RZF type automatically turn off household gas pipeline valve (referred to as the automatic valve) is used to protect the liquefied petroleum gas and natural gas, pipeline gas for domestic security, a new class of patent-specific valve. Automatic valve is a rod, valve cover, rubber bowl, ring, armature film, ring magnets and other components. Gas from the inlet into the valve chamber, due to magnetic force, is normally closed outlet, manual extraction of the valve opening rod, the valve outlet is opened, gas from the outlet through the valve chamber into the combustion gas appliance. At this point, the gas pressure is greater than magnetic force, the valve is normally open, automatic valves work properly. When the air stops gas, pipeline and valve chamber gas pressure dropped to less than the critical work of automatic pressure valve, the valve automatically closes. Two air supply, you must re-extract the bar (open valve), automatic valve to return to normal work. Thus avoiding the gas without stopping off for gas appliance valves, when gas supply when the air again, making a large number of gas spills, leading to gas poisoning or fire.
Standards and technical requirements based on business, I use two 0.2 50kPa pressure gauge micro, small air compressor (with tanks), regulators, stopwatch, hoses and other test system components, see below.
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