fire pump air release valve

Use of fire pump Air Release Valve
The fire pump air release valve is commonly known as the air release valve. The function of the fire pump air release valve, the function of the Fire Hydrant Air Release Valve is to clear the fire pump
Over-compressed and under-compressed scenery during the row. These two phenomena cause excessive power of the fire pump cost. The source of the fire pump does not have a direct air release valve, not to mention that the exhaust pressure is fixed for a long time, and the compression ratio of the fire pump is It depends on the stop position of the intake port and the starting position of the exhaust port, but these two positions are fixed and firm, so Do not respond to changing suction pressure needs.
Function Of Air Release Valve to facilitate the automatic opening of the release valve when the exhaust valve cavity reaches the exhaust pressure prematurely, and the gas is eliminated and eliminated.
Except for overcompression. Fire Air Release Valve generally uses the lowest suction pressure to determine the compression ratio when planning the fire pump.
This determines the starting position of the exhaust port, which solves the phenomenon of insufficient compression.