Generally divided into two categories: One type is a flame arrester for large hydrogen pipes. This flame arrester is flanged. According to the inner diameter of the pipe, the specifications are: DN15, DN20, DN25, DN40, DN50, DN80, DN100, DN150, DN200, DN250 and so on. The second category is a flame arrester for hydrogen bottles. There are generally three types: The first type is connected to a hydrogen cylinder (one end is thread M16*1.5, one end is Φ8 or Φ10 leather joint); The second type is threaded at both ends (M16*1.5); hydrogen bottle flame arrester The third type is a leather joint at both ends (Φ8 or Φ10) Flame arresters are classified into three types: explosion-proof, burn-resistant and shock-proof. Flame arresters installed in series with the mechanical breathing valve at the top of the tank are usually explosion proof. Sliding Bar,Slide Bar Adjustable,Chrome Adjustable Sliding Bar,Sliding Bar With Handheld,shower rod,shower pipe,shower bar Kaiping Rainparty Sanitary Ware Technology Co.,Ltd. , https://www.rpshower.com