HXF breathing tube connection recovery valve

Title: breathing valve associated with the takeover recovered Model: HXF with takeover recovery breathing valve caliber: DN50-250mm media: Oil Tel: 021-51097581 Yang Chen Product Description Overview: According to national standards, "fire protection design of petrochemical enterprises" (GB50160-92) states: "A and B liquid fixed roof tanks, flame arrester should be located and breathing valve." Visible breathing valve, flame arrester is indispensable tank safety. It can not only maintain the pressure balance tank, make sure the tank from damage during over-pressure or vacuum, and can reduce evaporation and loss of the tank medium. I produced the breathing valve, with a compact, ventilation volume, leakage, good sealing performance characteristics. Parts Material: Body Material Carbon Steel WCB, 304,316 stainless steel, aluminum positive pressure valve plate material stainless steel 304, aluminum vacuum valve plate material stainless steel 304, PTFE PTFE Ambient temperature ℃ -30 ~ 60