Manufacturer: Niikura Kogyo  Co., Ltd
Model: FIG No. 1410

FIG NO.1410 80MM Vacuum Relief Float Valve

Function
This device is installed at nuclear power generation facilities, such as being the vacuum relief valve for float typed water storage tanks of boiler.
If the pump stops, there will be a negative pressure condition in the piping. When it happens, this device will take air in to prevent the piping and machines connected from damaging by negative pressure.
In operation, when this device passes water, it can also be the air vent valve and the water seal valve. It can discharge the air out the piping automatically, and refrain water from leaking.