Clear Stem Protector
For actuator applications
See the actuator's rising stem while preventing damage to it.
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.
Service for 5-in piston
|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
|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]|