External pilot valve opening and closing parts of factors

Pilot valve is a safety valve. Pilot valve opening and closing parts by the external force is normally closed state, when the media pressure equipment or pipeline increases, exceeds a predetermined value open automatically discharged outside the system through the media to protect the pipeline or equipment medium pressure exceeds values ​​specified.
Pilot valve is mainly used for boilers, pressure vessels and piping, control pressure does not exceed a predetermined value, for personal safety and equipment operation plays an important protective role. All kinds of safety valve should be mounted vertically, the outlet Water Heater Gas Valves should be no resistance, to avoid compression phenomenon. Gas Valves For Patio Heater before installation should be devoted to test and check their tightness. The use of the safety valve should be checked regularly.