The valve body structure has overflow and the decompression speed is fast and intuitive High accuracy of regulation and sensitive response The structure can install the original gas pressure gau the original gas vent valve and the application is various Easy installation Reverse vertical and horizontal installation can be made according to customerspreferences The appearance is atmospheric and beautiful This square pneumatic pressure regulating valve is widely used in directline oilfree silencer and small belt conveyor, Manufacturer: POAHNCU