CASH TYPE PBE-4 PRESSURE BUILDER/ECONOMIZER REGULATOR
INSTALLATION INSTRUCTIONS
Before installation, these instructions must be carefully read and understood.
DESCRIPTION
The Type PBE-4 regulator is a fully automatic
pressure builder/economizer valve designed
for cryogenic liquid systems. It is equipped
with a fully adjustable economizer so the
economizer set point can be custom tuned for
your system. The version that is equipped with
tube connections incorporates a check valve to
prevent backflow into the economizer.
SPECIFICATION DATA
Service: Cryogenic Liquids
SIZES: 1/2 NPT or 0.839" diameter SST Tube
Connections: Threaded or SST Tube
Body Material: ASTM B62 Bronze Casting
Temperature Rating:
-320°F (-196°C) to +150°F (66°C)
Maximum Initial Pressure:
650 psi (4.48 MPa)
Available Pressure Sets:
110 psig
150 psig
Capacity: For specific capacity information,
consult the factory.
GENERAL INSTALLATION INSTRUCTIONS
The Type PBE-4 regulator should be installed
using Teflon tape or other thread sealant
compatible with the working fluid. For easy
operation and maintenance, it is suggested
that the 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.
CONSTRUCTION
See component description for materials of
construction.
OPERATING INSTRUCTIONS
Adjusting the Set Pressures
The Economizer 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 pressure, turn
the adjusting screw clockwise (into the spring
chamber). To decrease the pressure, turn the
adjusting screw counter-clockwise (out of the
spring chamber). Tighten the adjusting screw
lock nut after the adjustment has been made.
This same operation applies to the Pressure
Builder adjustment as well.
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.
Emerson.com/FinalControl © 2018 Emerson. All rights reserved. VCIOM-10808-EN 19/06
EC OUTLET
PB INLET
PB OUTLET
Economizer
Assembly
Pressure
Builder
Assembly
FIGURE 1
2
CASH TYPE PBE-4 PRESSURE BUILDER/ECONOMIZER REGULATOR
INSTALLATION INSTRUCTIONS
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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
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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.
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Item Quantity Description Material
1 1 Screw SST
2 1 Nut SST
3 1 Spring Chamber Brass
4 1 Spring Button Brass
5 1 Economizer Spring SST
6 1 Diaphragm Sub - - - -
6a 1 Pusher Post Button SST
6b 1 Gasket Teflon
6c 3 Diaphragm Phosphor Bronze
6d 1 Pressure Plate Brass
6e 1 Washer SST
6f 1 Nut Brass
7 1 Gasket Gylon
8 1 Body Brass
9 1 Ball SST
10 1 Gasket Gylon
11 4 Screw SST
12 1 Spring SST
13 1 Piston Sub - - - -
13a 1 Piston Brass
13b 1 Seat Disc Teflon
14 3 Fitting Brass
15 3 Nut Brass
16 1 Tube SST
17 1 Spring SST
18 1 Ball SST
19 2 Tube SST
20 2 Screen SST
21 1 Body Bronze
22 1 Gasket Teflon
23 1 Diaphragm Sub - - - -
23a 1 Nut SST
23b 1 Washer SST
23c 1 Pressure Plate Brass
23d 4 Diaphragm Bronze
23e 1 Gasket Teflon
23f 1 P-Post Button SST
24 1 Diaphragm Stop Brass
25 1 Pressure Spring SST
26 1 Spring Button Brass
27 1 Spring Chamber Bronze
28 1 Nameplate Aluminum
29 2 Drive Screw SST
30 1 Lock Nut SST
31 1 Adjusting Screw SST
Item Quantity Description Material
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