Dual Acting Air Valve

A Dual Acting Air Valve is designed to perform two important functions in a pipeline system: releasing trapped air during normal operation and admitting air during filling or draining conditions. By automatically managing air inside the pipeline, it helps prevent air pockets that can restrict flow, cause pressure loss, or lead to water hammer.

This type of air valve also allows air to enter the pipeline during negative pressure or emptying, preventing vacuum formation that could damage pipes or equipment. Dual acting air valves improve system efficiency, enhance pipeline safety, and are widely used in water supply, irrigation, sewage, and industrial piping systems.

Features

Dual Function Operation – Releases trapped air during operation and admits air during draining or vacuum conditions.
Prevents Air Lock & Vacuum – Eliminates air pockets and protects pipelines from collapse.
Reduces Water Hammer – Minimizes pressure surges for smoother system operation.
Automatic Operation – Works without manual intervention based on system conditions.
Improves Flow Efficiency – Ensures uninterrupted and efficient fluid movement.
Durable Construction – Designed for long service life in demanding pipeline environments.

Technical Specifications

Valve Type: Dual Acting Air Valve
Operation: Automatic
Body Material: Cast Iron / Ductile Iron / Stainless Steel
Float Material: Stainless Steel / Polypropylene
Seat Material: Rubber / EPDM / NBR
End Connection: Flanged / Threaded
Pressure Rating: PN10 / PN16 / PN25
Size Range: 25 mm to 300 mm
Temperature Range: Up to 80°C (higher on request)
Applicable Media: Water / Wastewater
Installation: Vertical, at high points of pipeline
Standards: IS / ANSI / DIN
Testing: Hydrostatic and functional testing as per standards