D-040 PN 16

COMBINATION AIR VALVE (氣昇)       PATENTED

Description:

The D-040 Combination Air Valve has the features of both an Air-release valve and an Air/vacuum valve.
The Air-release component of the D-040 was designed to automatically release to the atmosphere small pockets of air as they accumulate at local high points along a pipeline when the pipeline or piping system is full and operating under pressure.

The Air/vacuum component was designed to automatically discharge or admit large volumes of air during the filling or draining of a pipeline or piping system. This valve will open to
relieve negative pressures whenever water column separation occurs.

Applications:

- Pump stations: after the pump and after the check valve
- After and before shut-off valve
- After deep-well pump
- On long hydraulic gradient water supply lines
- At peaks relatives to hydraulic gradient
- At the end of lines
- Before water meter
- On strainers