进口阻火呼吸阀

　　RETZ瑞茨/美国，我们一直致力于流体控制领域的持续创新，始于2005……

　　呼吸阀是维护储罐气压平衡，减少介质挥发的安全节能产品，呼吸阀充分利用储罐本身的承压能力来减少介质排放，其原理是利用正负压阀盘的重量来控制储罐的排气正压和吸气负压；当往罐外抽出介质，使罐内上部气体空间的压力下降，达到呼吸阀的操作负压时，罐外的大气将顶开呼吸阀的负压阀盘顶开，使外界气体进入罐内，使罐内的压力不再继续下降，让罐内与罐外的气压平衡，来保护储罐的安全装置。Breathing valve is a safe and energy-saving product that maintains the pressure balance of storage tanks and reduces medium volatilization. Breathing valve fully utilizes the pressure capacity of the storage tank itself to reduce medium emissions. Its principle is to use the weight of positive and negative pressure valve discs to control the exhaust positive pressure and suction negative pressure of the storage tank; When the medium is extracted from the outside of the tank, the pressure in the upper gas space inside the tank decreases, reaching the operating negative pressure of the breathing valve. The atmosphere outside the tank opens the negative pressure valve disc of the breathing valve, allowing external gas to enter the tank, preventing the pressure inside the tank from continuing to decrease, and balancing the pressure inside and outside the tank to protect the safety device of the tank.

　　进口阻火防爆呼吸阀产品详情Product details

　　RETZ全天候阻火呼吸阀利用储罐本身的承压能力来减少介质排放，原理是利用正负压阀盘的重量来控制储罐的排气正压和吸气负压。

　　1.当罐内介质的压力在呼吸阀的控制操作压力范围之内时，呼吸阀不工作，保持油罐的密闭性；

　　2.当往罐内补充介质，使罐内上部气体空间的压力升高，达到呼吸阀的操作正压时，压力阀被顶开，气体从呼吸阀呼出口呼出，使罐内压力不在继续增高；

　　3.当往罐外抽出介质，使罐内上部气体空间的压力下降，达到呼吸阀的操作负压时，罐外的大气将顶开呼吸阀的负压阀盘顶开，使外界气体进入罐内，使罐内的压力不再继续下降，让罐内与罐外的气压平衡，来保护储罐的安全装置。

　　进口阻火防爆呼吸阀设计标准Design standards

　　公称通径：DN25 ~ DN300（1” ~ 12”）

　　阀体材质：碳钢、304、316L

　　阀芯材质：304、316L

　　阻火芯件材质：不锈钢防爆阻火波纹板

　　膜片材质：丁腈橡胶、聚四

　　开启压力设定范围：

　　A: +355pa(+36mmH2O) -295pa(-30mmH2O)

　　B: +980pa(+100mmH2O)-295pa(-30mmH2O)

　　C: +1950pa(+200mmH2O) -295pa(-30mmH2O)