Pneumatic Piston-Type SSS Actuator | Schlumberger
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Pneumatic Piston-Type SSS

Actuator

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SSS surface safety system actuators include the pneumatic piston actuator, which is used in air-operated systems and typically is mounted to the upper master and wing valve for sequenced closure during shutdown operations. To open the gate valve, the actuator supplies a downward force upon application of pneumatic pressure from an external source. When control pressure is relieved, pressure in the valve body, aided by a compression spring in the actuator, returns the piston to its normal position. The loss of control pressure causes the actuator to act as a fail-safe closed device when adapted to reverse-acting gate valves. 

The pneumatic piston actuator operates valves in sizes from 1 13/16 through 16 in. The actuator piston is offered in sizes between 8 and 20 in to optimize the control pressures for the application.

Features

  • Quick-Disconnect bonnet that permits removal of the actuator without depressurizing the valve, which greatly reduces downtime and lost production
  • Rising stem provides visual indication of valve position
  • External safety relief device protects the actuator from overpressurization
  • Compact design permits easy maintenance in confined areas
  • Wirecutting capabilities on specific models provide fail-safe gate closure during wireline operations
SSS Pneumatic Piston Type Actuator

Specifications

Service for 13-in piston
  • Maximum operating pressure: 250 psi [17 bar]
  • Production test pressure: 405 psi [28 bar]
Maximum Control Pressure
  
Mounted on 2-in valve
(0.016 × valve pressure) + 5 psi [0.34 bar]
Mounted on 2 1/2-in valve
 (0.018 × valve pressure) + 5 psi [0.34 bar]
Mounted on 3-in valve (0.025 × valve pressure) + 5 psi [0.34 bar]
Mounted on 4-in valve (0.036 × valve pressure) + 5 psi [0.34 bar]
Mounted on 5-in valve (0.062 × valve pressure) + 5 psi [0.34 bar]
Mounted on 6-in valve (0.072 × valve pressure) + 3 psi [0.20 bar]
Model Product Weight, lbm [kg]
1303  227 [103 kg]
1304
 248 [112 kg]
1306  283 [128 kg]
 
Service for 17-in piston
  • Maximum operating pressure: 250 psi [17 bar]
  • Production test pressure: 405 psi [28 bar]
Maximum Control Pressure     
Mounted on 2-in valve
(0.09 × valve pressure) + 5 psi [0.34 bar]
Mounted on 2-1/2-in valve (0.011 × valve pressure) + 5 psi [0.34 bar]
Mounted on 3-in valve (0.014 × valve pressure) + 5 psi [0.34 bar]
Mounted on 4-in valve (0.021 × valve pressure) + 5 psi [0.34 bar]
Mounted on 5-in valve
 (0.037 × valve pressure) + 5 psi [0.34 bar]
Mounted on 6-in valve
(0.042 × valve pressure) + 3 psi [0.20 bar]
Mounted on 8-in valve (0.070 × valve pressure) + 3 psi [0.20 bar]
Model Product Weight, lbm [kg]
1703 437 [198]
1704 450 [204]
1706 488 [221]
1708 508 [230]
 

Service for 20-in piston

  • Operating temperature range: –20 to 250 degF [–29 to 121 degC]
Maximum Control Pressure   
Mounted on 2-in valve
 (0.006 × valve pressure) + 5 psi [0.34 bar]
Mounted on 2-1/2-in valve (0.007 × valve pressure) + 5 psi [0.34 bar]
Mounted on 3-in valve (0.010 × valve pressure) + 5 psi [0.34 bar]
Mounted on 4-in valve (0.015 × valve pressure) + 5 psi [0.34 bar]
Mounted on 5-in valve (0.026 × valve pressure) + 5 psi [0.34 bar]
Mounted on 6-in valve (0.030 × valve pressure) + 3 psi [0.20 bar]
Model Maximum Operating Pressure, psi [bar]
Production Test Pressure, psi [bar]
Product Weight, lbm [kg]
2003 250 [17]
 240 [16]
 621 [282]
2004
 250 [17]
 240 [16]
 646 [293]
2006 250 [17] 405 [28]
 900 [408]
 

Clear Stem Protector

For actuator applications

See the actuator's rising stem while preventing damage to it.

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