Size: DN15~DN600

Pressure range: 0.25-2.0Mpa

Material: Carbon steel, 304, 316L stainless steel

Flame retardant core: 304, 316L stainless steel corrugated plate

Max Temp: 480C

Explosion proof level: IIA, IIB, IIC

Flange standard: HG20592-97 PN1.0 (customizable)

Surface treatment: SY7511-87 and API2000

Breathing valve is a kind of valve which not only ensures that the storage tank space is isolated from the atmosphere within a certain pressure range, but also can be connected with the atmosphere (breathing) when the pressure range is over or below. Its function is to prevent damage of the storage tank caused by overpressure or vacuum and to reduce the evaporation loss of storage liquid. It is mainly composed of valve seat, valve cover, protective cover and two sets of opening and closing devices controlled by vacuum and pressure.