Table of Contents
Introduction ......................................................................................................... 1
Description ........................................................................................................... 1
Scope of this Manual .......................................................................................... 2
Technical Assistance .......................................................................................... 2
Technical Information ........................................................................................ 2
Adjustment Procedure .....................................................................................11
Applications .......................................................................................................13
and Globe Valve Trim ............................................................................................ 17
Accessories ........................................................................................................27
Introduction
GE's Becker VRP-SB-PID series Natural Gas Controller
represents a breakthrough in pressure control technology for the
natural gas industry. Built to exacting specifications, this easily
maintained unit offers highly accurate control in a broad range
of operating environments. In addition to minimizing bleed gas,
the VRP-SB-PID series controllers are designed such that their
bleed gas can be routed to a lower pressure fuel gas system,
eliminating atmospheric bleed gas completely. 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.
Your VRP-SB-PID controller will come factory adjusted for
your particular application. The use of the adjustment
procedures in this manual will only become necessary upon
installation of a rubber goods replacement kit, or any other
disassembly or reassembly of the controller.
1 | GE Oil & Gas
Page
Assembly Manual..............................................................................................28
Top Body Assembly ............................................................................................... 28
Bottom Body Assembly ....................................................................................... 28
Bottom Cap Assembly ......................................................................................... 35
Bracket Mounting .................................................................................................. 36
Diaphragm Assembly #1 .................................................................................... 37
Diaphragm Assembly #2 .................................................................................... 37
Diaphragm Assembly #3 .................................................................................... 37
Cap Assembly .......................................................................................................... 45
Bolts and Washers ................................................................................................. 48
Washers and Nuts .................................................................................................. 49
Diaghragm ................................................................................................................. 50
O-Rings ......................................................................................................................... 51
Description
The Becker VRP-SB-PID is a proportional-integral-derivative
controller. This concept will be further explained in the
operations section of this manual. The VRP-SB-PID can
operate as a controller working in tandem with a positioner.
It can also operate as a high-pressure controller, controlling
a single acting actuator without the need for a positioner.
Another advantage of the VRP-SB-PID is its versatility.
With a few adjustments the VRP-SB-PID can be transformed
into a proportional plus derivative controller or VRP-SB-PD.
In VRP-SB-PD mode the controller can be used for highly
unstable systems for example, double stage cuts.
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