Combination Air Valve For Sewage

The d 020 sb combines the reliable and efficient properties of the a r i.

Combination air valve for sewage. Combination air valves perform the functions of an air vacuum valve exhaust large quantities of air on start up admits air on shut down and air release valves release air continuously during operation to maintain system efficiency and prevent pipeline surges. Residual air and gas is released through the small orifice while the system is in operation the large orifice automatically opens to admit air when the forcemain is drained and or a negative pressure occurs in the valve. Click on the following ari combination air valve for sewage wastewater types for more information. The air vacuum valve portion will exhaust the larger quantities of air present in a system.

Sewage combination air valve. Ari combination air valves for sewage and wastewater products are manufactured under the strictest quality control standards. Figure 942 combination air valves are typically installed at system high points where air and sewage gas naturally rise. D 020 combination air valve for wastewater with the added feature of a sub surface valve.

Operate same as air valves for water differing only in appearance with elongated taller bodies. Elongated bodies minimize clogging by permitting use of a much longer float stem to prevent the sewage from fouling up the mechanism. The val matic wastewater combination air valve performs both the functions of air release and air vacuum valves. Show details d 021 combination air valve for reclaimed and non potable water.