Decompression decompression process of pneumatic valve

the reduced pressure pneumatic valve is a kind of special device, automatic reduce pipeline working pressure, it can be pneumatic valve before pipeline of high pressure to reduce to the pneumatic valve pipe after the required level. Reduced pressure pneumatic valve is widely used in high-rise buildings, the area of urban water supply pipe network pressure is too high, mines and other occasions, to ensure the water supply system in the water points to obtain the appropriate service water pressure and flow rate. In view of water leak rate and degree of waste almost as the water pressure is directly proportional to the size of feed water system, thus reduced pressure pneumatic valve have improve system operation condition and potential water-saving effect, YKXF gas reduced pressure pneumatic valve according to statistics, the water saving effects about %.
the structure of the reduced pressure pneumatic valve type many, common in the past have a spring in the diaphragm, piston, etc. Reduced pressure pneumatic valve's basic principle is to rely on pneumatic valve port on the local resistance to reduce the water pressure, water pressure drop by connecting the range of pneumatic disc membrane or the import and export pressure difference on both sides of the piston automatic adjustment. Years appeared some new type pneumatic valve, decompression YKF stainless steel gas reduced pressure pneumatic valve, such as constant ratio type pneumatic valve to relieve stress. Constant ratio reduced pressure principle is to use the floating piston in the hydraulic pneumatic valve body ratio control, import and export side pressure ratio is inversely proportional to the import and export side piston area ratio. The reduced pressure pneumatic valve work smoothly without vibration; Pneumatic valve body without spring, so no spring corrosion, metal fatigue failure were evident; Good sealing performance, leakage and dynamic pressure reduction (both The water flow and static pressure reduction ( Traffic too; Especially in relief at the same time does not affect the water flow.
setter in the non-working state, by the air input of the compressed air through A filter before entering A room and huotang legally. Pneumatic valve core in spring and air source pressure down on the pneumatic valve seat, make the room A and B room disconnect. To enter A room air through the pneumatic valve ( Also known as the valve to F room, and then through constant orifice after decompression, into the G and D chamber, respectively. Because at this time is not yet on the diaphragm strength, between the nozzle and the baffle spacing is bigger, at the time of gas flow from the nozzle flow resistance is small, G and D chamber air pressure is low, diaphragm and keep the original position. Into the room only trace gases mainly by the room B through pneumatic valve port discharge from the vent; Another part from outlets emptying. Outlet at this time, no air output, the nozzle flow and emptying of trace gases are necessary to maintain nozzle baffle device work, for it is no power consumption volume, so I hope its consumption as small as possible.

basic properties ( Regulating range: it refers to that the adjustable limit of the reduced pressure pneumatic valve output pressure P, within the scope of the requirements of vacuum pneumatic valve to the specified precision. Regulating scope mainly related to pressure regulating spring stiffness.
( Pressure feature: it refers to the flow fixed value for g, caused by the input pressure fluctuation characteristics of the output pressure fluctuations. The smaller the output pressure fluctuation, the characteristics of vacuum pneumatic valve, the better. The output pressure must be less than the input pressure - Constant value was basically not changes over the input pressure.
( Flow feature: it refers to the input pressure - Timing, the output pressure changes along with the change of output flow g resistance. G when the flow changes, the output pressure changes as small as possible. Generally the lower the output pressure, which fluctuates according to the change of output flow.