{"product_id":"pa-yvb9kms2-pressure-washer-unloader-valve-with-pressure-switch-3650-psi-oem-replacement-part","title":"PA YVB9KMS2 Pressure Washer Unloader Valve with Pressure Switch 3650 PSI – OEM Replacement Part","description":"\u003cp data-start=\"0\" data-end=\"187\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 5406\u003cbr data-start=\"21\" data-end=\"24\"\u003e\u003cstrong data-start=\"24\" data-end=\"37\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Parts → Unloader Valves → Pressure Switch Unloader Valves\u003cbr data-start=\"111\" data-end=\"114\"\u003e\u003cstrong data-start=\"114\" data-end=\"123\"\u003eType:\u003c\/strong\u003e PA YVB9KMS2 Pressure Washer Unloader Valve with Pressure Switch\u003c\/p\u003e\n\u003chr data-start=\"189\" data-end=\"192\"\u003e\n\u003cp data-start=\"299\" data-end=\"811\"\u003eThe \u003cstrong data-start=\"303\" data-end=\"383\"\u003ePA YVB9KMS2 Pressure Washer Unloader Valve with Pressure Switch (Part #5406)\u003c\/strong\u003e is a professional-grade OEM replacement unloader engineered to provide reliable pressure regulation and automatic system control for commercial and industrial pressure washer applications. Manufactured by \u003cstrong data-start=\"589\" data-end=\"606\"\u003ePA (P.A. SpA)\u003c\/strong\u003e, this heavy-duty unloader combines pressure-actuated bypass functionality with an integrated pressure switch, making it ideal for systems equipped with automatic shutdown or pressure-controlled operation.\u003c\/p\u003e\n\u003chr data-start=\"1401\" data-end=\"1404\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1406\" data-end=\"1432\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1434\" data-end=\"1965\"\u003e\n\u003cli data-section-id=\"snkwq3\" data-start=\"1434\" data-end=\"1488\"\u003eGenuine PA (P.A. SpA) OEM replacement unloader valve\u003c\/li\u003e\n\u003cli data-section-id=\"75y2jn\" data-start=\"1489\" data-end=\"1531\"\u003eIntegrated pressure switch functionality\u003c\/li\u003e\n\u003cli data-section-id=\"1alras6\" data-start=\"1532\" data-end=\"1555\"\u003eRated up to 3,650 PSI\u003c\/li\u003e\n\u003cli data-section-id=\"1d0ei23\" data-start=\"1556\" data-end=\"1589\"\u003eSupports flow rates up to 8 GPM\u003c\/li\u003e\n\u003cli data-section-id=\"1tjntnq\" data-start=\"1590\" data-end=\"1636\"\u003eAutomatically diverts water into bypass mode\u003c\/li\u003e\n\u003cli data-section-id=\"3oc7ks\" data-start=\"1637\" data-end=\"1701\"\u003eHelps protect pumps and system components from pressure spikes\u003c\/li\u003e\n\u003cli data-section-id=\"15dnrqn\" data-start=\"1702\" data-end=\"1746\"\u003eCompatible with automatic shutdown systems\u003c\/li\u003e\n\u003cli data-section-id=\"1jrd0jp\" data-start=\"1747\" data-end=\"1794\"\u003eIntegrated gauge port for pressure monitoring\u003c\/li\u003e\n\u003cli data-section-id=\"3u46tj\" data-start=\"1795\" data-end=\"1845\"\u003eSuitable for hot and cold water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"7dzq54\" data-start=\"1846\" data-end=\"1885\"\u003eDurable commercial-grade construction\u003c\/li\u003e\n\u003cli data-section-id=\"1pt5a32\" data-start=\"1886\" data-end=\"1918\"\u003eAdjustable pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"7k7rs4\" data-start=\"1919\" data-end=\"1965\"\u003eDesigned for professional cleaning equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1967\" data-end=\"1970\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1972\" data-end=\"1999\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"2001\" data-end=\"2022\"\u003e\u003cstrong data-start=\"2001\" data-end=\"2017\"\u003ePart Number:\u003c\/strong\u003e 5406\u003c\/p\u003e\n\u003cp data-start=\"2024\" data-end=\"2055\"\u003e\u003cstrong data-start=\"2024\" data-end=\"2041\"\u003eManufacturer:\u003c\/strong\u003e PA (P.A. SpA)\u003c\/p\u003e\n\u003cp data-start=\"2057\" data-end=\"2076\"\u003e\u003cstrong data-start=\"2057\" data-end=\"2067\"\u003eModel:\u003c\/strong\u003e YVB9KMS2\u003c\/p\u003e\n\u003cp data-start=\"2078\" data-end=\"2147\"\u003e\u003cstrong data-start=\"2078\" data-end=\"2095\"\u003eProduct Type:\u003c\/strong\u003e Pressure Washer Unloader Valve with Pressure Switch\u003c\/p\u003e\n\u003cp data-start=\"2149\" data-end=\"2180\"\u003e\u003cstrong data-start=\"2149\" data-end=\"2170\"\u003eMaximum Pressure:\u003c\/strong\u003e 3,650 PSI\u003c\/p\u003e\n\u003cp data-start=\"2182\" data-end=\"2210\"\u003e\u003cstrong data-start=\"2182\" data-end=\"2204\"\u003eMaximum Flow Rate:\u003c\/strong\u003e 8 GPM\u003c\/p\u003e\n\u003cp data-start=\"2212\" data-end=\"2242\"\u003e\u003cstrong data-start=\"2212\" data-end=\"2236\"\u003eMaximum Temperature:\u003c\/strong\u003e 195°F\u003c\/p\u003e\n\u003cp data-start=\"2244\" data-end=\"2274\"\u003e\u003cstrong data-start=\"2244\" data-end=\"2265\"\u003eInlet Connection:\u003c\/strong\u003e 3\/8\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2276\" data-end=\"2307\"\u003e\u003cstrong data-start=\"2276\" data-end=\"2298\"\u003eOutlet Connection:\u003c\/strong\u003e 3\/8\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2309\" data-end=\"2340\"\u003e\u003cstrong data-start=\"2309\" data-end=\"2331\"\u003eBypass Connection:\u003c\/strong\u003e 3\/8\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2342\" data-end=\"2366\"\u003e\u003cstrong data-start=\"2342\" data-end=\"2357\"\u003eGauge Port:\u003c\/strong\u003e 1\/4\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2368\" data-end=\"2399\"\u003e\u003cstrong data-start=\"2368\" data-end=\"2388\"\u003ePressure Switch:\u003c\/strong\u003e Integrated\u003c\/p\u003e\n\u003cp data-start=\"2401\" data-end=\"2425\"\u003e\u003cstrong data-start=\"2401\" data-end=\"2421\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2427\" data-end=\"2430\"\u003e\n\u003ch2 data-section-id=\"1nv2y2h\" data-start=\"2432\" data-end=\"2464\"\u003ePressure Switch Functionality\u003c\/h2\u003e\n\u003cp data-start=\"2466\" data-end=\"2530\"\u003eThe integrated pressure switch allows the YVB9KMS2 to work with:\u003c\/p\u003e\n\u003cul data-start=\"2532\" data-end=\"2697\"\u003e\n\u003cli data-section-id=\"oc4k50\" data-start=\"2532\" data-end=\"2576\"\u003eAutomatic pressure washer shutdown systems\u003c\/li\u003e\n\u003cli data-section-id=\"wisbmo\" data-start=\"2577\" data-end=\"2612\"\u003eElectric pressure washer controls\u003c\/li\u003e\n\u003cli data-section-id=\"1uvkznm\" data-start=\"2613\" data-end=\"2639\"\u003eDelayed shutdown systems\u003c\/li\u003e\n\u003cli data-section-id=\"1yyg8cf\" data-start=\"2640\" data-end=\"2667\"\u003eStationary wash equipment\u003c\/li\u003e\n\u003cli data-section-id=\"7gcax3\" data-start=\"2668\" data-end=\"2697\"\u003eCommercial cleaning systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2699\" data-end=\"2716\"\u003eBenefits include:\u003c\/p\u003e\n\u003cul data-start=\"2718\" data-end=\"2848\"\u003e\n\u003cli data-section-id=\"km3d6j\" data-start=\"2718\" data-end=\"2742\"\u003eReduced motor run time\u003c\/li\u003e\n\u003cli data-section-id=\"rwleio\" data-start=\"2743\" data-end=\"2765\"\u003eLower equipment wear\u003c\/li\u003e\n\u003cli data-section-id=\"16a1kho\" data-start=\"2766\" data-end=\"2797\"\u003eImproved operating efficiency\u003c\/li\u003e\n\u003cli data-section-id=\"705ixp\" data-start=\"2798\" data-end=\"2824\"\u003eEnhanced pump protection\u003c\/li\u003e\n\u003cli data-section-id=\"1m41ook\" data-start=\"2825\" data-end=\"2848\"\u003eExtended service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2850\" data-end=\"2853\"\u003e\n\u003ch2 data-section-id=\"1kehdxb\" data-start=\"2855\" data-end=\"2885\"\u003eWhat an Unloader Valve Does\u003c\/h2\u003e\n\u003cp data-start=\"2887\" data-end=\"2915\"\u003eThe YVB9KMS2 is designed to:\u003c\/p\u003e\n\u003cul data-start=\"2917\" data-end=\"3132\"\u003e\n\u003cli data-section-id=\"1guzp1l\" data-start=\"2917\" data-end=\"2946\"\u003eRegulate operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1g0tn2d\" data-start=\"2947\" data-end=\"2989\"\u003eDivert water flow during trigger release\u003c\/li\u003e\n\u003cli data-section-id=\"lj528y\" data-start=\"2990\" data-end=\"3026\"\u003ePrevent dangerous pressure buildup\u003c\/li\u003e\n\u003cli data-section-id=\"zv23ry\" data-start=\"3027\" data-end=\"3069\"\u003eProtect pumps, hoses, guns, and fittings\u003c\/li\u003e\n\u003cli data-section-id=\"1eg0b0n\" data-start=\"3070\" data-end=\"3098\"\u003eImprove system reliability\u003c\/li\u003e\n\u003cli data-section-id=\"dqh8hn\" data-start=\"3099\" data-end=\"3132\"\u003eExtend pressure washer lifespan\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3134\" data-end=\"3223\"\u003eWhen spraying stops, water is redirected through the bypass circuit until demand resumes.\u003c\/p\u003e\n\u003chr data-start=\"3225\" data-end=\"3228\"\u003e\n\u003ch2 data-section-id=\"vx2wyp\" data-start=\"3230\" data-end=\"3252\"\u003eCommon Applications\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1m7fp76\" data-start=\"3254\" data-end=\"3285\"\u003eCommercial Pressure Washing\u003c\/h3\u003e\n\u003cp data-start=\"3287\" data-end=\"3297\"\u003eIdeal for:\u003c\/p\u003e\n\u003cul data-start=\"3299\" data-end=\"3443\"\u003e\n\u003cli data-section-id=\"17aqqxb\" data-start=\"3299\" data-end=\"3330\"\u003eProfessional pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"cmzgkj\" data-start=\"3331\" data-end=\"3353\"\u003eMobile wash trailers\u003c\/li\u003e\n\u003cli data-section-id=\"sjf9mw\" data-start=\"3354\" data-end=\"3385\"\u003eContractor cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1hb3h7x\" data-start=\"3386\" data-end=\"3409\"\u003eFleet washing systems\u003c\/li\u003e\n\u003cli data-section-id=\"vvbnzo\" data-start=\"3410\" data-end=\"3443\"\u003eProperty maintenance operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"3xqko4\" data-start=\"3445\" data-end=\"3468\"\u003eIndustrial Cleaning\u003c\/h3\u003e\n\u003cul data-start=\"3470\" data-end=\"3586\"\u003e\n\u003cli data-section-id=\"1i0u86j\" data-start=\"3470\" data-end=\"3496\"\u003eManufacturing facilities\u003c\/li\u003e\n\u003cli data-section-id=\"1hsbtdy\" data-start=\"3497\" data-end=\"3522\"\u003eEquipment wash stations\u003c\/li\u003e\n\u003cli data-section-id=\"b5ztl1\" data-start=\"3523\" data-end=\"3559\"\u003eIndustrial maintenance departments\u003c\/li\u003e\n\u003cli data-section-id=\"1pu1k80\" data-start=\"3560\" data-end=\"3586\"\u003eHeavy machinery cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"e23doq\" data-start=\"3588\" data-end=\"3617\"\u003eAutomatic Control Systems\u003c\/h3\u003e\n\u003cul data-start=\"3619\" data-end=\"3753\"\u003e\n\u003cli data-section-id=\"kbejmc\" data-start=\"3619\" data-end=\"3664\"\u003ePressure-switch controlled pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"fesgef\" data-start=\"3665\" data-end=\"3692\"\u003eElectric pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"jdcret\" data-start=\"3693\" data-end=\"3717\"\u003eAutomated wash systems\u003c\/li\u003e\n\u003cli data-section-id=\"15d9pci\" data-start=\"3718\" data-end=\"3753\"\u003eStationary cleaning installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3755\" data-end=\"3758\"\u003e\n\u003ch2 data-section-id=\"ctfpuh\" data-start=\"3760\" data-end=\"3783\"\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cul data-start=\"3785\" data-end=\"4017\"\u003e\n\u003cli data-section-id=\"1bl7wox\" data-start=\"3785\" data-end=\"3815\"\u003eReliable pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"1bb2u3x\" data-start=\"3816\" data-end=\"3842\"\u003eImproved pump protection\u003c\/li\u003e\n\u003cli data-section-id=\"1gpagnp\" data-start=\"3843\" data-end=\"3876\"\u003eConsistent cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"cy3gob\" data-start=\"3877\" data-end=\"3905\"\u003eEnhanced equipment control\u003c\/li\u003e\n\u003cli data-section-id=\"h7y6fc\" data-start=\"3906\" data-end=\"3927\"\u003eReduced system wear\u003c\/li\u003e\n\u003cli data-section-id=\"9je23e\" data-start=\"3928\" data-end=\"3965\"\u003eAutomatic pressure-switch operation\u003c\/li\u003e\n\u003cli data-section-id=\"1wdzf4p\" data-start=\"3966\" data-end=\"3985\"\u003eLong service life\u003c\/li\u003e\n\u003cli data-section-id=\"c81ntm\" data-start=\"3986\" data-end=\"4017\"\u003eProfessional-grade durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4019\" data-end=\"4022\"\u003e\n\u003ch2 data-section-id=\"x2tt67\" data-start=\"4024\" data-end=\"4068\"\u003eSigns an Unloader Valve Needs Replacement\u003c\/h2\u003e\n\u003cp data-start=\"4070\" data-end=\"4105\"\u003eReplace the unloader if you notice:\u003c\/p\u003e\n\u003cul data-start=\"4107\" data-end=\"4308\"\u003e\n\u003cli data-section-id=\"zta6im\" data-start=\"4107\" data-end=\"4130\"\u003ePressure fluctuations\u003c\/li\u003e\n\u003cli data-section-id=\"42aigf\" data-start=\"4131\" data-end=\"4152\"\u003ePump cycling issues\u003c\/li\u003e\n\u003cli data-section-id=\"nm4f1b\" data-start=\"4153\" data-end=\"4178\"\u003ePressure switch failure\u003c\/li\u003e\n\u003cli data-section-id=\"tfjehp\" data-start=\"4179\" data-end=\"4194\"\u003eWater leakage\u003c\/li\u003e\n\u003cli data-section-id=\"uz2anl\" data-start=\"4195\" data-end=\"4218\"\u003eExcessive bypass flow\u003c\/li\u003e\n\u003cli data-section-id=\"op63ib\" data-start=\"4219\" data-end=\"4250\"\u003eDifficulty adjusting pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1n1a9ox\" data-start=\"4251\" data-end=\"4281\"\u003eReduced cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"1knavrr\" data-start=\"4282\" data-end=\"4308\"\u003eWorn internal components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4310\" data-end=\"4313\"\u003e\n\u003ch2 data-section-id=\"16dprsq\" data-start=\"4315\" data-end=\"4336\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003col data-start=\"4338\" data-end=\"4795\"\u003e\n\u003cli data-section-id=\"1n541am\" data-start=\"4338\" data-end=\"4402\"\u003eTurn off the pressure washer and relieve all system pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"10fm75t\" data-start=\"4403\" data-end=\"4465\"\u003eVerify compatibility with system pressure and flow ratings.\u003c\/li\u003e\n\u003cli data-section-id=\"oazjwl\" data-start=\"4466\" data-end=\"4524\"\u003eInstall using the proper 3\/8\" FPT plumbing connections.\u003c\/li\u003e\n\u003cli data-section-id=\"1574lo1\" data-start=\"4525\" data-end=\"4595\"\u003eInstall a pressure gauge in the gauge port for accurate adjustment.\u003c\/li\u003e\n\u003cli data-section-id=\"16k7utu\" data-start=\"4596\" data-end=\"4668\"\u003eConnect pressure switch wiring according to equipment specifications.\u003c\/li\u003e\n\u003cli data-section-id=\"jwieb1\" data-start=\"4669\" data-end=\"4710\"\u003eAdjust operating pressure as required.\u003c\/li\u003e\n\u003cli data-section-id=\"b4latf\" data-start=\"4711\" data-end=\"4795\"\u003eTest bypass and pressure-switch operation before returning the system to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-start=\"4797\" data-end=\"4919\"\u003e\u003cstrong data-start=\"4797\" data-end=\"4811\"\u003eImportant:\u003c\/strong\u003e Ensure all electrical connections comply with manufacturer recommendations and applicable electrical codes.\u003c\/p\u003e\n\u003chr data-start=\"4921\" data-end=\"4924\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"4926\" data-end=\"4956\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"4958\" data-end=\"5230\"\u003e\n\u003cli data-section-id=\"8e7fsu\" data-start=\"4958\" data-end=\"4997\"\u003eInspect regularly for leaks and wear.\u003c\/li\u003e\n\u003cli data-section-id=\"dwtr3i\" data-start=\"4998\" data-end=\"5054\"\u003eVerify pressure settings during scheduled maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"idp6dh\" data-start=\"5055\" data-end=\"5101\"\u003eTest pressure switch operation periodically.\u003c\/li\u003e\n\u003cli data-section-id=\"rst94\" data-start=\"5102\" data-end=\"5137\"\u003eMaintain proper water filtration.\u003c\/li\u003e\n\u003cli data-section-id=\"16ap0lr\" data-start=\"5138\" data-end=\"5193\"\u003eReplace worn seals and internal components as needed.\u003c\/li\u003e\n\u003cli data-section-id=\"1d60v9d\" data-start=\"5194\" data-end=\"5230\"\u003eFollow PA service recommendations.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PA","offers":[{"title":"Default Title","offer_id":53428890567019,"sku":null,"price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/5406UNLOADER.webp?v=1782498354","url":"https:\/\/generalsprayers.com\/products\/pa-yvb9kms2-pressure-washer-unloader-valve-with-pressure-switch-3650-psi-oem-replacement-part","provider":"GeneralSprayers","version":"1.0","type":"link"}