Compared with the general gravity loading type and spring type breathing valve, the pilot type breathing valve has higher sealing performance and can achieve full displacement when the overpressure is less than 10%. Therefore, the operating pressure of the pilot type breathing valve can be close to the maximum design pressure of the tank, so as to reduce the evaporation loss and improve the economic performance.

Model Model

Vent to atmosphere pilot operated pressure / vacuum relief valve

Pipe awaypilot operated pressure / vacuum relief valve

Vent to atmosphere / pilot operated pressure relief valve

Pipe away / pilot operated pressure relief valve

Design features

U caliber: 2 ″ ~ 12 ″ (DN50 ~ DN300);

U 7410, 8410 series breathing valve discharge port is the same as import, convenient for users to choose;

The discharge port of u 7420 and 8420 series respiration valves is larger than that of the imported ones, so as to increase the discharge capacity;

When the overpressure is less than 10%, the full displacement can be achieved;

U 7410, 8410 air emissions;

U 7420, 8420 pipeline discharge;

U design and inspection shall be in accordance with API 2000;

U flange standard according to ANSI B16.5, according to user requirements, en1092, JIS, Hg / T 20592 ~ 20615, GB / T 9113 and other standards can be selected,

U selected materials: aluminum alloy, carbon steel, stainless steel, other special materials:

Setting pressure / vacuum