Master Flo’s PSE 150 and PSE 300 pneumatic piston actuators are designed for emergency shutdown (ESD) systems that automatically close gate valves on wellheads and flow lines under emergency conditions. The actuator is independently assembled and tested, enabling easy service and installation.
PSE pneumatic piston actuators are also available factory-assembled, tubed and tested with Stream-Flo Crown reverse-acting gate valves as packaged emergency shutdown system. Pneumatic ESD+ systems are also available factory assembled with Master Flo choke valves.
See the Stream-Flo Industries, our partner company, website for self-contained emergency shutdown systems.
Linear Pneumatic, Spring Fail Closed
PSE 150: 153 / 987
PSE 300: 303 / 1955
Instrument air, process gas (1% H2S) option
150 psig (10.3 barg)
–50°F to 150°F (–46°C to 66°C)
API 6A Annex F
* = required fields