Emerson CASH VALVE B Series Manual

CASH VALVE™ TYPE B ¼" TO 2" FOR CRYOGENIC SERVICE
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
Before installation, these instructions must be carefully read and understood.
DESCRIPTION
The Type B regulator is a fully automatic
pressure regulating valve designed for
cryogenic service in the pressure build-up
circuit. Because the Type B 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 build-up service)
Sizes: ¼", ⅜",
1
/
2",
3
/
4", 1", 1¼", 1½" and 2"
Connections: Threaded internal inlet and outlet
Body Material: Bronze
Temperature Rating: +150°F (339°K) to
-320°F (78°K)
Maximum Initial Pressure:
400 psi (27.6 bar)
CONSTRUCTION
Bronze body, internal trim, and diaphragms;
Teflon seat, diaphragm gasket, and bottom
plug gasket; stainless steel pressure spring.
All parts are commercially cleaned for
oxygen service.
GENERAL INSTALLATION INSTRUCTIONS
Install a Y-Type or equivalent strainer upstream
of the Type B. The built-in strainer screen is
secondary protection only.
The Type B regulator should be installed in the
horizontal position with the spring chamber up
or down. For other installation requirements
consult the factory. For ease of operation and
maintenance, it is suggested that manual
shutoff valves be installed upstream and
downstream from the valve. Before installing
the valve, the piping and the 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 good pipe joint compound on
the male pipe threads and do not over tighten
the valve connections.
Emerson.com © 2018 Emerson. All rights reserved. VCIOM-10796-EN 22/01
WARNING
Failure to follow these instructions or to properly
install and maintain this equipment could result in
an explosion, fire and/or chemical contamination
causing property damage and personal injury
or death.
Cash Valve regulators must be installed, operated
and maintained in accordance with federal,
state and local codes, rules and regulations
and Emerson Process Management Regulator
Technologies, Inc. instructions.
If the regulator vents gas or a leak develops in
the system, service to the unit may be required.
Failure to correct trouble could result in a
hazardous condition.
Installation, operation and maintenance
procedures performed by unqualified personnel
may result in improper adjustment and unsafe
operation. Either condition may result in
equipment damage or personal injury. Only
a qualified person shall install or service the
B Series regulator
CALIFORNIA PROPOSITION 65 WARNING
This product can expose you to chemicals
including lead, which is known to the State of
California to cause cancer, birth defects or other
reproductive harm. For more information, go to
www.P65Warnings.ca.gov.
INTRODUCTION
Scope of the Manual
This manual provides instructions for the
installation, adjustment, and maintenance for
the B Series pressure regulators.

2
CASH VALVE™ TYPE B ¼" TO 2" FOR CRYOGENIC SERVICE
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
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 for parts identification.
Repair parts can easily be installed without
removing the regulator from the line.
Servicing Diaphragm(s) and Pressure Spring
1. Loosen the lock nut and turn the adjusting
screw counterclockwise until the pressure
spring is no longer under tension. When
reassembling, run the adjusting screw down
until the lock nut almost touches the spring
chamber. This will give you approximately
the same set as before disassembly.
2. Remove the assembly screws securing
the spring chamber to the body. During
reassembly, tighten the screws evenly
in a star pattern. See Chart below for
torque values.
3. Remove the spring chamber. Then remove
the spring button, pressure spring, and
pressure plate.
4. Remove the diaphragm(s) and diaphragm
gasket (a diaphragm gasket is only
present when construction calls for
metal diaphragms).
5. Remove the pusher post button. During
reassembly, ensure the pusher post button
is centered properly on the pusher post.
6. Inspect all parts for wear and damage and
replace if necessary. Reassemble parts
in reverse order. DO NOT OVERTIGHTEN.
Follow the Operation Instructions to reset
the delivery pressure.
Servicing the Cylinder, Piston,
Strainer Screen, and Plug Gasket
1. Loosen the lock nut and turn the adjusting
screw counterclockwise until the pressure
spring is no longer under tension. When
reassembling, run the adjusting screw down
until the lock nut almost touches the spring
chamber. This will give you approximately
the same set as before disassembly.
2. Remove the bottom plug. Take care, as
the bottom plug is under slight tension as
a result of the piston spring acting against
the bottom plug. Remove the piston, piston
spring, and strainer screen.
3. Thoroughly clean the strainer screen and
remove any debris from the valve body.
4. Remove the hexagon cylinder.
5. Inspect all parts for wear and damage. If
either the cylinder or piston need replacing,
it is necessary to replace both as both parts
wear equally.
6. Reassemble the valve in reverse order. DO
NOT OVERTIGHTEN. Follow the Operation
Instructions to reset the delivery pressure.
Valve Size, In. (mm) Assembly Screw Torque Value, In-lbs (N•m)
1
/
4(6.35) 100 (11.3)
3
/
8(9.53) 150 (16.9)
1
/
2(12.7) 200 (22.6)
3
/
4(19.1) 200 (22.6)
1 (25.4) 250 (28.2)
1
1
/
4(31.8) 350 (39.5)
1
1
/
2(38.1) 350 (39.5)
2 (50.8) 350 (39.5)
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 (5) 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.

3
CASH VALVE™ TYPE B ¼" TO 2" FOR CRYOGENIC SERVICE
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
No. Component Description Construction
1Adjusting Screw SST
2Lock Nut Brass
3Name Plate Aluminum
4Spring Button Brass
5Spring Chamber Bronze
6Pressure Spring SST
7Pressure Plate Brass
8Diaphragm Bronze
9Gasket Fibre
10 Screw SST
11 Nut SST
12 Pusher Post Button Brass
13 Seat Disc Teflon
14 Piston and Post Brass
15 Cylinder Brass
16 Screen Monel
17 Body Bronze
18 Gasket Teflon
19 Piston Spring 302 SST
20 Bottom Plug Bronze
FIGURE 1
VCIOM-10796-EN © 2018, 2022 Emerson Electric Co. All rights reserved 01/22. Cash Valve is a mark owned by one of the companies in the Emerson Automation
Solutions business unit of Emerson Electric Co. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the property of their
prospective 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 Electric Co. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of
any Emerson Electric Co. product remains solely with the purchaser.
Emerson.com