2 Pcs of Air and Vacuum Release Valve 2 Inch, HT-90P
These Air Release valve or Safety Valves Help In Avoiding Possible Damages To Pipes And Accessories. Its Durable, Weather Resistant and Non-corrosive. A Vacuum Valve, or Air Vacuum Valve is a safety valve opening inward to admit air to a vessel in which the pressure is less than that of the atmosphere, in order to prevent collapse. It is Made of engineering plastic for durability.