Features 1、Built-in check valve prevents the reverse flow of gas. 2、Meet the requirements of welding process, no influence on the flame temperature, gas flow, etc. 3、High quality brass construction, rugged and corrosion resistant. 4、Easy to control, check, clean and repair. 5、brand new and high quality. Specification Features: Built-in check valve prevents the reverse flow of gas. Meet the requirements of welding process, no influence on the flame temperature, gas flow, etc. High quality brass construction, rugged and corrosion resistant. Easy to control, check, clean and repair. brand new and high quality. Specification: Type: HF - 2 Size: M16*1.5 Working medium: Acetylene / Oxygen Working pressure: Medium pressure (MPa) Rated flow: 3 m3/h Thread Inner Diameter: M14 (mm) External Thread Diameter: M16 (mm) Tooth Spacing:1.5mm Action principle: Dry type Device location: Centralization type Weight: Approx. 2600g / 91.7oz Package list: 1 * Acetylene Flashback Arrestor 1 * Oxygen Flashback Arrestor Note: The product is a metric thread, and there may be incompatibility in North America. Please check the product information before ordering. Package List