Pneumatic Emergency Shut Down Valve
Resistant
Sealing
Operation
Long Life
Alis Valves is a leading manufacturer of Pneumatic Emergency Shut Down Valves designed for rapid isolation in critical industrial applications. Operated by a pneumatic actuator with spring return mechanism, these valves automatically move to a safe position (fail close/open) during power or air failure. They are widely used in oil & gas, petrochemical, refineries, and hazardous process industries where quick response and safety are essential.
Specifications
Size Range
DN15 to DN300 (½" to 12")
Body Material
WCB, SS304, SS316, SS316L
Seat Material
PTFE, RPTFE, Metal Seat
Fail Position
Fail Close / Fail Open
End Connection
Flanged, Wafer, Lug, Butt Weld
Leakage Standard
API 598 / ISO 5208
Pressure Rating
ANSI 150, 300, 600, 900
Ball / Disc Material
SS304, SS316
Actuator Type
Pneumatic (Spring Return / Double Acting)
Air Supply
4 to 7 Bar
Temperature Range
-20°C to +250°C (Design Dependent)
Mounting Standard
ISO 5211