Specification Brand : YMT BulletPoint1 : 【Application】Widely Fits for Troy-Bilt and Briggs & Stratton and Snapper pressure washer.Part number # 190591GS. BulletPoint2 : 【Function】This kit is used to replace the check valve which can attach to the pump head to help maintain safe working water pressure in the pump. BulletPoint3 : 【Superior Material】 Elaborate designed and manufactured. Made of high quality stainless steel with black oxide coating and high quality plastic and rubber for strength, durability and longevity, ensure anti-rust and have an unparalleled long lifespan. BulletPoint4 : 【when do you need it】Check valves can become damaged from air entering the inlet or from chemical residue left inside the pump. Damaged valves can prevent water from building up pressure, and if this occurs the valves will need to be replaced. BulletPoint5 : 【Note】Just be sure to observe closely the orientation of Manifold Bolts, Head Bolts, O-rings, etc. when you take the pump apart. Remember to lubricate the o-rings when you reassemble the works. And be sure to keep water out of the pump when stored for the winter. Color : Wh20 - 163cc Centrifugal Water Pump ExternallyAssignedProductIdentifier1 : 0371904814766 ExternallyAssignedProductIdentifier2 : 371904814766 Hazmat : auto-grounding ItemName : YMT 25PCS Pressure Washer Pump Valve Check Kit 190591GS fits for Briggs and Stratton, Snapper, Troy-Bilt, Craftsman ItemPackageDimensions_Height : 11.5062 centimeters ItemPackageDimensions_Length : 1.7018 centimeters ItemPackageDimensions_Width : 10.3886 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : pressure-washer-accessories Manufacturer : Yeqin Material : Cast Iron Material1 : Plastic Material2 : Stainless Steel NumberOfItems : 1 PartNumber : WH20 PowerSourceType : Wind Powered ProductDescription : 25PCS Pressure Washer Pump Valve Check Kit 190591GS fits for Briggs and Stratton, Snapper, Troy-Bilt, Craftsman ProductSiteLaunchDate : 2012-09-13T08:00:01.000Z Runtime : 1.5 hours Size : 2" Style : High Pressure, Centrifugal, Self-priming SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 1