VAG GA Industries Figure 939 Air & Vacuum Valves efficiently vent air and sewage gas from sewage forcemains as they are being filled and then close tight once the system is full and pressurized.They automatically open to admit air to limit vacuum formation when the forcemain is drained and/or a negative pressure occurs in the valve.
Figure 939 Air & Vacuum Valves are typically installed at system high points where air and sewage gas naturally rise during filling and vacuum first forms during draining.Short body sewage air & vacuum valves are ideal in shallow cover installations that preclude the standard elongated body.
Figure 939F includes optional 'back flushing attachments' to facilitate cleaning sludge and debris from the valve
GA Figure 930D, 930U:
Air & Vacuum Valve for Water, FLG x Cowl
GA Figure 930DT:
Air & Vacuum Valve for Water, FLG x NPT
GA Figure 930T:
Air & Vacuum Valve for Water, NPT x NPT
GA Figure 931:
Air & Vacuum Valve for Water, With Surge Check
GA Figure 933:
Air & Vacuum Valve for Water, With Throttle Device
GA Figure 935:
Air & Vacuum Valve for Sewage, Standard Body
GA Figure 939:
Air & Vacuum Valve for Sewage, Short Body
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GA Industries sewage and wastewater valves are specially designed to accommodate the rigorous demands of the sewage collection, pumping and treatment process.
Whether a large regional sewage pump station, a small lift station or in-plant process pumping, GA Industries line of wastewater check, pump control and surge relief valves provide reliable service under difficult operating conditions. GA Industries ECO-Centric® plug valves handle solids and stringy material and are used in sewage and wastewater systems for pump, pipeline or process isolation.
Our full range of sewage and wastewater air valves automatically release air and sewage gas from forcemains to maintain pumping efficiency and minimize pipeline corrosion.