{"product_id":"vrt3-310ez-unloader-valve-4500-psi-with-thermal-relief-valve-injector-oem-replacement-part","title":"VRT3-310EZ Unloader Valve 4500 PSI with Thermal Relief Valve \u0026 Injector – OEM Replacement Part","description":"\u003cp data-start=\"0\" data-end=\"196\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 5058\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 Actuated Unloader Valves\u003cbr data-start=\"113\" data-end=\"116\"\u003e\u003cstrong data-start=\"116\" data-end=\"125\"\u003eType:\u003c\/strong\u003e Mecline VRT3-310EZ Unloader Valve with Thermal Relief Valve \u0026amp; Injector\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"198\" data-end=\"201\"\u003e\n\u003cp data-start=\"307\" data-end=\"805\"\u003eThe \u003cstrong data-start=\"311\" data-end=\"361\"\u003eMecline VRT3-310EZ Unloader Valve (Part #5058)\u003c\/strong\u003e is a premium OEM replacement pressure-actuated unloader engineered for professional pressure washer systems requiring high-pressure performance, integrated chemical injection, and enhanced thermal protection. Rated for up to \u003cstrong data-start=\"587\" data-end=\"599\"\u003e10.5 GPM\u003c\/strong\u003e, \u003cstrong data-start=\"601\" data-end=\"614\"\u003e4,500 PSI\u003c\/strong\u003e, and \u003cstrong data-start=\"620\" data-end=\"629\"\u003e194°F\u003c\/strong\u003e, this heavy-duty unloader is designed to provide reliable pressure regulation while protecting pumps and system components in demanding commercial and industrial applications.\u003c\/p\u003e\n\u003chr data-start=\"1483\" data-end=\"1486\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1488\" data-end=\"1514\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1516\" data-end=\"2003\"\u003e\n\u003cli data-section-id=\"1i3ncjx\" data-start=\"1516\" data-end=\"1564\"\u003eGenuine Mecline OEM replacement unloader valve\u003c\/li\u003e\n\u003cli data-section-id=\"7b3l7s\" data-start=\"1565\" data-end=\"1601\"\u003ePressure-actuated bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"nqg98t\" data-start=\"1602\" data-end=\"1635\"\u003eIntegrated thermal relief valve\u003c\/li\u003e\n\u003cli data-section-id=\"1d5yqrz\" data-start=\"1636\" data-end=\"1671\"\u003eBuilt-in 2.1 mm chemical injector\u003c\/li\u003e\n\u003cli data-section-id=\"rv5o23\" data-start=\"1672\" data-end=\"1698\"\u003eRated for up to 10.5 GPM\u003c\/li\u003e\n\u003cli data-section-id=\"1nxv6ek\" data-start=\"1699\" data-end=\"1737\"\u003eMaximum pressure rating of 4,500 PSI\u003c\/li\u003e\n\u003cli data-section-id=\"5atig\" data-start=\"1738\" data-end=\"1780\"\u003eHigh-pressure black spring configuration\u003c\/li\u003e\n\u003cli data-section-id=\"7k8tb3\" data-start=\"1781\" data-end=\"1818\"\u003eProtects pumps from pressure spikes\u003c\/li\u003e\n\u003cli data-section-id=\"zgv90z\" data-start=\"1819\" data-end=\"1871\"\u003eHelps prevent heat buildup during bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"17cdfv7\" data-start=\"1872\" data-end=\"1906\"\u003eSimplifies detergent application\u003c\/li\u003e\n\u003cli data-section-id=\"f2vfgx\" data-start=\"1907\" data-end=\"1945\"\u003eDurable commercial-duty construction\u003c\/li\u003e\n\u003cli data-section-id=\"1hcgyle\" data-start=\"1946\" data-end=\"2003\"\u003eSuitable for hot and cold water pressure washer systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2005\" data-end=\"2008\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"2010\" data-end=\"2037\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"2039\" data-end=\"2060\"\u003e\u003cstrong data-start=\"2039\" data-end=\"2055\"\u003ePart Number:\u003c\/strong\u003e 5058\u003c\/p\u003e\n\u003cp data-start=\"2062\" data-end=\"2087\"\u003e\u003cstrong data-start=\"2062\" data-end=\"2079\"\u003eManufacturer:\u003c\/strong\u003e Mecline\u003c\/p\u003e\n\u003cp data-start=\"2089\" data-end=\"2110\"\u003e\u003cstrong data-start=\"2089\" data-end=\"2099\"\u003eModel:\u003c\/strong\u003e VRT3-310EZ\u003c\/p\u003e\n\u003cp data-start=\"2112\" data-end=\"2162\"\u003e\u003cstrong data-start=\"2112\" data-end=\"2129\"\u003eProduct Type:\u003c\/strong\u003e Pressure Actuated Unloader Valve\u003c\/p\u003e\n\u003cp data-start=\"2164\" data-end=\"2195\"\u003e\u003cstrong data-start=\"2164\" data-end=\"2186\"\u003eMaximum Flow Rate:\u003c\/strong\u003e 10.5 GPM\u003c\/p\u003e\n\u003cp data-start=\"2197\" data-end=\"2228\"\u003e\u003cstrong data-start=\"2197\" data-end=\"2218\"\u003eMaximum Pressure:\u003c\/strong\u003e 4,500 PSI\u003c\/p\u003e\n\u003cp data-start=\"2230\" data-end=\"2260\"\u003e\u003cstrong data-start=\"2230\" data-end=\"2254\"\u003eMaximum Temperature:\u003c\/strong\u003e 194°F\u003c\/p\u003e\n\u003cp data-start=\"2262\" data-end=\"2285\"\u003e\u003cstrong data-start=\"2262\" data-end=\"2279\"\u003eSpring Color:\u003c\/strong\u003e Black\u003c\/p\u003e\n\u003cp data-start=\"2287\" data-end=\"2312\"\u003e\u003cstrong data-start=\"2287\" data-end=\"2305\"\u003eInjector Size:\u003c\/strong\u003e 2.1 mm\u003c\/p\u003e\n\u003cp data-start=\"2314\" data-end=\"2350\"\u003e\u003cstrong data-start=\"2314\" data-end=\"2336\"\u003eInlet Connections:\u003c\/strong\u003e Dual 3\/8\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2352\" data-end=\"2389\"\u003e\u003cstrong data-start=\"2352\" data-end=\"2375\"\u003eBypass Connections:\u003c\/strong\u003e Dual 3\/8\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2391\" data-end=\"2422\"\u003e\u003cstrong data-start=\"2391\" data-end=\"2413\"\u003eOutlet Connection:\u003c\/strong\u003e 3\/8\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2424\" data-end=\"2460\"\u003e\u003cstrong data-start=\"2424\" data-end=\"2449\"\u003eThermal Relief Valve:\u003c\/strong\u003e Integrated\u003c\/p\u003e\n\u003cp data-start=\"2462\" data-end=\"2495\"\u003e\u003cstrong data-start=\"2462\" data-end=\"2484\"\u003eChemical Injector:\u003c\/strong\u003e Integrated\u003c\/p\u003e\n\u003cp data-start=\"2497\" data-end=\"2521\"\u003e\u003cstrong data-start=\"2497\" data-end=\"2517\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2523\" data-end=\"2526\"\u003e\n\u003ch2 data-section-id=\"13udecr\" data-start=\"2528\" data-end=\"2567\"\u003eIntegrated Thermal Relief Protection\u003c\/h2\u003e\n\u003cp data-start=\"2569\" data-end=\"2647\"\u003eThe built-in thermal relief valve helps protect the pressure washer system by:\u003c\/p\u003e\n\u003cul data-start=\"2649\" data-end=\"2832\"\u003e\n\u003cli data-section-id=\"mypaks\" data-start=\"2649\" data-end=\"2684\"\u003eReleasing overheated bypass water\u003c\/li\u003e\n\u003cli data-section-id=\"t6byy5\" data-start=\"2685\" data-end=\"2719\"\u003eReducing the risk of pump damage\u003c\/li\u003e\n\u003cli data-section-id=\"fd0yor\" data-start=\"2720\" data-end=\"2762\"\u003eProtecting seals and internal components\u003c\/li\u003e\n\u003cli data-section-id=\"m63aa6\" data-start=\"2763\" data-end=\"2793\"\u003eExtending equipment lifespan\u003c\/li\u003e\n\u003cli data-section-id=\"xbkutp\" data-start=\"2794\" data-end=\"2832\"\u003eImproving overall system reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2834\" data-end=\"2930\"\u003eThis feature is especially valuable when equipment operates in bypass mode for extended periods.\u003c\/p\u003e\n\u003chr data-start=\"2932\" data-end=\"2935\"\u003e\n\u003ch2 data-section-id=\"sz45u7\" data-start=\"2937\" data-end=\"2966\"\u003eBuilt-In Chemical Injector\u003c\/h2\u003e\n\u003cp data-start=\"2968\" data-end=\"3012\"\u003eThe integrated \u003cstrong data-start=\"2983\" data-end=\"3002\"\u003e2.1 mm injector\u003c\/strong\u003e provides:\u003c\/p\u003e\n\u003cul data-start=\"3014\" data-end=\"3201\"\u003e\n\u003cli data-section-id=\"16zky9y\" data-start=\"3014\" data-end=\"3048\"\u003eDownstream detergent application\u003c\/li\u003e\n\u003cli data-section-id=\"1dea9hj\" data-start=\"3049\" data-end=\"3077\"\u003eSimplified system plumbing\u003c\/li\u003e\n\u003cli data-section-id=\"bugqtc\" data-start=\"3078\" data-end=\"3103\"\u003eReduced component count\u003c\/li\u003e\n\u003cli data-section-id=\"1gfau7h\" data-start=\"3104\" data-end=\"3141\"\u003eEfficient chemical draw performance\u003c\/li\u003e\n\u003cli data-section-id=\"ayojjo\" data-start=\"3142\" data-end=\"3201\"\u003eEasier installation compared to separate injector systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3203\" data-end=\"3283\"\u003eCompatible with many pressure washing detergents, soaps, and cleaning chemicals.\u003c\/p\u003e\n\u003chr data-start=\"3285\" data-end=\"3288\"\u003e\n\u003ch2 data-section-id=\"1kehdxb\" data-start=\"3290\" data-end=\"3320\"\u003eWhat an Unloader Valve Does\u003c\/h2\u003e\n\u003cp data-start=\"3322\" data-end=\"3351\"\u003eThe VRT3-310EZ automatically:\u003c\/p\u003e\n\u003cul data-start=\"3353\" data-end=\"3563\"\u003e\n\u003cli data-section-id=\"1kamoqi\" data-start=\"3353\" data-end=\"3383\"\u003eRegulates operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"11c2dx2\" data-start=\"3384\" data-end=\"3427\"\u003eDiverts water flow during trigger release\u003c\/li\u003e\n\u003cli data-section-id=\"7k8tb3\" data-start=\"3428\" data-end=\"3465\"\u003eProtects pumps from pressure spikes\u003c\/li\u003e\n\u003cli data-section-id=\"15j1wg5\" data-start=\"3466\" data-end=\"3506\"\u003eReduces stress on hoses and spray guns\u003c\/li\u003e\n\u003cli data-section-id=\"q8fkkb\" data-start=\"3507\" data-end=\"3532\"\u003eMaintains system safety\u003c\/li\u003e\n\u003cli data-section-id=\"c9m8t2\" data-start=\"3533\" data-end=\"3563\"\u003eImproves equipment longevity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3565\" data-end=\"3665\"\u003eWhen the spray gun is closed, water is redirected through the bypass circuit until cleaning resumes.\u003c\/p\u003e\n\u003chr data-start=\"3667\" data-end=\"3670\"\u003e\n\u003ch2 data-section-id=\"vx2wyp\" data-start=\"3672\" data-end=\"3694\"\u003eCommon Applications\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1m7fp76\" data-start=\"3696\" data-end=\"3727\"\u003eCommercial Pressure Washing\u003c\/h3\u003e\n\u003cp data-start=\"3729\" data-end=\"3739\"\u003eIdeal for:\u003c\/p\u003e\n\u003cul data-start=\"3741\" data-end=\"3901\"\u003e\n\u003cli data-section-id=\"1aljaqf\" data-start=\"3741\" data-end=\"3784\"\u003eProfessional pressure washing contractors\u003c\/li\u003e\n\u003cli data-section-id=\"1mv9afl\" data-start=\"3785\" data-end=\"3810\"\u003eFleet washing equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1809ei3\" data-start=\"3811\" data-end=\"3837\"\u003eMobile cleaning trailers\u003c\/li\u003e\n\u003cli data-section-id=\"1351n5w\" data-start=\"3838\" data-end=\"3868\"\u003eProperty maintenance systems\u003c\/li\u003e\n\u003cli data-section-id=\"967vy1\" data-start=\"3869\" data-end=\"3901\"\u003eHeavy-duty cleaning operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"cl0b4i\" data-start=\"3903\" data-end=\"3934\"\u003eIndustrial Cleaning Systems\u003c\/h3\u003e\n\u003cp data-start=\"3936\" data-end=\"3949\"\u003eSuitable for:\u003c\/p\u003e\n\u003cul data-start=\"3951\" data-end=\"4110\"\u003e\n\u003cli data-section-id=\"1i0u86j\" data-start=\"3951\" data-end=\"3977\"\u003eManufacturing facilities\u003c\/li\u003e\n\u003cli data-section-id=\"dt6p21\" data-start=\"3978\" data-end=\"4008\"\u003eEquipment wash-down stations\u003c\/li\u003e\n\u003cli data-section-id=\"1xupl5g\" data-start=\"4009\" data-end=\"4044\"\u003eIndustrial maintenance operations\u003c\/li\u003e\n\u003cli data-section-id=\"7a3rsy\" data-start=\"4045\" data-end=\"4076\"\u003eAgricultural cleaning systems\u003c\/li\u003e\n\u003cli data-section-id=\"1embcwq\" data-start=\"4077\" data-end=\"4110\"\u003eConstruction equipment cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"6j53bi\" data-start=\"4112\" data-end=\"4149\"\u003eHot \u0026amp; Cold Water Pressure Washers\u003c\/h3\u003e\n\u003cp data-start=\"4151\" data-end=\"4167\"\u003eCompatible with:\u003c\/p\u003e\n\u003cul data-start=\"4169\" data-end=\"4313\"\u003e\n\u003cli data-section-id=\"g7mqf6\" data-start=\"4169\" data-end=\"4197\"\u003eHot water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1l5zndh\" data-start=\"4198\" data-end=\"4227\"\u003eCold water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"17gf3sa\" data-start=\"4228\" data-end=\"4250\"\u003eSkid-mounted systems\u003c\/li\u003e\n\u003cli data-section-id=\"111nmdm\" data-start=\"4251\" data-end=\"4276\"\u003eTrailer-mounted systems\u003c\/li\u003e\n\u003cli data-section-id=\"1quwlh6\" data-start=\"4277\" data-end=\"4313\"\u003eCustom-built pressure washer units\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4315\" data-end=\"4318\"\u003e\n\u003ch2 data-section-id=\"ctfpuh\" data-start=\"4320\" data-end=\"4343\"\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cul data-start=\"4345\" data-end=\"4602\"\u003e\n\u003cli data-section-id=\"1bl7wox\" data-start=\"4345\" data-end=\"4375\"\u003eReliable pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"1yi85vr\" data-start=\"4376\" data-end=\"4418\"\u003eHigh-pressure capability up to 4,500 PSI\u003c\/li\u003e\n\u003cli data-section-id=\"1a4u2uv\" data-start=\"4419\" data-end=\"4450\"\u003eIntegrated thermal protection\u003c\/li\u003e\n\u003cli data-section-id=\"1xhpqzg\" data-start=\"4451\" data-end=\"4482\"\u003eEfficient detergent injection\u003c\/li\u003e\n\u003cli data-section-id=\"1bb2u3x\" data-start=\"4483\" data-end=\"4509\"\u003eImproved pump protection\u003c\/li\u003e\n\u003cli data-section-id=\"19klfdu\" data-start=\"4510\" data-end=\"4534\"\u003eReduced component wear\u003c\/li\u003e\n\u003cli data-section-id=\"1gpagnp\" data-start=\"4535\" data-end=\"4568\"\u003eConsistent cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"1b855lq\" data-start=\"4569\" data-end=\"4602\"\u003eExtended equipment service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4604\" data-end=\"4607\"\u003e\n\u003ch2 data-section-id=\"x2tt67\" data-start=\"4609\" data-end=\"4653\"\u003eSigns an Unloader Valve Needs Replacement\u003c\/h2\u003e\n\u003cp data-start=\"4655\" data-end=\"4690\"\u003eReplace the unloader if you notice:\u003c\/p\u003e\n\u003cul data-start=\"4692\" data-end=\"4933\"\u003e\n\u003cli data-section-id=\"zta6im\" data-start=\"4692\" data-end=\"4715\"\u003ePressure fluctuations\u003c\/li\u003e\n\u003cli data-section-id=\"1vz4ts\" data-start=\"4716\" data-end=\"4747\"\u003eInconsistent bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"1g7kb8v\" data-start=\"4748\" data-end=\"4780\"\u003eWater leakage around the valve\u003c\/li\u003e\n\u003cli data-section-id=\"1op2blg\" data-start=\"4781\" data-end=\"4805\"\u003eChemical draw problems\u003c\/li\u003e\n\u003cli data-section-id=\"9v6536\" data-start=\"4806\" data-end=\"4830\"\u003eExcessive heat buildup\u003c\/li\u003e\n\u003cli data-section-id=\"1n1a9ox\" data-start=\"4831\" data-end=\"4861\"\u003eReduced cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"1l7xs02\" data-start=\"4862\" data-end=\"4904\"\u003eDifficulty maintaining pressure settings\u003c\/li\u003e\n\u003cli data-section-id=\"wk4w4r\" data-start=\"4905\" data-end=\"4933\"\u003eInternal wear or corrosion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4935\" data-end=\"4938\"\u003e\n\u003ch2 data-section-id=\"16dprsq\" data-start=\"4940\" data-end=\"4961\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003col data-start=\"4963\" data-end=\"5324\"\u003e\n\u003cli data-section-id=\"1xqzeet\" data-start=\"4963\" data-end=\"5024\"\u003eShut down the pressure washer and relieve system pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"1fv2joc\" data-start=\"5025\" data-end=\"5085\"\u003eVerify compatibility with flow and pressure requirements.\u003c\/li\u003e\n\u003cli data-section-id=\"l7kpdd\" data-start=\"5086\" data-end=\"5132\"\u003eInstall using the proper threaded fittings.\u003c\/li\u003e\n\u003cli data-section-id=\"10kdjyv\" data-start=\"5133\" data-end=\"5185\"\u003eConnect the chemical pickup hose to the injector.\u003c\/li\u003e\n\u003cli data-section-id=\"1ro1szf\" data-start=\"5186\" data-end=\"5218\"\u003eVerify proper bypass routing.\u003c\/li\u003e\n\u003cli data-section-id=\"gag8vy\" data-start=\"5219\" data-end=\"5268\"\u003eTest for leaks and proper pressure regulation.\u003c\/li\u003e\n\u003cli data-section-id=\"1rsl7vy\" data-start=\"5269\" data-end=\"5324\"\u003eConfirm thermal relief valve and injector operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-start=\"5326\" data-end=\"5455\"\u003e\u003cstrong data-start=\"5326\" data-end=\"5340\"\u003eImportant:\u003c\/strong\u003e Ensure all pumps, hoses, spray guns, and fittings are rated for the intended operating pressure and flow capacity.\u003c\/p\u003e\n\u003chr data-start=\"5457\" data-end=\"5460\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"5462\" data-end=\"5492\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"5494\" data-end=\"5771\"\u003e\n\u003cli data-section-id=\"8e7fsu\" data-start=\"5494\" data-end=\"5533\"\u003eInspect regularly for leaks and wear.\u003c\/li\u003e\n\u003cli data-section-id=\"1bk99f5\" data-start=\"5534\" data-end=\"5588\"\u003eVerify pressure settings during routine maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"zyd9dl\" data-start=\"5589\" data-end=\"5625\"\u003eClean injector passages as needed.\u003c\/li\u003e\n\u003cli data-section-id=\"1xpd6n4\" data-start=\"5626\" data-end=\"5669\"\u003eMonitor thermal relief valve performance.\u003c\/li\u003e\n\u003cli data-section-id=\"jd9knh\" data-start=\"5670\" data-end=\"5710\"\u003eMaintain clean inlet water filtration.\u003c\/li\u003e\n\u003cli data-section-id=\"6nxwyt\" data-start=\"5711\" data-end=\"5771\"\u003eReplace worn seals and internal components when necessary.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Mecline","offers":[{"title":"Default Title","offer_id":53429579776363,"sku":null,"price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/5058VRT3-310EZ.webp?v=1782522852","url":"https:\/\/generalsprayers.com\/products\/vrt3-310ez-unloader-valve-4500-psi-with-thermal-relief-valve-injector-oem-replacement-part","provider":"GeneralSprayers","version":"1.0","type":"link"}