Diaphragm valves use a flexible diaphragm to separate the flow stream from the closure element. Gas metering, throttling or leak valves control the flow of gas into chamber or process vessel. Vacuum ...

Pressure relief valves are designed to provide protection from over-pressure in steam, gas, air, and liquid lines. Relief valves and back pressure regulators are the same device, only differing in ...

Separating the crankcase from the intake manifold, which is a source of varying air pressure, the PCV valve maintains the optimal level of vacuum in the crankcase to extract the products of blow ...