm

150150150150150150150150150150150150160160160160160

160160160170170170170

H mm



ApplicationsAbsorption of pipe movements in weak ground.Insulation between structure and pipe.

Crossing pipe for river, road and railway.Absorption of pipe thermal elongation and com-pression.

6

125 5 7 3 4

For Hume Pipe

Upstream for FRPM Pipe (Socket)

For Cast Iron Pipe

Downstream for FRPM (Spigot)

Example of Various Connection

For dimensions and working pressure of the above products by the end connections, please consult us.

SocketSpigot

Socket Spigot

;

Counter pipe

LB ConnectorBevel End Type

LB-C The product is combined use of aboveground and

underground.32A and 40A are filed arch type of inner rubber.The filled arch type for more than 50A is also producible.



1.In rubber expansion joints, the packing face of the products might be damaged depends on the counter-pipe flange type. Please check the shape of the counter-pipe flange as follows.

2. Fix the installation bolts from the rubber bodyside and tighten the nuts at the counter-pipe side.In case of the fully threaded bolts, note the boltsedge not to protrude extraordinarily the rubberbody side.

3. Tighten the installation bolts in even in the diag-onal order referring to the following table of thespace after tightening the bolts and nuts.The abnormal installation like uneven bolts tight-ening, etc. will cause damage of the products.

Bevel Welding ConnectionWhen connecting LB connector, payattention to protect the products fromheat transmission.

Allowable movements show max. singlemovement only. In case of complex move-ments, please follow the below expressionfor correction.

C. EL. C. =A. EL. C. x {1-(L.M/A.L.M + A.M./A.A.M.)}C. EL. C. = Correct Elongation and CompressionA. EL. C. = Allowable Elongation and Compres-sionL.M. = Lateral MovementA.L.M = Allowable Lateral MovementA.M. = Angular MovementA.A.M = Allowable Angular Movement

(Example) For LS connector 300A of 200lateral movement, correct elongation will beas follows when lateral movement 150 mmis required.

Correct Elongation = 40 x {1-(150/200 + 0)}= 10 mm

For LS series connectors, pleasecalculate as A.M./A.A.M. = 0

In case LS connector for 200 mm lateral movementis deflected 200 mm, allowable elongation will be‘0’. In case LS connector is deflected 200 mm andfurther allowable elongation is required, pleaseapply LS connector for 300 mm lateral movement.

Socket Joint ConnectionPlease refer to the working procedures of LV connector as follows.

25 26

NOTES FOR CONNECTION

CORRECTION FOR COMPLEX MOVEMENTS

Shape

Result

Slip-On Welding Type Flange Male-Female FlangeButt Welding type Flange

Nominal dia.mm

Space After Tightening mmLS Connector, LS Connector G-Type, LC Connector

20 – 125150 – 500

600 – 800

900

8.513

18

20

JIS B1180: Metric CoarseScrew Thread

1. Check if the pipefor insertion iscut vertically.

2. Clean the socketinside and insert-ing pipe outsidenot to leave oilnor water.

3. Measure dimen-sion of H fromthe edge ofinserting pipeand indicate asgage mark.

4. Apply adhesiveto collet of sock-et inside and tooutside of insert-ing pipe (up to amarked line) ineven.

5. Insert a pipe tothe position of amarked line andhold it for awhile.

6. Do not load tothe connectionforcibly after con-nection. Adhe-sion will be com-pleted after dry-ing.

4.As to the installation bolts, refer to the fol-lowing table.

JIS 10KNominalDia. Bolt L Bolt L

JWWA Flanges F125

M12M12M16M16M16M16M16M16

M16M20M20M20M22M22M22M24M24M24M30M30M30M30

5560656565657070

70808585909090

100100100120120130130

M16

M16M16M16M16M20M20M22M22M24M24M24M30M30M30

70

7070808085859090

100100110120120130

1520253240506580

100125150200250300350400450500600700800900

No problem.It is an ideal one because the innerdia. of rubber body and inner dia. ofthe mating pipe flange are almostsame and a holding power for thepacking is enough.

Apply a gasket to use.Burrs by welding indicated by arrowmark 1 may damage the packingsealing face. Remove burrs by file orsand paper and apply a gasket ifrequired.

Not applicable.Load per unit area will get bigger andthe packing sealing face will bedamaged due to small contact areawith protrusion indicated by arrow mark2 and packing sealing face of the body.

Space after tightening the bolts and nuts

pipe side

flexible joint

nut

Spring washer

S = space aftertightening

flat washernut

21



In case of the following conditions, control unit is recommended to use for protection of connectors.In case that it is hard to support reaction force thrust by pressure during the test opera-tion or normal operationIn case that lateral movement more than the design is anticipated.In case that the connectors are anticipated to be compressed when installation.

W-Type WeldingThe triangle plates are welded directly tothe flanges.

BP-Type Back PlateTriangle back plate type using bolt holesof counter flanges.

U-Type Welding New TypeEasy installation and removing typeeven in a small space.

HINGE-Type TWIN ACTION-TypeFor a case that the excessive movementthan the design is predicted.

Please refer to the following table of installation bolts for BP type control unit.

Notes of Transportation1.Use a cloth lifting device nylon sling

always in lifting and hanging during trans-portation.

2.The body is made of rubber. Do nottransfer the products with a hook, steelpipe and fork of fork lift truck.

3.Do not give a big shock to the products.Do not roll over the products on thegravel, uneven surface, etc.

Notes of Re-burying

1.When re-buying, do not use soil includingdebris, macadam, wood chips, etc.

2.Bury the products in the ground pressingtightly soil and sand for re-buying every30 cm depth.Do not bury the products at one effort upto the re-buying ground.

3.If soil pressing is not enough, the productsmay be loaded with excessive displace-ment than allowance in early stage. Wheninsufficient soil pressing is anticipated,

calculate the design movements includ-ing subsidence after installation.

4.Pay attention not to damage the productswhen soil pressing.

27 28

CONTROL UNIT

The material of counter flange will be SS400.

JIS B1180: MetricCoarse Screw Thread

Applicable FlangeNominal Dia.mm JIS 10K JIS 20K JIS 10K JIS 20K

Applicable Flange

M16 x 90LM16 x 90LM16 x 90LM16 x 90LM16 x 90LM16 x 90LM20 x 100LM20 x 110LM20 x 110LM22 x 110L

M16 x 90LM16 x 90LM16 x 90LM16 x 100LM20 x 100LM20 x 110LM22 x 110LM22 x 130LM22 x 130LM24 x 140L

M22 x 120LM22 x 130LM24 x 140LM24 x 140LM24 x 140LM30 x 160LM30 x 160LM30 x 170LM30 x 170L

M24 x 150LM30 x 150LM30 x 170LM30 x 180LM30 x 180LM36 x 200L

3240506580

100125150200250

Nominal Dia.mm

300350400450500600700800900

Applicable Products:LS Connector, LS Connector G-Type.

LC Connector, LENERFLEX C-Type 10K32A~300A

Table of Installation Bolts for BP Type Control Unit

Illustration shows 4-point support.





29 30

HANDLING MANUAL ANCHORING AND GUIDING THE PIPING SYSTEM

Notes of Use1.Damage of Body

Please check existence of damage on thebody before use. If any damage are foundout especially on the packing area, inner

rubber, etc. do not use the products.2.Operating Conditions

Please use the products checking max.working pressure and temperature to bewithin the working conditions.

3.Valve Position CheckingThe products might be damaged byimproper operation like complete shut-offoperation, etc.Please check the valve position of ‘Open-Close’ securely when operation.

4.Valve OperationPlease operate the valve not to flow liq-

uid suddenly.5.Flow Velocity through Pipe

Please use the products in less than3 m/sec. of flow velocity through the pipe.

6.AdhesionPlease pay attention not to adhere oils anfats, organic solvent thinner, toluene,etc , acid, alkali, etc. to the products. Ifadhered, wipe off at once.

Notes of Storage1.Pay attention to protect the products from

damage during transportation and stor-

age.If damaged, do not use the products.

2.In case of storage for a long time, avoidthe direct rays of the sun and store theproducts in the cool and dark place.

3.Do not leave the products in the place inmore than 40 ° C and excessive moisturefor a long time.

4.Protect the products from fire and heat.

5.Do not load to the products.

Notes of Installation1.In case of the products in displacement,

pay attention to the products not to touchthe structure and/or equipment especial-ly sharp edge .

2.Measure and make alignment accuratelynot for unnecessary outer force com-pression, tension, torsion, etc. to addwhen the products are connected to thepipe.

3.When welding or cutting the pipe nearbyafter installation, protect the productswith cover like our SPARK-GUARD fromsparks.In case heat transmission is anticipated,take some measure like taking off the pro-ducts from the pipe, etc.

4.When installation to the outdoor pipe,

make lagging to the products to preventthe rubber body ageing.

5.In case the products are used to thepump for the purpose of vibration isola-tion, refer to the followings for installation.

Pipe connectors can only be effective if correctly installed. Special attention must be paidto anchor points due to the force imposed by internal pressure.The proper location of rubber expansion joints is close to a main anchoring point.Following the joint in the line, a pipe guide or guides should be installed to keep the pipe inline and prevent undue displacement of the line. It is a simple application of a joint toabsorb the elongation and compression of a pipeline between fixed anchor points.

Intermediate AnchorIntermediate Fixing Point

Intermediate section of each rubberexpansion joint, when 2 or more rubberexpansion joints are used between themain anchors.Anchor base installation leg section ofduplex type expansion joint

Calculation of Thrust

When rubber expansion joints are installedin the pipeline, the static portion of thethrust is calculated as a product of thearea of the I.D. of the arch of the rubberexpansion joint times the max. pressure

design or test that will occur with the line.The result is a force expressed in kgf.

Anchor InstallationWhen a rubber expansion joint is used,anchors fixing points with sufficientstrength are required.The installation locations and types ofanchors are as follows.

Main Anchor Main Fixing Point

You will notice that in all cases solidanchoring is provided at the followinglocations.

End section of straight piping installedwith a closed plateBending section where flow directionchangesBetween 2 expansion joints whose pip-ing diameters differ due to the use of areducerSection with a valve installed at the pip-ing section between 2 expansion jointsInlet section of branch piping with unre-

stricted expansion joint

gate valve

check valve

flexible joint

reducer

deliveryFlexible joint

pump

T = Thrust kgfP = kgf/cm 2

D = Arch I.D. (mm)

T = D 2 P4



Installation of GuidesIn order for a rubber expansion joint correctly elongation and compression, guides arerequired for the alignment of the expansion joint with the pipe and also for the naturaltransmission of a force required for the movement in the axial direction to those guides.Install each guide at the following intervals.

Obtain the max. installation interval of

each guide from the following equation.In addition, the intermediate guide inter-val L3 can be obtained from the follow-ing figure of relationship with guide inter-val (L) and max. working pressure.

L1 4D L2 14DD = Outer Pipe Diameter (mm)

31 32

ANCHORING AND GUIDING THE PIPING SYSTEM

Example of Guide

GuideRubberExpansionJoint

Expansion

FixingJoint

Fig,Relationship with Guide Interval (L) and Max.Working Pressure

Max.Working Pressure

G u

i d e

I n t e r v a

l

Mainfixing point

Rubberexpansion

joints

L1 = Distance between rubber expansion joint and first No. 1 guideL2 = Distance between No. 1 guide and No. 2 guideL3 = Distance between No. 2 guide and intermediate gui de

N o. 1 g uid e N o. 2 g ui de Pi pi ng wei gh tholder

Intermediateguide

L1 L1 L2 L3 L3

TESTING EQUIPMENT

1 Absorption of:Axial Compression

3 Absorption of: Lateral Movement

2 Absorption of:Axial Elongation

4 Pressure Resistance



Operating conditions and other performance data published in this catalog havebeen developed from our design calculation, in-house testing, field reports providedby our customers and/or published official standards or specifications. They aregood only to cover typical applications as a general guideline to users of TOZENproducts introduced in this catalog.

For any specific application, users are kindly requested to contact TOZEN SAN-GYO CO., LTD. for technical advice or to carry out their own study and evaluationfor providing suitability of these products to such an application. Failure to followthis request could result in property damage and/or personal injury, for which weshall not be liable.

While this catalog has been compiled with the utmost care, we assume no respon-sibility for errors, impropriety or inadequacy. Any information provided in this cata-

log is subject to from-time-to-time change without notice for error rectification or pro-duct discontinuation, design modification, new product introduction or any othercause that TOZEN SANGYO CO., LTD. considers necessary. This edition cancelsall previous issues.

33

LS CONNECTOR DESIGN SHEET

CAUTION!Customer

Project Name

Application

Filled Arch

Control Unit

Medium

Pressure

Temperature

Quantity

Drawing

Required Inspection

Delivery

Remarks

( )A

( )

( )mm

Aboveground Underground

JIS K BS4504 PN ANSI # DIN PN

SS400 SS304 Others

Unichrome H.D.Galv. Tar Epoxy Others

Socket Bevel End Others

Yes No

Yes No

20 mm 50 mm 100 mm 200 mm 300 mm 400 mm Others mm

mm

mm

Normal MPa Kgf/cm2 Bar psi. mmHg mmAq

Max. MPa Kgf/cm2 Bar psi. mmHg mmAq

Normal C F

Max. C F

pcs.

Yes copies No

days after receipt of order

Nominal Diameter

No. of Arch

Overall Length

Others

Lateral

Elongation

Compression

Standard

Material

FinishEnd Connection

Flange

Size

Movement

TOZEN SANGYO CO., LTD.

8-4, Asahi, YoshikawaSaitama 342-0008Japan

Phone : 0489 93-1035Fax : 0489 93-1018

AGENT

expansion rubber

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