Specification Brand : Specialty MFG. Co. BulletPoint : Injection Fitting Only, Stenner, Injection Check Valve, 1/4". BulletPoint1 : Country/Region Of Manufacture: United States BulletPoint2 : Brand: Specialty MFG. Co. BulletPoint3 : When installing the check valve special attention should be paid to the direction of flow of the medium and the normal flow direction of the medium should be consistent with the direction of the arrow indicated on the valve body otherwise the normal flow of the medium will be cut off. Opening the pressure is small generally open 1-5KPA pressure liquid or gas it can open, good sealing Easy to install BulletPoint4 : Silicone Duckbill Valve Made from Environmentally friendly silicone material; Specifications Outer diameter 7.45* innr diameter 4.2* height 7.2 MM BulletPoint5 : Package content: 10 x check valve Color : No Color Department : mens ExteriorFinish : Rubber,Silicone ExternallyAssignedProductIdentifier : 7426854080402 ExternallyAssignedProductIdentifier1 : 742939991218 ExternallyAssignedProductIdentifier2 : 0742939991218 IncludedComponents : Great Product ItemDisplayWeight : 0.1 pounds ItemName : Specialty MFG. Co. 426-8B8-B 1/2" Barbs, Ball Cone Spring Check Valve, 1 PSI ItemPackageDimensions_Height : 0.95 inches ItemPackageDimensions_Length : 1.4 inches ItemPackageDimensions_Width : 3.1 inches ItemPackageQuantity : 1 ItemTypeKeyword : industrial-check-valves Manufacturer : Specialty MFG. Co. Material : Rubber ModelName : 79035 ModelNumber : 11010043 NumberOfBoxes : 1 NumberOfItems : 10 NumberOfPorts : 10 PackageLevel : unit PartNumber : 426-8B8-B ProductDescription : 426-8B8-B Specialty MFG. Co. 1/2" Barbs, Ball Cone Spring Check Valve, 1 PSI