AMCV SERIES

Air Main Charging Valve

ES

Velocity Control Improves Air TreatmentCompressed air dryers and filters are designed and rated to treat specified volumes of air at spe-cific conditions. A refrigerated dryer, for example, is rated to achieve a specified dew point at a particular volume (scfm), pres-sure (100 psig), compressed air temperature (100°F), and ambi-ent temperature (100°F).

If system pressure is not constant, the air velocity through clean air treatment equipment will fluctuate. For those operat-ing 24 hours a day, fluctua-tion may be minor. If, however, compressors are shut down for any length of time (overnight, weekends, holidays), system pressure will drop significantly as air escapes through leaks. Until full, or near full, operating pres-sure is reached, dryers and filters

may not work to specification and contaminants may be swept downstream.

Kaeser’s Air Main Charging Valve (AMCV) reduces expo-sure to excessive velocity by automatically opening and clos-ing to maintain a set minimum pressure in the supply side of the air system while charging the main distribution piping. This prevents damage and increases the effectiveness of air treatment equipment. It also pressurizes the entire air system in the shortest possible time.

Kaeser offers Air Main Charging Valves to suit all compressed air installations.

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Without an Air Main Charging Valve (AMCV), contaminants such as water, oil, and particles can be swept into the system and the clean air treatment components will be “overrun” by very high air velocities during the initial pump-up of the system. Dryers and filters might be permanently damaged.

without AMCV

with AMCV

Time

Butterfly Valve TypeThe electro-pneumatic insertion-type butterfly valve is available for use in ANSI flanges between 2” and 8”. Adjustable to pressures up to 200 psig.

Ball Valve TypeThe Kaeser Air Main Charging Valve with an electro-pneumatic full-bore ball valve is available in 1”, 1½” and 2” NPT(F) sizes. Adjustable to pres-sures up to 200 psig.

Velocity Profile

Two Types of Valves

1

2

3

AMCV protects air treatment components from extended exposure to high velocity air

while an air system is being pressurized. After the air system has been pressurized,

the AMCV also prevents exposure of air treatment components to possible overflow

conditions. Leaks, artificial demand, and unregulated uses all affect the total demand

for air. When this total demand reduces the system pressure, the increased air

velocity may greatly reduce the effectiveness of air treatment components. The AMCV

prevents this condition, ensuring that dryers and filters will be able to operate accord-

ing to their rated specifications.

Pressure SwitchThe pressure switch can be adjusted to the desired set point (usually about 10 psi below the compressor load or discharge). Below this set point, the Air Main Charging Valve will be in the closed valve position.

1

Solenoid ControllerA 5-way solenoid control valve combined with adjustable nozzles precisely control valve operation to eliminate swings in pressure and velocity in the supply side of the air system. The reliable air supply setting gives priority to protecting the supply side of the air system. In the case of power outage, the AMCV will close. A manual over-ride allows for the valve to remain in the open position if required.

2

ValveDepending on size, the AMCV employs a full-bore ball valve or a rugged, cast iron butterfly valve with oil-resistant gasketing. Both are designed for full flow with mini-mal pressure drop.

3

AMCV Protects Air Quality

Installing the Air Main Charging Valve is quick and requires no special tools. Since the AMCV requires both electrical supply

and pilot air from the air line, we recommend installing an isolation valve upstream of the AMCV.

The ACMV ships in the Reliable Air

Quality or “fail close” or “normally

closed” configuration. The Reliable Air

Quality AMCV minimizes the exposure

of high velocity air at start up and

maintains air supply side pressure

(prior to the valve) if the set pressure

is met. To further protect air treat-

ment equipment, the AMCV will close

in case of power failure, if demand

exceeds supply, or if pressure falls

below the set point. For systems which

are shut down frequently, such as

nightly, this option further minimizes

the exposure time of high velocity air

as any storage receiver downstream

of the AMCV is pressurized with the

demand side piping.

For Reliable Air Supply, also referred

to as “fail open” or “normally open”,

the AMCV functions in the same man-

ner as above, however, in case of

power failure, the valve remains open,

ensuring air supply as long as demand

does not exceed supply or the pres-

sure does not fall below the set point.

For systems which are shut down

infrequently, and have no leaks in the

supply side piping, this field adjustable

setting allows for any storage receiver

after the AMCV to supplement air dur-

ing start up conditions, further minimiz-

ing system exposure to high velocity

air.

Simple Installation

Figure 1

Figure 2

Technical Specifications

Connection(in.)

Max. Working Temperature

(°F)

Max. Working Pressure

(psig)

DimensionsW x D x H

(approx. in.)

Weight(lbs.)

Electro-pneumatic with Ball Valve

1 NPT150 200

9.7 x 5 x 19 151-1/2 10 x 5 x 19 212 NPT 10 x 5.2 x 20 23

Electro-pneumatic with Butterfly Valve

2 Flange

150 200

10 x 6 x 22 203 Flange 10 x 7.5 x 25 254 Flange 13 x 9 x 28 436 Flange 13 x 11 x 31 568 Flange 16 x 13.5 x 35 100

Electro-pneumatic with Butterfly Valve High Temperature

2-1/2 Flange

400 232

10 x 7 x 25 333 Flange 10 x 7.5 x 25 374 Flange 13 x 9 x 28 586 Flange 13 x 11 x 31 798 Flange 16 x 13.5 x 35 127

NOTES: All models require 115V/1 ph/60 Hz power supply.Other versions may be available. Please consult factory for more information.

Specifications are subject to change without notice.

Shown right, is a multiple com-

pressor system with two parallel air

treatment lines and controlled with a

Sigma Air Manager (SAM) 3D. SAM

controls all compressors and turns

them on only when needed, improving

pressure stability and system reliabil-

ity. When used in conjunction with the

AMCV’s optional outputs, SAM can

receive an alarm signal if there is a

problem with the system.

For this layout, the AMCV is

included on each air treatment line

and is set to operate in Reliable Air

Quality mode, offering the same ben-

efits shown in Figure 1. If desired, with

optional inputs, the AMCV can also close

in case of a dryer failure.

For more information on Sigma Air Manager (SAM), see our Compressed Air System Controls and Sigma Control 2

brochures.

Figure 3

Kaeser Compresores de México S de RL de CVCalle 2 #123Parque Industrial Juríca 76100 Querétaro, Qro.Telephone: 01 (442) 218 64 48sales.mexico@kaeser.com

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Kaeser Compressors, Inc.511 Sigma DriveFredericksburg, Virginia 22408 USAPhone: 540-898-5500Toll Free: 800-777-7873Email: info.usa@kaeser.com

www.kaeser.com

Kaeser Compresores de Guatemala y Cia. Ltda.Calz. Atanasio Tzul 21-00, zona 12 El Cortijo II, Bodega 50101012–Guatemala CityTelephone: +502 2412-6000info.guatemala@kaeser.com

The Air Systems SpecialistWe earn our customers’ business by supplying superior quality

equipment and services. Our products are designed for reliable

performance, easy maintenance, and energy efficiency. Prompt

and dependable customer service, quality assurance, training, and

engineering support contribute to the value our customers have come

to expect from Kaeser. Our employees are committed to implementing

and maintaining the highest standards of quality to merit customer

satisfaction. We aim for excellence in everything we do.

Our engineers continue to refine manufacturing techniques and

take full advantage of the newest machining innovations. Extensive

commitment to research and development keeps our products on the

leading edge of technology to benefit our customers. Our industry-

leading controls continue to set the standard for efficient system

operation. With over 90 years of experience, Kaeser is the air systems

specialist.

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USAMCV