Emerson CASH VALVE A-32 Installation Instructions

CASH VALVE™ TYPE A-32 CRYOGENIC PRESSURE REGULATOR
INSTALLATION INSTRUCTIONS
Before installation, these instructions must be read carefully and understood.
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
Type A32 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 Type A32 pressure regulator.
Emerson.com
DESCRIPTION
The Type A-32 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 / 3 /
4 8
Connections: Threaded internal
inlet and outlet.
Body Material: Bronze or Stainless steel
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-32 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.
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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.
VCIOM-13794-EN 22/01