1 | GE Oil & Gas
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Introduction
GE’s Becker VRP-B-CH series balanced seat design, double-
acting pilot represents a breakthrough in valve control technology
for the natural gas industry. Built to exacting specifications,
this easily maintained unit offers highly accurate control
characteristics over a wide range of operating environments.
When in control, in a steady state, the VRP-B-CH series pilots have
a very low gas consumption rate to minimize fugitive emissions.
Furthermore, the VRP-B-CH pilots are designed to allow bleed
gas to be routed to a lower pressure system, or downstream,
for complete elimination of bleed gas. The elimination of this
expensive bleed gas ultimately saves a significant amount of
money for the operating company and reduces the environmental
impact of atmospheric hydrocarbons and diminishing natural
resources.
Description
The Becker VRP-B-CH balanced seat, double-acting pilot
provides pressure control when utilized with a double-acting
piston actuated control valve. The VRP-B-CH measures
downstream sensing pressure and positions the double-acting
actuator to maintain the desired downstream pressure. The
VRP-B-CH pilot may be used for pressure control applications with
setpoints ranging from 3 psig to 1500 psig. The Becker CH pilot
design represents GE’s commitment to continually develop new
products and update existing ones to increase their performance
while retaining simple operation and low maintenance.
Technical Assistance
Should you have any questions, please contact your local
GE sales representative or technical assistance at:
GE Oil & Gas
Attn : Becker Control Valves Technical Assistance
12970 Normandy Boulevard
Jacksonville, FL 32221
USA
Tel. +1-844-VALVE-GE
www.geoilandgas.com/valves
Page
Introduction ................................................................................................................................................ 1
Description ....................................................................................................................................................................1
Technical Assistance ................................................................................................................................................1
Scope of Manual .........................................................................................................................................................2
Advantages of the Combination Chamber VRP-B-CH Pilot Controllers ...........................................2
Applications ..................................................................................................................................................................2
Technical Information ............................................................................................................................... 3
Technical Specifications ..........................................................................................................................................3
Materials of Construction .......................................................................................................................................3
Model Number Explanation ..................................................................................................................................3
Identification Tag........................................................................................................................................................3
Remote Setpoint Change Options......................................................................................................................4
Principles of Operation ............................................................................................................................. 5
Adjustment Procedures ............................................................................................................................ 6
Initial Adjustment .......................................................................................................................................................6
Fine Tuning Procedures ...........................................................................................................................................7
Troubleshooting ..........................................................................................................................................................8
Inspection Procedure ...............................................................................................................................................8
Annual Maintenance Checklist ............................................................................................................................9
Parts Ordering ............................................................................................................................................ 9
Seal Kits ..........................................................................................................................................................................9
VRP-B-CH Pilot Blank without Bottom Cartridge Parts ......................................................................... 12
VRP-B-CH Pilot Spring Chamber Parts .......................................................................................................... 13
Appendix .................................................................................................................................................... 14
Flow Calculations .................................................................................................................................................... 14
Accessories ............................................................................................................................................... 15
SP Series Set Point Change Pump: .................................................................................................................. 15
Remote Set Point Module: ................................................................................................................................... 15
AB Series Atmospheric Bleed Control: ........................................................................................................... 15
NBV Series No Bleed Valve: ................................................................................................................................ 15
DPS-2 Series Sensor Adjustments ................................................................................................................... 15
DPS Series Non-Bleed Sensor: .......................................................................................................................... 15
Assembly Procedures ............................................................................................................................. 16
Orifice Block Assembly ......................................................................................................................................... 17
175-CH Chamber Assemblies ........................................................................................................................... 25
175-CH Chamber Assemblies (Cont.) ............................................................................................................ 26
600-CH Chamber Assemblies ........................................................................................................................... 27
600-CH Chamber Assemblies (Contd.) .......................................................................................................... 28
1000/1500-CH Chamber Assemblies (Contd.) ........................................................................................... 29
1000/1500-CH Chamber Assemblies (Contd.) ........................................................................................... 30
Control Spring Assembly...................................................................................................................................... 31
175/600-CH Cap Assembly ............................................................................................................................... 32
List of recommended tools ................................................................................................................................. 29
Parts Silhouettes ...................................................................................................................................................... 30
Table of Contents
