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
Product Images
Frequently Ask Questions
A Pneumatic Emergency Shut Down Valve (ESDV) is an automatically operated valve designed to rapidly isolate process flow during an emergency. It uses compressed air to operate the valve and can move to a predefined safe position when the operating air or control supply is lost.
A pneumatic actuator operates the valve based on the control signal. In a spring-return configuration, the actuator uses compressed air for normal operation and a spring mechanism to move the valve toward its predetermined fail position when the air supply is lost.
The terms are often used interchangeably in industry, but ESDV generally emphasizes the valve's role within an emergency shutdown system and its defined fail-safe behavior.
The main purpose is to quickly isolate a hazardous or critical process section during events such as leakage, equipment failure, fire or other emergency conditions.
Alis Valves is a Pneumatic Emergency Shut Down Valve manufacturer and supplier in India, offering automated ESD valve solutions for oil & gas, refinery, petrochemical, chemical and hazardous process industries. The current range covers DN15–DN300, ANSI Class 150–900, with spring-return and double-acting pneumatic actuator configurations.
