Overview of vapor pressure pneumatic valve

the reduced pressure pneumatic valve main control main pneumatic valve fixed outlet pressure, the main pneumatic valve outlet pressure does not change due to the inlet pressure changing, not because of the change of the pneumatic valve outlet flow pressure to change its exports. Suitable for industrial water supply, fire water supply and water pipe network system

vacuum pneumatic valve installation and maintenance should be paid attention to the following:

( In order to convenient operation and maintenance, the pneumatic valve usually upright installation in horizontal pipe runs.

　　( Reduced pressure pneumatic valve installation must be in strict accordance with the direction of the arrow on the valve body and fluid flow in the same direction. If the water is not clean some impurities, must be installed in the reduced pressure of the pneumatic valve upstream water inlet filter ( We suggest that the filtering precision is not lower than. mm。

　　( In order to prevent the pneumatic valve after pressure to overpressure, pneumatic valve should be in the outlet of not less than M a reduced pressure pneumatic valve installation.

　　( Reduced pressure pneumatic valve in the pipeline of the check, in order to prevent the harm of water hammer, also can install small expansion tank, to prevent damage to pipeline and pneumatic valves, the filter must be installed in front of the reduced pressure pneumatic valve's inlet pipe, and the expansion tank must be installed after the decompression pneumatic valve outlet pipe! WBO( 。 If you need to vacuum pneumatic valve installed in the hot water system, you must be installed between the reduced pressure pneumatic valve and expansion tank check pneumatic valve. Both to expansion tank to absorb the increase due to thermal expansion of the volume of water, also can prevent the reverse flow of hot water or pressure fluctuation influence on vacuum pneumatic valve, to ensure that the pneumatic valve normal work for a long time.
YH high sensitivity steam pressure pneumatic valve belongs to the guide piston vacuum pneumatic valve, pneumatic valve by the main pneumatic valve and guide of two parts. The pneumatic valve is mainly composed of pneumatic valve seat, pneumatic valve, piston, cylinder liner, spring and other parts. Guide the pneumatic valve is mainly composed of pneumatic valve seat, pneumatic valve, diaphragm, adjusting spring and other parts. By adjusting spring adjusting the spring pressure setting outlet pressure, outlet pressure using the diaphragm sensor changes, through the pneumatic valve opening and closing drive piston guide adjustment main pneumatic valve throttling area the size of the flow area, realize the function of the reduced pressure regulator.

YH high sensitivity steam pressure pneumatic valve on the basis of the general vacuum pneumatic valve made the following improvement, increased the piston area, changed the structure of throttling, changed the seal form, improved the structure of the pneumatic valve guide and adjust the spring form, so as to improve the performance of the product from the following aspects.