GE GEA19651 Brochure
GE Oil & Gas
Becker* Rotary Piston Double
Acting (RPDA)
Heavy -duty, high performance applications
require RPDA Actuators
2
Becker RPDA Rotary Piston Double Acting
Actuators from GE Oil & Gas are ideally
suited for operations that demand a lock
last failure mode, including below ground
regulation and bleed-to-pressure
applications. These long-lasting, compact,
durable, and maintenance free actuators
can be retrofitted onto almost all pipeline
valves. RPDA Actuators are built to accept
high pressure power gas and can
incorporate options that eliminate
emissions and economically reduce
below-ground noise.
Features
Bleed to Pressure System* can
eliminate bleed gas emissions
Retrofits to almost any pipeline valve
High pressure RPDA actuator accepts
high pressure natural gas up to 500
psig (3447 kPa).
Upright actuator design saves space
and promotes longer actuator piston
seal life
Designed to be maintenance free
Comes equipped with a precision linear
scale that indicates valve position in ten
degree increments.
Crank-arm design actuators are
specifically suited for control valve
applications
May be mounted in any installation
orientation
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Technical Specifications
Actuator Mechanism Type
Rotation (Output)
Actuator Stops
Installation
Coating
Power Gas Requirements
Pneumatic crank arm
90° (standard)
Integral
Vertical (recommended),
Horizontal
Epoxy (standard)
Sweet natural gas
500 psig (3447 kPa) Models
Maximum Power Gas
10L and smaller 4
50 psig (3103 kPa) Models 12L
and larger
Minimum Power Gas
50 psig(345 kPa)
recommended
-20°F to +160°F (-29°C to
Operating Temperature
Range
+71°C) standard, -30°F to
+160°F (-34°C to +71°C)
(Optional low temp. spec.)
Torque Output
Dimensions
See Table 7
See Tables 3, 4, and 5
Filtered to 100μ nominal. Free
Sweet Natural Gas
Specification
of excessive moisture (< 7 lbs.
entrained H2O per 1.0 mmscf)
and liquid hydrocarbons.
If excessive moisture or hydrocarbon content is present, a
Filter-Dryer may be necessary. For adequate filtration and
elimination of moisture, a Becker Model FD-1500 Filter-Dryer
should be installed. Refer to Becker FD-1500 literature to
determine if a Model FD-1500 Filter-Dryer is necessary.
Figure 2 - Becker RPDA Actuated Control Valves
A pressure control regulator station is shown here with Becker RPDA
actuators and T-Ball Control Valves. The RPDA actuators are equipped
with Becker VRP-CH Valve Regulator Pilots (VRP). The VRP is capable
of providing extremely accurate pressure control with fast response
necessary for power plant type applications. Additionally, note that
the VRP-CH pressure control pilots are equipped with Model VB-250
Volume Boosters to increase stroking speed. The primary regulator is equipped with a QTCV-T2 Quiet Trim Control Valve to provide
decreased noise during operation. The monitor regulator is equipped
with a FPCV-T0 Full Port Control Valve that ensures bubble tight shutoff with class VI shutoff.
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RPDA Rotary Piston Double Acting Actuator Components
1
16
2
3
4
5
6
7
8
9
10
11
17
18
20
21
22
23
12
13
14
15
19
30
29
24
25
28
27
26
32
31
33
Table 1 - RPDA Rotary Piston Double Acting Actuator parts description and materials
Item Description Material Item Description Material
1 Cylinder Carbon Steel 18 Indicator Screw Stainless Steel
2 Jam Nut Carbon Steel 19 Indicator Frame Screw Carbon or Stainless Steel
3 Rod Clevis Carbon Steel 20 Tru-Arc Ring Carbon Steel
4 Indicator Bar Stainless Steel 21 Torque Arm Pin Stress Proof Steel
5 Position Indicator Aluminum 22 Pin Clamp Carbon Steel
6 Rod Clevis Pin Stress Proof Steel 23 Pin Clamp Hardware Carbon Steel
7 Tru_Arc Ring Carbon Steel 24 Square Key Carbon Steel
8 Connecting Link Carbon Steel 25 Outboard Bearing Belt Carbon Steel
9 Cover Plate Gasket Rubber 26 Outboard Bearing Washer Carbon Steel
10 Cover Plate Carbon Steel 27 Outboard Bearing Plate Carbon Steel
11 Cover Plate Nut Carbon Steel 28 Outboard Bearing Duralon
®
12 Cylinder Bolt Carbon Steel 29 Actuatot Housing Carbon Steel
13 Cylinder Lockwasher Carbon Steel 30 Torque Arm Carbon Steel
14 Cylinder Nut Carbon Steel 31 Adapter Plate Carbon Steel
15 Indicator Frame PVC 32 Stud Carbon Steel
16 Indicator Gasket Rubber 33 Nut Carbon Steel
17 Lexan Cover Lexan 34 Vent Elbow Plastic
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