Features 1、Made of high quality brass material,with high strength and durability 2、Great replacement for the old or broken check valve 3、Easy to install with the thread connecting ends. 4、Features good sealing, aging and corrosion resistance 5、Check valves are used in piping systems to prevent backflow of media and to prevent the release of media in containers Specification Features: Made of high quality brass material,with high strength and durability Great replacement for the old or broken check valve Easy to install with the thread connecting ends. Features good sealing, aging and corrosion resistance Check valves are used in piping systems to prevent backflow of media and to prevent the release of media in containers It can also be used where the pressure may rise above the pressure of the main system to supply the auxiliary system Specification: Model: 401 Valve body material: brass Connection mode: thread Applicable object: water Type: DN15, DN20, DN25(Optional) Weight: Approx.117g~286g/4.1oz~10.1oz Package list: 1 x Brass Check Valve Package List