Emerson CASH A-401 Bedienungsanleitung

Before installation, these instructions must be fully read and understood.

CASH TYPE A-401 CRYOGENIC PRESSURE REGULATOR

InstallatIon InstructIons

DESCRIPTION

The Type A-401 regulator is a fully automatic

pressure regulating valve designed for

cryogenic service in the pressure build-up

circuit. Because it may be used for either

cryogenic liquids or gases, it may be installed

either before or after the pressure build-up

coil.

SPECIFICATION DATA

Service: Cryogenic liquids and gases

(pressure reducing or pressure build-up

service)

Sizes: 1/2"

Connections: Threaded internal inlet

and outlet.

Body Material: ASTM B62 CA836 Bronze

Temperature Rating:

+150°F (339°K) to -320°F (78°K)

Maximum Initial Pressure: 600 psig (41.4 bar)

Capacity: For specific capacity information,

consult the factory.

GENERAL INSTALLATION INSTRUCTIONS

The Type A-401 regulator should be installed

in the horizontal position with the spring

chamber upright or down. For other installation

requirements, consult the factory. For easy

operation and maintenance, it is suggested that

manual shut-off valves be installed upstream

and downstream from the valve. Before

installing the valve, the piping and valve should

be thoroughly flushed out to remove any foreign

material. Install the valve with the inlet pipe

fitted to the inlet connection identified on the

valve body. Use a compatible sealant on the

male pipe threads and do not over-tighten the

valve connections.

CONSTRUCTION

See component description for materials of

construction.

All parts are commercially cleaned for oxygen

service.

OPERATING INSTRUCTIONS

Adjusting the Delivery Pressure

The regulator’s delivery pressure setting is

adjusted by turning the adjusting screw (1)

at the top of the spring chamber (3) after

loosening the adjusting screw lock nut (2).

To increase the delivery pressure, turn the

adjusting screw clockwise (into the spring

chamber). To decrease the delivery pressure,

turn the adjusting screw counter-clockwise (out

of the spring chamber). Tighten the adjusting

screw lock nut after the adjustment has been

made (and reinstall optional cap).

MAINTENANCE INSTRUCTIONS

CAUTION

Before attempting to replace any spare parts,

be sure to shut off all pressure connections to

the valve. With the valve closed however, system

pressure could still be locked between the shut

off valve and the inlet and/or outlet sides of the

regulator. Before proceeding with any valve

service, be certain to relieve the pressure from

both sides of the regulator.

Refer to section view on the following page for

parts identification. Repair parts can easily be

installed without removing the regulator from the

line.

CASH TYPE A-401 CRYOGENIC PRESSURE REGULATOR

InstallatIon InstructIons

Neither Emerson, Emerson Automation Solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product.

Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.

Cash is a mark owned by one of the companies in the Emerson Automation Solutions business unit of Emerson Electric Co. Emerson Automation Solutions, Emerson and

the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be

construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by

our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without

notice.

Emerson.com/FinalControl

Item Quantity Part No. Description Material

1 1 18524 Adjusting Screw SST

2 1 16684 Lock Nut SST

3 1 21500 Spring Chamber Bronze

4 1 08225 Spring Button Brass

5 1 13399 Name Plate Aluminum

6 2 02533 Drive Screw SST

7 1 - - - - Pressure Spring SST

8 1 08243 Diaphragm Stop Brass

9 1 12003 Gasket Teflon

10 122048 Diaphragm Sub - - - -

10a 107999 Nut SST

10b 110993 Washer SST

10c 122062 Pressure Plate Brass

10d 416586 Diaphragm Bronze

10e 112002 Gasket Teflon

10f 121956 P-Post Button SST

11 122173 Piston Sub - - - -

11a 122174 Piston Brass

11b 121510 Seat Disc Teflon

12 106711 Spring SST

13 121518 Gasket Gylon

14 121970 Bottom Plug Brass

15 421517 Screw SST

16 121507 Body Bronze

BILL OF MATERIALS

PB INLET PB OUTLET

FIGURE 1

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