{"product_id":"pa-vb7k-pressure-washer-unloader-valve-8-0-gpm-3650-psi-oem-replacement-part","title":"PA VB7K Pressure Washer Unloader Valve 8.0 GPM 3650 PSI – OEM Replacement Part","description":"\u003cp data-start=\"0\" data-end=\"157\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 3594\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 Washer Regulators\u003cbr data-start=\"106\" data-end=\"109\"\u003e\u003cstrong data-start=\"109\" data-end=\"118\"\u003eType:\u003c\/strong\u003e PA VB7K Pressure Washer Unloader Valve\u003c\/p\u003e\n\u003chr data-start=\"159\" data-end=\"162\"\u003e\n\u003cp data-start=\"252\" data-end=\"644\"\u003eThe \u003cstrong data-start=\"256\" data-end=\"311\"\u003ePA VB7K Pressure Washer Unloader Valve (Part #3594)\u003c\/strong\u003e is a genuine OEM replacement unloader designed to provide dependable pressure regulation and pump protection for commercial and industrial pressure washer systems. Manufactured by \u003cstrong data-start=\"492\" data-end=\"509\"\u003ePA (P.A. SpA)\u003c\/strong\u003e, this heavy-duty pressure-actuated unloader is rated for up to \u003cstrong data-start=\"573\" data-end=\"586\"\u003e3,650 PSI\u003c\/strong\u003e, \u003cstrong data-start=\"588\" data-end=\"599\"\u003e8.0 GPM\u003c\/strong\u003e, and operating temperatures up to \u003cstrong data-start=\"634\" data-end=\"643\"\u003e195°F\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"1182\" data-end=\"1185\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1187\" data-end=\"1213\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1215\" data-end=\"1751\"\u003e\n\u003cli data-section-id=\"snkwq3\" data-start=\"1215\" data-end=\"1269\"\u003eGenuine PA (P.A. SpA) OEM replacement unloader valve\u003c\/li\u003e\n\u003cli data-section-id=\"1alras6\" data-start=\"1270\" data-end=\"1293\"\u003eRated up to 3,650 PSI\u003c\/li\u003e\n\u003cli data-section-id=\"zovk51\" data-start=\"1294\" data-end=\"1329\"\u003eSupports flow rates up to 8.0 GPM\u003c\/li\u003e\n\u003cli data-section-id=\"7b3l7s\" data-start=\"1330\" data-end=\"1366\"\u003ePressure-actuated bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"104jwhr\" data-start=\"1367\" data-end=\"1434\"\u003eAutomatically diverts water flow when the trigger gun is released\u003c\/li\u003e\n\u003cli data-section-id=\"3oc7ks\" data-start=\"1435\" data-end=\"1499\"\u003eHelps protect pumps and system components from pressure spikes\u003c\/li\u003e\n\u003cli data-section-id=\"7dzq54\" data-start=\"1500\" data-end=\"1539\"\u003eDurable commercial-grade construction\u003c\/li\u003e\n\u003cli data-section-id=\"3u46tj\" data-start=\"1540\" data-end=\"1590\"\u003eSuitable for hot and cold water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"czx11q\" data-start=\"1591\" data-end=\"1620\"\u003eCompact and reliable design\u003c\/li\u003e\n\u003cli data-section-id=\"18ot7jt\" data-start=\"1621\" data-end=\"1653\"\u003eConsistent pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"41vzkx\" data-start=\"1654\" data-end=\"1694\"\u003eEasy integration into existing systems\u003c\/li\u003e\n\u003cli data-section-id=\"zty4uj\" data-start=\"1695\" data-end=\"1751\"\u003eLong service life under demanding operating conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1753\" data-end=\"1756\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1758\" data-end=\"1785\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1787\" data-end=\"1808\"\u003e\u003cstrong data-start=\"1787\" data-end=\"1803\"\u003ePart Number:\u003c\/strong\u003e 3594\u003c\/p\u003e\n\u003cp data-start=\"1810\" data-end=\"1841\"\u003e\u003cstrong data-start=\"1810\" data-end=\"1827\"\u003eManufacturer:\u003c\/strong\u003e PA (P.A. SpA)\u003c\/p\u003e\n\u003cp data-start=\"1843\" data-end=\"1858\"\u003e\u003cstrong data-start=\"1843\" data-end=\"1853\"\u003eModel:\u003c\/strong\u003e VB7K\u003c\/p\u003e\n\u003cp data-start=\"1860\" data-end=\"1908\"\u003e\u003cstrong data-start=\"1860\" data-end=\"1877\"\u003eProduct Type:\u003c\/strong\u003e Pressure Washer Unloader Valve\u003c\/p\u003e\n\u003cp data-start=\"1910\" data-end=\"1941\"\u003e\u003cstrong data-start=\"1910\" data-end=\"1931\"\u003eMaximum Pressure:\u003c\/strong\u003e 3,650 PSI\u003c\/p\u003e\n\u003cp data-start=\"1943\" data-end=\"1973\"\u003e\u003cstrong data-start=\"1943\" data-end=\"1965\"\u003eMaximum Flow Rate:\u003c\/strong\u003e 8.0 GPM\u003c\/p\u003e\n\u003cp data-start=\"1975\" data-end=\"2005\"\u003e\u003cstrong data-start=\"1975\" data-end=\"1999\"\u003eMaximum Temperature:\u003c\/strong\u003e 195°F\u003c\/p\u003e\n\u003cp data-start=\"2007\" data-end=\"2037\"\u003e\u003cstrong data-start=\"2007\" data-end=\"2028\"\u003eInlet Connection:\u003c\/strong\u003e 3\/8\" MPT\u003c\/p\u003e\n\u003cp data-start=\"2039\" data-end=\"2070\"\u003e\u003cstrong data-start=\"2039\" data-end=\"2061\"\u003eOutlet Connection:\u003c\/strong\u003e 3\/8\" MPT\u003c\/p\u003e\n\u003cp data-start=\"2072\" data-end=\"2103\"\u003e\u003cstrong data-start=\"2072\" data-end=\"2094\"\u003eBypass Connection:\u003c\/strong\u003e 3\/8\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2105\" data-end=\"2141\"\u003e\u003cstrong data-start=\"2105\" data-end=\"2123\"\u003eUnloader Type:\u003c\/strong\u003e Pressure Actuated\u003c\/p\u003e\n\u003cp data-start=\"2143\" data-end=\"2167\"\u003e\u003cstrong data-start=\"2143\" data-end=\"2163\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2169\" data-end=\"2172\"\u003e\n\u003ch2 data-section-id=\"1kehdxb\" data-start=\"2174\" data-end=\"2204\"\u003eWhat an Unloader Valve Does\u003c\/h2\u003e\n\u003cp data-start=\"2206\" data-end=\"2230\"\u003eThe VB7K is designed to:\u003c\/p\u003e\n\u003cul data-start=\"2232\" data-end=\"2481\"\u003e\n\u003cli data-section-id=\"1tauqdo\" data-start=\"2232\" data-end=\"2268\"\u003eRegulate system operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1gzaa3t\" data-start=\"2269\" data-end=\"2321\"\u003eDivert water flow when the trigger gun is released\u003c\/li\u003e\n\u003cli data-section-id=\"1ui229q\" data-start=\"2322\" data-end=\"2357\"\u003ePrevent damaging pressure buildup\u003c\/li\u003e\n\u003cli data-section-id=\"1qv8zyv\" data-start=\"2358\" data-end=\"2406\"\u003eProtect pumps, hoses, spray guns, and fittings\u003c\/li\u003e\n\u003cli data-section-id=\"fhdcyw\" data-start=\"2407\" data-end=\"2443\"\u003eImprove overall system reliability\u003c\/li\u003e\n\u003cli data-section-id=\"1v5u496\" data-start=\"2444\" data-end=\"2481\"\u003eExtend pressure washer service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2483\" data-end=\"2588\"\u003eWhen spraying stops, water is automatically redirected through the bypass circuit until cleaning resumes.\u003c\/p\u003e\n\u003chr data-start=\"2590\" data-end=\"2593\"\u003e\n\u003ch2 data-section-id=\"vx2wyp\" data-start=\"2595\" data-end=\"2617\"\u003eCommon Applications\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1m7fp76\" data-start=\"2619\" data-end=\"2650\"\u003eCommercial Pressure Washing\u003c\/h3\u003e\n\u003cp data-start=\"2652\" data-end=\"2662\"\u003eIdeal for:\u003c\/p\u003e\n\u003cul data-start=\"2664\" data-end=\"2804\"\u003e\n\u003cli data-section-id=\"17aqqxb\" data-start=\"2664\" data-end=\"2695\"\u003eProfessional pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"i17fze\" data-start=\"2696\" data-end=\"2714\"\u003eMobile wash rigs\u003c\/li\u003e\n\u003cli data-section-id=\"1mv9afl\" data-start=\"2715\" data-end=\"2740\"\u003eFleet washing equipment\u003c\/li\u003e\n\u003cli data-section-id=\"fbl3xw\" data-start=\"2741\" data-end=\"2770\"\u003eContractor cleaning systems\u003c\/li\u003e\n\u003cli data-section-id=\"vvbnzo\" data-start=\"2771\" data-end=\"2804\"\u003eProperty maintenance operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"3xqko4\" data-start=\"2806\" data-end=\"2829\"\u003eIndustrial Cleaning\u003c\/h3\u003e\n\u003cul data-start=\"2831\" data-end=\"2981\"\u003e\n\u003cli data-section-id=\"dt6p21\" data-start=\"2831\" data-end=\"2861\"\u003eEquipment wash-down stations\u003c\/li\u003e\n\u003cli data-section-id=\"1i0u86j\" data-start=\"2862\" data-end=\"2888\"\u003eManufacturing facilities\u003c\/li\u003e\n\u003cli data-section-id=\"7a3rsy\" data-start=\"2889\" data-end=\"2920\"\u003eAgricultural cleaning systems\u003c\/li\u003e\n\u003cli data-section-id=\"5l5kua\" data-start=\"2921\" data-end=\"2946\"\u003eMaintenance departments\u003c\/li\u003e\n\u003cli data-section-id=\"1avn1hf\" data-start=\"2947\" data-end=\"2981\"\u003eIndustrial cleaning applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1dywfhw\" data-start=\"2983\" data-end=\"3011\"\u003eHot \u0026amp; Cold Water Systems\u003c\/h3\u003e\n\u003cp data-start=\"3013\" data-end=\"3026\"\u003eSuitable for:\u003c\/p\u003e\n\u003cul data-start=\"3028\" data-end=\"3172\"\u003e\n\u003cli data-section-id=\"g7mqf6\" data-start=\"3028\" data-end=\"3056\"\u003eHot water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1l5zndh\" data-start=\"3057\" data-end=\"3086\"\u003eCold water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"17gf3sa\" data-start=\"3087\" data-end=\"3109\"\u003eSkid-mounted systems\u003c\/li\u003e\n\u003cli data-section-id=\"1oz07on\" data-start=\"3110\" data-end=\"3140\"\u003eTrailer-mounted wash systems\u003c\/li\u003e\n\u003cli data-section-id=\"meedk1\" data-start=\"3141\" data-end=\"3172\"\u003eCustom pressure washer builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3174\" data-end=\"3177\"\u003e\n\u003ch2 data-section-id=\"ctfpuh\" data-start=\"3179\" data-end=\"3202\"\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cul data-start=\"3204\" data-end=\"3440\"\u003e\n\u003cli data-section-id=\"1bl7wox\" data-start=\"3204\" data-end=\"3234\"\u003eReliable pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"1bb2u3x\" data-start=\"3235\" data-end=\"3261\"\u003eImproved pump protection\u003c\/li\u003e\n\u003cli data-section-id=\"19klfdu\" data-start=\"3262\" data-end=\"3286\"\u003eReduced component wear\u003c\/li\u003e\n\u003cli data-section-id=\"jtaebh\" data-start=\"3287\" data-end=\"3314\"\u003eStable operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1gpagnp\" data-start=\"3315\" data-end=\"3348\"\u003eConsistent cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"1u45z1c\" data-start=\"3349\" data-end=\"3382\"\u003eDurable commercial construction\u003c\/li\u003e\n\u003cli data-section-id=\"1kjg8fj\" data-start=\"3383\" data-end=\"3412\"\u003eExtended equipment lifespan\u003c\/li\u003e\n\u003cli data-section-id=\"1fswne1\" data-start=\"3413\" data-end=\"3440\"\u003eReduced maintenance costs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3442\" data-end=\"3445\"\u003e\n\u003ch2 data-section-id=\"x2tt67\" data-start=\"3447\" data-end=\"3491\"\u003eSigns an Unloader Valve Needs Replacement\u003c\/h2\u003e\n\u003cp data-start=\"3493\" data-end=\"3528\"\u003eReplace the unloader if you notice:\u003c\/p\u003e\n\u003cul data-start=\"3530\" data-end=\"3753\"\u003e\n\u003cli data-section-id=\"zta6im\" data-start=\"3530\" data-end=\"3553\"\u003ePressure fluctuations\u003c\/li\u003e\n\u003cli data-section-id=\"1g7kb8v\" data-start=\"3554\" data-end=\"3586\"\u003eWater leakage around the valve\u003c\/li\u003e\n\u003cli data-section-id=\"op63ib\" data-start=\"3587\" data-end=\"3618\"\u003eDifficulty adjusting pressure\u003c\/li\u003e\n\u003cli data-section-id=\"uz2anl\" data-start=\"3619\" data-end=\"3642\"\u003eExcessive bypass flow\u003c\/li\u003e\n\u003cli data-section-id=\"1n1a9ox\" data-start=\"3643\" data-end=\"3673\"\u003eReduced cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"42aigf\" data-start=\"3674\" data-end=\"3695\"\u003ePump cycling issues\u003c\/li\u003e\n\u003cli data-section-id=\"1lcacgl\" data-start=\"3696\" data-end=\"3726\"\u003eInconsistent pressure output\u003c\/li\u003e\n\u003cli data-section-id=\"1knavrr\" data-start=\"3727\" data-end=\"3753\"\u003eWorn internal components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3755\" data-end=\"3758\"\u003e\n\u003ch2 data-section-id=\"16dprsq\" data-start=\"3760\" data-end=\"3781\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003col data-start=\"3783\" data-end=\"4213\"\u003e\n\u003cli data-section-id=\"v1qt1w\" data-start=\"3783\" data-end=\"3848\"\u003eShut down the pressure washer and relieve all system pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"olovz0\" data-start=\"3849\" data-end=\"3923\"\u003eVerify compatibility with your system's pressure and flow requirements.\u003c\/li\u003e\n\u003cli data-section-id=\"103tomg\" data-start=\"3924\" data-end=\"3973\"\u003eInstall using the proper threaded connections.\u003c\/li\u003e\n\u003cli data-section-id=\"1lhhw4v\" data-start=\"3974\" data-end=\"4013\"\u003eApply thread sealant where required.\u003c\/li\u003e\n\u003cli data-section-id=\"1bifqw5\" data-start=\"4014\" data-end=\"4077\"\u003eAdjust operating pressure using a calibrated pressure gauge.\u003c\/li\u003e\n\u003cli data-section-id=\"cfjolo\" data-start=\"4078\" data-end=\"4135\"\u003eTest the system for leaks and proper bypass operation.\u003c\/li\u003e\n\u003cli data-section-id=\"1c2nldb\" data-start=\"4136\" data-end=\"4213\"\u003eConfirm stable pressure performance before returning equipment to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-start=\"4215\" data-end=\"4347\"\u003e\u003cstrong data-start=\"4215\" data-end=\"4229\"\u003eImportant:\u003c\/strong\u003e Always ensure pumps, hoses, spray guns, and fittings are properly rated for the system's operating pressure and flow.\u003c\/p\u003e\n\u003chr data-start=\"4349\" data-end=\"4352\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"4354\" data-end=\"4384\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"4386\" data-end=\"4666\"\u003e\n\u003cli data-section-id=\"8e7fsu\" data-start=\"4386\" data-end=\"4425\"\u003eInspect regularly for leaks and wear.\u003c\/li\u003e\n\u003cli data-section-id=\"1bk99f5\" data-start=\"4426\" data-end=\"4480\"\u003eVerify pressure settings during routine maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"1d9n57l\" data-start=\"4481\" data-end=\"4523\"\u003eMaintain clean water filtration systems.\u003c\/li\u003e\n\u003cli data-section-id=\"1uztswy\" data-start=\"4524\" data-end=\"4564\"\u003eMonitor bypass operation periodically.\u003c\/li\u003e\n\u003cli data-section-id=\"6nxwyt\" data-start=\"4565\" data-end=\"4625\"\u003eReplace worn seals and internal components when necessary.\u003c\/li\u003e\n\u003cli data-section-id=\"1cwppa9\" data-start=\"4626\" data-end=\"4666\"\u003eFollow PA maintenance recommendations.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PA","offers":[{"title":"Default Title","offer_id":53429159919979,"sku":null,"price":80.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/PAVB7K.webp?v=1782508529","url":"https:\/\/generalsprayers.com\/products\/pa-vb7k-pressure-washer-unloader-valve-8-0-gpm-3650-psi-oem-replacement-part","provider":"GeneralSprayers","version":"1.0","type":"link"}