Plastic One Way Valve :The check valve is used in fluid system to prevent reverse fluid ,or used in pneumatic system to prevent reverse of compressed air , has enough pressure bearing capacity and rigidity to meet the actual use requirement within its proper range Non slip joint :The pipe port of the quick connect valve is designed with a pagoda shaped card slot ,non slip , high adsorption properties ,thermal stability ,chemical stability ,has high mechanical strength ,etc Scope of Application :The resistance and corrosion resistance air check valves widely used in water treatment ,air purification ,automotive parts ,machinery industry ,household appliances and other fields High Quality Material :Our check valves are made of High quality industrial materials ,the shell material is PP ,and the diaphragm material is silicone rubber or Viton（Optional） Specification :Sealing material: VITON , SILICONE(Optional)Type(Optional) :PP shell/SILICONE Sealing material ,PP shell/VITON Sealing materialSize : 3/8" 10mmConnection form :quick install, Manufacturer: Oumefar