{"product_id":"pa-vb350s-yu5075ks-pressure-washer-unloader-valve-10-gpm-5650-psi-oem-replacement-part","title":"PA VB350S\/YU5075KS Pressure Washer Unloader Valve 10 GPM 5650 PSI – OEM Replacement Part","description":"\u003cp data-start=\"0\" data-end=\"171\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 4906\u003cbr data-start=\"21\" data-end=\"24\"\u003e\u003cstrong data-start=\"24\" data-end=\"37\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Parts → Unloader Valves → High-Pressure Unloader Valves\u003cbr data-start=\"109\" data-end=\"112\"\u003e\u003cstrong data-start=\"112\" data-end=\"121\"\u003eType:\u003c\/strong\u003e PA VB350S\/YU5075KS Pressure Washer Unloader Valve\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"173\" data-end=\"176\"\u003e\n\u003cp data-start=\"276\" data-end=\"737\"\u003eThe \u003cstrong data-start=\"280\" data-end=\"346\"\u003ePA VB350S\/YU5075KS Pressure Washer Unloader Valve (Part #4906)\u003c\/strong\u003e is a heavy-duty OEM replacement unloader engineered for high-pressure commercial and industrial cleaning systems. Manufactured by \u003cstrong data-start=\"477\" data-end=\"494\"\u003ePA (P.A. SpA)\u003c\/strong\u003e, this professional-grade unloader is designed to handle up to \u003cstrong data-start=\"557\" data-end=\"570\"\u003e5,650 PSI\u003c\/strong\u003e, \u003cstrong data-start=\"572\" data-end=\"582\"\u003e10 GPM\u003c\/strong\u003e, and operating temperatures up to \u003cstrong data-start=\"617\" data-end=\"626\"\u003e195°F\u003c\/strong\u003e, making it ideal for demanding pressure washing applications that require maximum performance and reliability.\u003c\/p\u003e\n\u003chr data-start=\"1301\" data-end=\"1304\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1306\" data-end=\"1332\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1334\" data-end=\"1858\"\u003e\n\u003cli data-section-id=\"snkwq3\" data-start=\"1334\" data-end=\"1388\"\u003eGenuine PA (P.A. SpA) OEM replacement unloader valve\u003c\/li\u003e\n\u003cli data-section-id=\"povgck\" data-start=\"1389\" data-end=\"1433\"\u003eUltra-high-pressure rating up to 5,650 PSI\u003c\/li\u003e\n\u003cli data-section-id=\"ov5nxn\" data-start=\"1434\" data-end=\"1462\"\u003eFlow capacity up to 10 GPM\u003c\/li\u003e\n\u003cli data-section-id=\"1tjntnq\" data-start=\"1463\" data-end=\"1509\"\u003eAutomatically diverts water into bypass mode\u003c\/li\u003e\n\u003cli data-section-id=\"1pc90lp\" data-start=\"1510\" data-end=\"1569\"\u003eProtects pumps and system components from pressure spikes\u003c\/li\u003e\n\u003cli data-section-id=\"1pt5a32\" data-start=\"1570\" data-end=\"1602\"\u003eAdjustable pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"2gsckg\" data-start=\"1603\" data-end=\"1639\"\u003eHeavy-duty industrial construction\u003c\/li\u003e\n\u003cli data-section-id=\"3u46tj\" data-start=\"1640\" data-end=\"1690\"\u003eSuitable for hot and cold water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"bjv0nj\" data-start=\"1691\" data-end=\"1718\"\u003eReliable bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"7k7rs4\" data-start=\"1719\" data-end=\"1765\"\u003eDesigned for professional cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1ygtlzk\" data-start=\"1766\" data-end=\"1805\"\u003eHelps extend pump and system lifespan\u003c\/li\u003e\n\u003cli data-section-id=\"zvnk7v\" data-start=\"1806\" data-end=\"1858\"\u003eLong-lasting performance in demanding environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1860\" data-end=\"1863\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1865\" data-end=\"1892\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1894\" data-end=\"1915\"\u003e\u003cstrong data-start=\"1894\" data-end=\"1910\"\u003ePart Number:\u003c\/strong\u003e 4906\u003c\/p\u003e\n\u003cp data-start=\"1917\" data-end=\"1948\"\u003e\u003cstrong data-start=\"1917\" data-end=\"1934\"\u003eManufacturer:\u003c\/strong\u003e PA (P.A. SpA)\u003c\/p\u003e\n\u003cp data-start=\"1950\" data-end=\"1976\"\u003e\u003cstrong data-start=\"1950\" data-end=\"1960\"\u003eModel:\u003c\/strong\u003e VB350S\/YU5075KS\u003c\/p\u003e\n\u003cp data-start=\"1978\" data-end=\"2026\"\u003e\u003cstrong data-start=\"1978\" data-end=\"1995\"\u003eProduct Type:\u003c\/strong\u003e Pressure Washer Unloader Valve\u003c\/p\u003e\n\u003cp data-start=\"2028\" data-end=\"2059\"\u003e\u003cstrong data-start=\"2028\" data-end=\"2049\"\u003eMaximum Pressure:\u003c\/strong\u003e 5,650 PSI\u003c\/p\u003e\n\u003cp data-start=\"2061\" data-end=\"2090\"\u003e\u003cstrong data-start=\"2061\" data-end=\"2083\"\u003eMaximum Flow Rate:\u003c\/strong\u003e 10 GPM\u003c\/p\u003e\n\u003cp data-start=\"2092\" data-end=\"2122\"\u003e\u003cstrong data-start=\"2092\" data-end=\"2116\"\u003eMaximum Temperature:\u003c\/strong\u003e 195°F\u003c\/p\u003e\n\u003cp data-start=\"2124\" data-end=\"2156\"\u003e\u003cstrong data-start=\"2124\" data-end=\"2145\"\u003eInlet Connection:\u003c\/strong\u003e 3\/8\" BSP-M\u003c\/p\u003e\n\u003cp data-start=\"2158\" data-end=\"2191\"\u003e\u003cstrong data-start=\"2158\" data-end=\"2180\"\u003eOutlet Connection:\u003c\/strong\u003e 3\/8\" BSP-F\u003c\/p\u003e\n\u003cp data-start=\"2193\" data-end=\"2226\"\u003e\u003cstrong data-start=\"2193\" data-end=\"2215\"\u003eBypass Connection:\u003c\/strong\u003e 1\/2\" BSP-F\u003c\/p\u003e\n\u003cp data-start=\"2228\" data-end=\"2252\"\u003e\u003cstrong data-start=\"2228\" data-end=\"2248\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2254\" data-end=\"2257\"\u003e\n\u003ch2 data-section-id=\"1kehdxb\" data-start=\"2259\" data-end=\"2289\"\u003eWhat an Unloader Valve Does\u003c\/h2\u003e\n\u003cp data-start=\"2291\" data-end=\"2326\"\u003eThe VB350S\/YU5075KS is designed to:\u003c\/p\u003e\n\u003cul data-start=\"2328\" data-end=\"2593\"\u003e\n\u003cli data-section-id=\"1sa9zqa\" data-start=\"2328\" data-end=\"2385\"\u003eRegulate pressure throughout the pressure washer system\u003c\/li\u003e\n\u003cli data-section-id=\"1gzaa3t\" data-start=\"2386\" data-end=\"2438\"\u003eDivert water flow when the trigger gun is released\u003c\/li\u003e\n\u003cli data-section-id=\"lj528y\" data-start=\"2439\" data-end=\"2475\"\u003ePrevent dangerous pressure buildup\u003c\/li\u003e\n\u003cli data-section-id=\"1qv8zyv\" data-start=\"2476\" data-end=\"2524\"\u003eProtect pumps, hoses, spray guns, and fittings\u003c\/li\u003e\n\u003cli data-section-id=\"1naeu20\" data-start=\"2525\" data-end=\"2556\"\u003eImprove equipment reliability\u003c\/li\u003e\n\u003cli data-section-id=\"xpvmsf\" data-start=\"2557\" data-end=\"2593\"\u003eExtend overall system service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2595\" data-end=\"2707\"\u003eWhen the trigger gun is closed, water is redirected through the bypass circuit until cleaning operations resume.\u003c\/p\u003e\n\u003chr data-start=\"2709\" data-end=\"2712\"\u003e\n\u003ch2 data-section-id=\"5wur7n\" data-start=\"2714\" data-end=\"2753\"\u003eHigh-Pressure Performance Advantages\u003c\/h2\u003e\n\u003cp data-start=\"2755\" data-end=\"2828\"\u003eWith a maximum pressure rating of \u003cstrong data-start=\"2789\" data-end=\"2802\"\u003e5,650 PSI\u003c\/strong\u003e, this valve is ideal for:\u003c\/p\u003e\n\u003cul data-start=\"2830\" data-end=\"3059\"\u003e\n\u003cli data-section-id=\"qfhs26\" data-start=\"2830\" data-end=\"2870\"\u003eHeavy-duty industrial cleaning systems\u003c\/li\u003e\n\u003cli data-section-id=\"22dp4k\" data-start=\"2871\" data-end=\"2913\"\u003eHigh-pressure surface cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1bd7ek3\" data-start=\"2914\" data-end=\"2948\"\u003eCommercial pressure washing rigs\u003c\/li\u003e\n\u003cli data-section-id=\"1rartuu\" data-start=\"2949\" data-end=\"2984\"\u003eProfessional contractor equipment\u003c\/li\u003e\n\u003cli data-section-id=\"3rigoq\" data-start=\"2985\" data-end=\"3059\"\u003eSpecialized cleaning applications requiring elevated operating pressures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3061\" data-end=\"3162\"\u003eIts robust design helps maintain stable system performance even under demanding operating conditions.\u003c\/p\u003e\n\u003chr data-start=\"3164\" data-end=\"3167\"\u003e\n\u003ch2 data-section-id=\"vx2wyp\" data-start=\"3169\" data-end=\"3191\"\u003eCommon Applications\u003c\/h2\u003e\n\u003ch3 data-section-id=\"cl0b4i\" data-start=\"3193\" data-end=\"3224\"\u003eIndustrial Cleaning Systems\u003c\/h3\u003e\n\u003cp data-start=\"3226\" data-end=\"3236\"\u003eIdeal for:\u003c\/p\u003e\n\u003cul data-start=\"3238\" data-end=\"3357\"\u003e\n\u003cli data-section-id=\"1i0u86j\" data-start=\"3238\" data-end=\"3264\"\u003eManufacturing facilities\u003c\/li\u003e\n\u003cli data-section-id=\"1w53sob\" data-start=\"3265\" data-end=\"3295\"\u003eIndustrial wash-down systems\u003c\/li\u003e\n\u003cli data-section-id=\"784521\" data-start=\"3296\" data-end=\"3330\"\u003eEquipment maintenance operations\u003c\/li\u003e\n\u003cli data-section-id=\"1pu1k80\" data-start=\"3331\" data-end=\"3357\"\u003eHeavy machinery cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1m7fp76\" data-start=\"3359\" data-end=\"3390\"\u003eCommercial Pressure Washing\u003c\/h3\u003e\n\u003cul data-start=\"3392\" data-end=\"3502\"\u003e\n\u003cli data-section-id=\"17aqqxb\" data-start=\"3392\" data-end=\"3423\"\u003eProfessional pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"sjf9mw\" data-start=\"3424\" data-end=\"3455\"\u003eContractor cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1hb3h7x\" data-start=\"3456\" data-end=\"3479\"\u003eFleet washing systems\u003c\/li\u003e\n\u003cli data-section-id=\"cmzgkj\" data-start=\"3480\" data-end=\"3502\"\u003eMobile wash trailers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1lp2dzu\" data-start=\"3504\" data-end=\"3546\"\u003eSpecialized High-Pressure Applications\u003c\/h3\u003e\n\u003cul data-start=\"3548\" data-end=\"3650\"\u003e\n\u003cli data-section-id=\"9goouc\" data-start=\"3548\" data-end=\"3569\"\u003eSurface preparation\u003c\/li\u003e\n\u003cli data-section-id=\"vr04cs\" data-start=\"3570\" data-end=\"3593\"\u003eIndustrial degreasing\u003c\/li\u003e\n\u003cli data-section-id=\"13azh1u\" data-start=\"3594\" data-end=\"3617\"\u003eEquipment restoration\u003c\/li\u003e\n\u003cli data-section-id=\"967vy1\" data-start=\"3618\" data-end=\"3650\"\u003eHeavy-duty cleaning operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3652\" data-end=\"3655\"\u003e\n\u003ch2 data-section-id=\"ctfpuh\" data-start=\"3657\" data-end=\"3680\"\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cul data-start=\"3682\" data-end=\"3898\"\u003e\n\u003cli data-section-id=\"1bl7wox\" data-start=\"3682\" data-end=\"3712\"\u003eReliable pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"705ixp\" data-start=\"3713\" data-end=\"3739\"\u003eEnhanced pump protection\u003c\/li\u003e\n\u003cli data-section-id=\"19klfdu\" data-start=\"3740\" data-end=\"3764\"\u003eReduced component wear\u003c\/li\u003e\n\u003cli data-section-id=\"jtaebh\" data-start=\"3765\" data-end=\"3792\"\u003eStable operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"vi7rj8\" data-start=\"3793\" data-end=\"3821\"\u003eImproved system efficiency\u003c\/li\u003e\n\u003cli data-section-id=\"1wdzf4p\" data-start=\"3822\" data-end=\"3841\"\u003eLong service life\u003c\/li\u003e\n\u003cli data-section-id=\"ha6e2j\" data-start=\"3842\" data-end=\"3865\"\u003eHeavy-duty durability\u003c\/li\u003e\n\u003cli data-section-id=\"1r7dt0j\" data-start=\"3866\" data-end=\"3898\"\u003eProfessional-grade performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3900\" data-end=\"3903\"\u003e\n\u003ch2 data-section-id=\"x2tt67\" data-start=\"3905\" data-end=\"3949\"\u003eSigns an Unloader Valve Needs Replacement\u003c\/h2\u003e\n\u003cp data-start=\"3951\" data-end=\"3986\"\u003eReplace the unloader if you notice:\u003c\/p\u003e\n\u003cul data-start=\"3988\" data-end=\"4225\"\u003e\n\u003cli data-section-id=\"8nitf4\" data-start=\"3988\" data-end=\"4022\"\u003ePressure fluctuations or surging\u003c\/li\u003e\n\u003cli data-section-id=\"op63ib\" data-start=\"4023\" data-end=\"4054\"\u003eDifficulty adjusting pressure\u003c\/li\u003e\n\u003cli data-section-id=\"10r4gdm\" data-start=\"4055\" data-end=\"4090\"\u003eWater leakage from the valve body\u003c\/li\u003e\n\u003cli data-section-id=\"uz2anl\" data-start=\"4091\" data-end=\"4114\"\u003eExcessive bypass flow\u003c\/li\u003e\n\u003cli data-section-id=\"1o6xw0i\" data-start=\"4115\" data-end=\"4150\"\u003eInconsistent cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"42aigf\" data-start=\"4151\" data-end=\"4172\"\u003ePump cycling issues\u003c\/li\u003e\n\u003cli data-section-id=\"1knavrr\" data-start=\"4173\" data-end=\"4199\"\u003eWorn internal components\u003c\/li\u003e\n\u003cli data-section-id=\"12cjody\" data-start=\"4200\" data-end=\"4225\"\u003eReduced pressure output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4227\" data-end=\"4230\"\u003e\n\u003ch2 data-section-id=\"16dprsq\" data-start=\"4232\" data-end=\"4253\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003col data-start=\"4255\" data-end=\"4665\"\u003e\n\u003cli data-section-id=\"1xqzeet\" data-start=\"4255\" data-end=\"4316\"\u003eShut down the pressure washer and relieve system pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"6rbdae\" data-start=\"4317\" data-end=\"4384\"\u003eVerify compatibility with pump flow and pressure specifications.\u003c\/li\u003e\n\u003cli data-section-id=\"11dy9el\" data-start=\"4385\" data-end=\"4435\"\u003eInstall using the proper BSP-threaded fittings.\u003c\/li\u003e\n\u003cli data-section-id=\"3vcll9\" data-start=\"4436\" data-end=\"4502\"\u003eApply thread sealant approved for pressure washer applications.\u003c\/li\u003e\n\u003cli data-section-id=\"l15tps\" data-start=\"4503\" data-end=\"4568\"\u003eAdjust operating pressure according to equipment requirements.\u003c\/li\u003e\n\u003cli data-section-id=\"uc45wx\" data-start=\"4569\" data-end=\"4603\"\u003eVerify proper bypass operation.\u003c\/li\u003e\n\u003cli data-section-id=\"1r0eomv\" data-start=\"4604\" data-end=\"4665\"\u003eTest the system for leaks and correct pressure regulation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-start=\"4667\" data-end=\"4816\"\u003e\u003cstrong data-start=\"4667\" data-end=\"4681\"\u003eImportant:\u003c\/strong\u003e Ensure all hoses, guns, fittings, and pumps connected to the system are rated for the operating pressure and flow of the installation.\u003c\/p\u003e\n\u003chr data-start=\"4818\" data-end=\"4821\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"4823\" data-end=\"4853\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"4855\" data-end=\"5136\"\u003e\n\u003cli data-section-id=\"8e7fsu\" data-start=\"4855\" data-end=\"4894\"\u003eInspect regularly for leaks and wear.\u003c\/li\u003e\n\u003cli data-section-id=\"1bk99f5\" data-start=\"4895\" data-end=\"4949\"\u003eVerify pressure settings during routine maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"1yanzs2\" data-start=\"4950\" data-end=\"4991\"\u003eMaintain proper inlet water filtration.\u003c\/li\u003e\n\u003cli data-section-id=\"1q0brl4\" data-start=\"4992\" data-end=\"5030\"\u003eCheck bypass operation periodically.\u003c\/li\u003e\n\u003cli data-section-id=\"16ap0lr\" data-start=\"5031\" data-end=\"5086\"\u003eReplace worn seals and internal components as needed.\u003c\/li\u003e\n\u003cli data-section-id=\"1n6ugie\" data-start=\"5087\" data-end=\"5136\"\u003eFollow PA manufacturer service recommendations.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PA","offers":[{"title":"Default Title","offer_id":53428792590699,"sku":null,"price":148.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/4906Unloader_20382dff-30f6-4eb9-b851-587be78dcd0d.webp?v=1782488269","url":"https:\/\/generalsprayers.com\/products\/pa-vb350s-yu5075ks-pressure-washer-unloader-valve-10-gpm-5650-psi-oem-replacement-part","provider":"GeneralSprayers","version":"1.0","type":"link"}