Double composite exhaust the USES and working principle of pneumatic valve

double composite exhaust pneumatic valve USES:
double composite exhaust pneumatic valve installed in the path of the water pipe, used to discharge the air in the pipe, to eliminate affects normal due to save gas drainage systems, it is a kind of energy-saving equipment, when the pipe need to drain or vacuum, can add automatically from this pneumatic valve into the air, to speed up the deformation of thin-wall copper tube drainage and protection from rupture, and prevent the pipe water from leaking into the pipeline.
double mouth composite exhaust pneumatic valve working principle:
. Under the condition of no water pressure, float and pneumatic disc are landing in protecting tube. When the water filling pipe, a large number of air discharge from the vent.
. Air nearly row do, water began to into the pneumatic valve will float float, float and pneumatic disc holder, plug the large vent, stop the water to drain out.
. Pneumatic valve plug large vent, as long as the water in the pipe and the stress status, pneumatic disc won't fall. If the air inside the pipe when accumulated to a certain amount in the exhaust pneumatic valve, due to the buoyancy decrease of float down, air guide bar from small vent out. The air after all, float plug small vent rise again.
. Produce negative pressure in the pipeline, pneumatic disc and float were sucked falls and from the outlet of filling into the air.