Specification Brand : Vaphy BulletPoint1 : 【2-Pack & Durable Material】The flashback arrestor is made of pure copper, which is sturdy and durable. BulletPoint2 : 【Working Pressure】The maximum bearing pressure of oxygen check valve is 15bar/210PSI. The maximum bearing pressure of acetylene check valve is 1.5bar/21PSI. BulletPoint3 : 【Specification】The thread specification of air inlet and air outlet of flashback arrestor is 9/16-18 B size. BulletPoint4 : 【Check Valve】The one-way valve design allows the flashback arrestor to guarantee that gas can merely flow in one direction instead of back flow to prevent accidents. BulletPoint5 : 【Note】For installation between the regulator and hoses. The acetylene arrestor in this set can also be used for Propane or Mapp gas. ItemName : Vaphy Oxygen Acetylene Flashback Arrestors Set 2-Set Regulator End 9/16-18 Threads B Size ItemPackageDimensions_Height : 2.2 inches ItemPackageDimensions_Length : 5.7 inches ItemPackageDimensions_Width : 3.9 inches ItemTypeKeyword : welding-gas-regulators Manufacturer : Vaphy NumberOfBoxes : 1 PartNumber : FAS-Blue 2-Pack ProductDescription : Oxygen Acetylene Flashback Arrestors Set 2-Pack Regulator End 9/16-18 Threads B Size ProductSiteLaunchDate : 2023-09-20T03:52:55.637Z Style : B-2 Set SupplierDeclaredDgHzRegulation : not_applicable UnspscCode : 27000000