AS a single joint oil tank breather valve details: a single tank breathing valve associated structural features: oil tank breather valve breathing valve, also known as marine, sub-AS single joint oil tank breather valve and BS double tank breathing valve are two, for the installation of crude oil, gasoline, kerosene, light diesel oil, aromatic hydrocarbons such as ship cargo piping system is a major pipeline safety equipment, is to protect the pipeline from the evaporation loss and from damage when under overpressure or vacuum effect. Ben Tian valve production of single-joint oil tank breather valve, with a compact, ventilation volume, leakage, good sealing performance characteristics. And a small size, light weight, maintenance, cleaning, easy to replace and so on. Second, a single joint oil tank breather valve Material Table: Part Name Material name body cast steel, gray cast iron disc suction port cover guide rod stainless steel ring pull the handle ordinary cast bronze seat springs Bonnet gravity block on the disk Aluminum bronze spring adjusting sleeve stem waterproof silicon bronze metal grille-manganese brass bushing seal ring vulcanized rubber sheet for industrial use