Model K Hydraulic Actuator | Schlumberger Products

Model K

Hydraulic actuators

Our line of SSS surface safety system actuators includes the Model K hydraulic actuator.  Its design utilizes a specialized piston and housing to handle high pressures as well as a strong power spring that ensures complete gate closure upon loss of control pressure.

In addition, the actuator includes the Quick-Disconnect bonnet, which separates the bonnet from the actuator. This action allows operators to maintain the actuator while the bonnet safely holds pressure from inside the gate valve.

The Model K actuator operates valves in sizes from 1 13/16 through 4 1/16 in, with valve working pressures up to 20,000 psi [1,379 bar]. These actuators are available with a 5- or 7-in piston to optimize control pressure to meet your application requirement.

Features

  • External safety relief device that protects the actuator from overpressurization
  • Quick-Disconnect bonnet permits removal of the actuator without depressurizing the valve, which greatly reduces downtime and lost production
  • Rising stem provides visual indication of gate valve position
SSS Model K Hydraulic Actuator

Specifications

Service for 5-in piston

  • Maximum operating pressure: 6,000 psi [414 bar]
  • Test pressure: 9,000 psi [641 bar]
  • Temperature range: –20 to 250 degF [–29 to 121 degC]
  • Product weight: 196 lbm [89 kg]
Standard, H2S, and CO2 Service
Maximum Control Pressure
Mounted on 2 1/2-in valve (0.124 × valve pressure) + 75 psi [5.1 bar]

Service for 7-in piston

  • Maximum operating pressure: 6,000 psi [414 bar]
  • Test pressure: 9,300 psi [641 bar]
  • Temperature range: –20 to 250 degF [–29 to 121 degC]
  • Product weight: 310 lbm [141 kg]
Standard, H2S, and CO2 Service Maximum Control Pressure
Mounted on 2 1/2-in valve (0.139 × valve pressure) + 75 psi [5.1 bar]
Mounted on 3-in valve
(0.150 × valve pressure) + 75 psi [5.1 bar]
Mounted on 4-in valve
(0.178 × valve pressure) + 75 psi [5.1 bar]

Share This