Specification Brand : Hunter BulletPoint1 : Check valve compatible with Pro Spray series spray body sprinklers. BulletPoint2 : Keeps lines from draining when the system is shut off. BulletPoint3 : Saves water. BulletPoint4 : Reduces liability. BulletPoint5 : Increases system life. Color : Yellow ConnectorType : Threaded CustomerPackageType : Standard Packaging ExteriorFinish : Stainless Steel ExternallyAssignedProductIdentifier : 8781939931604 ExternallyAssignedProductIdentifier1 : 098268005080 ExternallyAssignedProductIdentifier2 : 0098268005080 ExternallyAssignedProductIdentifier3 : 00098268279375 IncludedComponents : inc ItemDisplayDimensions_Length : 7 inches ItemDisplayWeight : 15 pounds ItemName : Hunter Pro Spray Check Valve 437400 ItemPackageDimensions_Height : 2.4892 centimeters ItemPackageDimensions_Length : 1.7018 centimeters ItemPackageDimensions_Width : 2.3114 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : industrial-check-valves Manufacturer : SPW Material : Rubber Material1 : Cast Iron Material2 : Bronze MaximumOperatingPressure : 450 pounds_per_square_inch ModelName : NH-250 ModelNumber : 437400 NumberOfItems : 1 NumberOfPieces : 1 NumberOfPorts : 2 PackageLevel : unit PartNumber : 437400 ProductDescription : Check Valves are for use in sprinkler heads that have low head drainage as a problem. The drain check valve keeps lines from draining when the system is shut off. This saves water, reduces liability, and increases system life. To Replace the Drain Check Valve: Remove the internal assembly from the case. Insert the large, irregular shaped end of the Drain Check Valve assembly into the bottom of the riser. The small circular rubber portion of the Drain Check Valve Assembly will remain outside of the riser. Replace the internal assembly and tighten it to the body. ProductSiteLaunchDate : 2013-04-22T19:41:52.611Z Size : 2" Female(new) SpecificationMet : asme Style : Threaded SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1 UnspscCode : 40141600 ValveType : air check valve