Table Of Contents; Introduction; Description; Technical Assistance - GE Becker VRP-B-CH Series Instruction Manual

Valve regulator pilots

Table of Contents

Introduction ................................................................................................................................................ 1

Technical Information ............................................................................................................................... 3

Principles of Operation ............................................................................................................................. 5

Adjustment Procedures ............................................................................................................................ 6

Parts Ordering ............................................................................................................................................ 9

Appendix .................................................................................................................................................... 14

Accessories ............................................................................................................................................... 15

Assembly Procedures ............................................................................................................................. 16

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

1 | GE Oil & Gas

Description ....................................................................................................................................................................1

Technical Assistance ................................................................................................................................................1

Scope of Manual .........................................................................................................................................................2

Advantages of the Combination Chamber VRP-B-CH Pilot Controllers ...........................................2

Applications ..................................................................................................................................................................2

Technical Specifications ..........................................................................................................................................3

Materials of Construction .......................................................................................................................................3

Model Number Explanation ..................................................................................................................................3

Identification Tag........................................................................................................................................................3

Remote Setpoint Change Options......................................................................................................................4

Initial Adjustment .......................................................................................................................................................6

Fine Tuning Procedures ...........................................................................................................................................7

Troubleshooting ..........................................................................................................................................................8

Inspection Procedure ...............................................................................................................................................8

Annual Maintenance Checklist ............................................................................................................................9

Seal Kits ..........................................................................................................................................................................9

VRP-B-CH Pilot Blank without Bottom Cartridge Parts ......................................................................... 12

VRP-B-CH Pilot Spring Chamber Parts .......................................................................................................... 13

Flow Calculations .................................................................................................................................................... 14

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

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

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.