Pneumatic Emergency Shut Down Valve

Corrosion
Resistant

Leak Tight
Sealing

Automated
Operation

Low Maintenance
Long Life

Alis Valves is a leading Pneumatic Emergency Shut Down Valve Manufacturer in India 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.

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Product Specifications and Overview

Size Range

DN15 to DN300 (½" to 12")

Pressure Rating

ANSI 150, 300, 600, 900

Body Material

WCB, SS304, SS316, SS316L

Ball / Disc Material

SS304, SS316

Seat Material

PTFE, RPTFE, Metal Seat

Actuator Type

Pneumatic (Spring Return / Double Acting)

Fail Position

Fail Close / Fail Open

Air Supply

4 to 7 Bar

End Connection

Flanged, Wafer, Lug, Butt Weld

Temperature Range

-20°C to +250°C (Design Dependent)

Leakage Standard

API 598 / ISO 5208

Mounting Standard

ISO 5211

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Industries Served

Cement

Engineered valve solutions tailored for critical Cement operating processes.

Chemical

Engineered valve solutions tailored for critical Chemical operating processes.

Data centres

Engineered valve solutions tailored for critical Data centres operating processes.

Fertilizer

Engineered valve solutions tailored for critical Fertilizer operating processes.

Applications

Ammonia

High-performance flow automation engineered for Ammonia operations.

CO₂

High-performance flow automation engineered for CO₂ operations.

Compressed Air

High-performance flow automation engineered for Compressed Air operations.

Cryogenic

High-performance flow automation engineered for Cryogenic operations.

Frequently Ask Questions

What Is a Pneumatic Emergency Shut Down Valve?

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.

How Does a Pneumatic ESD Valve Work?

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.

What Is the Difference Between Pneumatic ESD Valve and Emergency Shut-Off Valve?

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.

What Is the Main Purpose of an ESD Valve?

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.

Who Is a Pneumatic Emergency Shut Down Valve Manufacturer in India?

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.