27 | GE Oil & Gas
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Accessories
SP Series Setpoint
Change Pump
The SP pump provides a simple
and accurate method of applying
false signal pressure during initial
adjustment of the VRP-SB-PID pilot.
The pump can provide false signal
pressure of 10% - 20% in excess of
working pipeline pressure which
eliminates the need for nitrogen
bottles or electronic calibration
devices.
Remote Setpoint Module
Provides remote adjustment of
VRP-SB-PID setpoint via an electrical
signal. Standard input signals are
24 VDC pulse and 120 VAC pulse.
A 4- 20 mA input signal motor is
optional. All motors provide
4-20 mA setpoint feedback.
AB Series Atmospheric
Bleed Control
The AB maintains minimum
pressure differential across the
cylinder. AB control is required to
provide the necessary output to
operate the control valve under all
design conditions.
VB-250 Volume Booster
The VB-250 Volume Booster provides
additional volume capacity to the
VRP-SB-PID for use with large volume
control valve actuators. The VB Series
Volume Boosters may also be utilized
for applications that require additional
speed of operation.
Troubleshooting Note on the VB-250
In steady state the exhaust port of
the VB-250 Volume Booster should
be bubble tight. If booster vents gas
it can be for two reasons:
a. The diaphragm assembly is worn
out or defective.
b. The main supply valve is worn out
or defective.
VB-250 Volume
Booster Close-up
Exhaust
From
PID
Output
From
Power
Gas
To
Actuator
IN
OUT
VB-250
VRP-SB-PID
(Direct Acting)
Spring to Open Ball Valve
Power
Gas
