All Weather Fireproof Breather Valve

Description:

All Weather Fireproof Breather Valve is a ventilating device that installed on a fixed roof tan, which plays the role of reducing the evaporation loss of oil, and controlling the pressure of the storage tank, and preventing the introduction of external flame.

Specification:

Nominal Size:DN20~DN250

Connection End: Flange / Threaded

End Standard:GB, GOST, EN, DIN, ANSI, API etc.

Operation Pressure:

? Positive Pressure:355Pa~1765Pa

? Negative pressure:295Pa

Application:Urban construction, chemical industry, metallurgy, petroleum, pharmaceutical, food, beverage, environmental protection etc.