Combines the features of both an air & vacuum valve and an air release valve.
Air & vacuum component discharges large volumes of air during filling of the system.
Air & vacuum component admits large volumes of air during drainage and at water column separation.
The air release component releases entrapped air in pressurized systems.
Dynamic design allows for high velocity air discharge while preventing premature closure.
Innovative rolling seal mechanism.
Available in sizes: 1/2", 3/4", 1", 2" threaded male connections, NPT or BSPT.
Materials and Corrosion Protection
The body is made of high-strength composite materials.
All operating parts are made of specially selected, corrosion- resistant materials.
D-040-C body is protected by a shell made of Cast Iron ASTM A48 CL.35B.
Working pressure range: 0.2-16 bar.
Maximum operating temperature: 60°C.
Maximum intermittent temperature: 90° C.
At pump stations
Downstream and upstream of shut-off valves After deep-well pumps
On long constant-sloped pipeline segments
At peaks along the pipeline and at peaks relative to hydraulic gradient.
Additional protective shell for anti-vandalism/theft applications.
Available in: PN 16 – DN15, 20, 25 ,50