{"product_id":"ar20821-mini-matic-unloader-valve-2600-psi-1-2-fpt-inlet-oem-replacement-part","title":"AR20821 Mini-Matic Unloader Valve 2600 PSI 1\/2\" FPT Inlet – OEM Replacement Part","description":"\u003cp data-start=\"0\" data-end=\"168\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 6445\u003cbr data-start=\"21\" data-end=\"24\"\u003e\u003cstrong data-start=\"24\" data-end=\"37\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Parts → Unloader Valves → Bolt-On \u0026amp; Compact Unloader Valves\u003cbr data-start=\"113\" data-end=\"116\"\u003e\u003cstrong data-start=\"116\" data-end=\"125\"\u003eType:\u003c\/strong\u003e AR Pumps AR20821 Mini-Matic Unloader Valve\u003c\/p\u003e\n\u003chr data-start=\"170\" data-end=\"173\"\u003e\n\u003cp data-start=\"265\" data-end=\"726\"\u003eThe \u003cstrong data-start=\"269\" data-end=\"328\"\u003eAR Pumps AR20821 Mini-Matic Unloader Valve (Part #6445)\u003c\/strong\u003e is a compact OEM replacement unloader designed to provide dependable pressure regulation and pump protection for residential, commercial, and light industrial pressure washer systems. Manufactured by \u003cstrong data-start=\"529\" data-end=\"560\"\u003eAR Pumps (Annovi Reverberi)\u003c\/strong\u003e, this reliable pressure-actuated unloader is rated for pressures up to \u003cstrong data-start=\"632\" data-end=\"645\"\u003e2,600 PSI\u003c\/strong\u003e, flow rates from \u003cstrong data-start=\"663\" data-end=\"681\"\u003e3.0 to 5.0 GPM\u003c\/strong\u003e, and operating temperatures up to \u003cstrong data-start=\"716\" data-end=\"725\"\u003e160°F\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"1444\" data-end=\"1447\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1449\" data-end=\"1475\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1477\" data-end=\"1999\"\u003e\n\u003cli data-section-id=\"178z840\" data-start=\"1477\" data-end=\"1526\"\u003eGenuine AR Pumps OEM replacement unloader valve\u003c\/li\u003e\n\u003cli data-section-id=\"1fwnplt\" data-start=\"1527\" data-end=\"1554\"\u003eCompact Mini-Matic design\u003c\/li\u003e\n\u003cli data-section-id=\"12ljzsi\" data-start=\"1555\" data-end=\"1578\"\u003eRated up to 2,600 PSI\u003c\/li\u003e\n\u003cli data-section-id=\"10qtjl2\" data-start=\"1579\" data-end=\"1620\"\u003eSupports flow rates from 3.0 to 5.0 GPM\u003c\/li\u003e\n\u003cli data-section-id=\"1tjntnq\" data-start=\"1621\" data-end=\"1667\"\u003eAutomatically diverts water into bypass mode\u003c\/li\u003e\n\u003cli data-section-id=\"sg34f3\" data-start=\"1668\" data-end=\"1734\"\u003eHelps protect pumps and plumbing components from pressure spikes\u003c\/li\u003e\n\u003cli data-section-id=\"1h4lg4j\" data-start=\"1735\" data-end=\"1766\"\u003eNo built-in chemical injector\u003c\/li\u003e\n\u003cli data-section-id=\"ioi142\" data-start=\"1767\" data-end=\"1824\"\u003eSpace-saving design for compact pressure washer systems\u003c\/li\u003e\n\u003cli data-section-id=\"1bl7wox\" data-start=\"1825\" data-end=\"1855\"\u003eReliable pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"3u46tj\" data-start=\"1856\" data-end=\"1906\"\u003eSuitable for hot and cold water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1ufdfx2\" data-start=\"1907\" data-end=\"1951\"\u003eDurable construction for long service life\u003c\/li\u003e\n\u003cli data-section-id=\"n2jdbr\" data-start=\"1952\" data-end=\"1999\"\u003eIdeal for repair and replacement applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2001\" data-end=\"2004\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"2006\" data-end=\"2033\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"2035\" data-end=\"2056\"\u003e\u003cstrong data-start=\"2035\" data-end=\"2051\"\u003ePart Number:\u003c\/strong\u003e 6445\u003c\/p\u003e\n\u003cp data-start=\"2058\" data-end=\"2103\"\u003e\u003cstrong data-start=\"2058\" data-end=\"2075\"\u003eManufacturer:\u003c\/strong\u003e AR Pumps (Annovi Reverberi)\u003c\/p\u003e\n\u003cp data-start=\"2105\" data-end=\"2142\"\u003e\u003cstrong data-start=\"2105\" data-end=\"2134\"\u003eManufacturer Part Number:\u003c\/strong\u003e AR20821\u003c\/p\u003e\n\u003cp data-start=\"2144\" data-end=\"2165\"\u003e\u003cstrong data-start=\"2144\" data-end=\"2154\"\u003eModel:\u003c\/strong\u003e Mini-Matic\u003c\/p\u003e\n\u003cp data-start=\"2167\" data-end=\"2215\"\u003e\u003cstrong data-start=\"2167\" data-end=\"2184\"\u003eProduct Type:\u003c\/strong\u003e Pressure Washer Unloader Valve\u003c\/p\u003e\n\u003cp data-start=\"2217\" data-end=\"2248\"\u003e\u003cstrong data-start=\"2217\" data-end=\"2238\"\u003eMaximum Pressure:\u003c\/strong\u003e 2,600 PSI\u003c\/p\u003e\n\u003cp data-start=\"2250\" data-end=\"2279\"\u003e\u003cstrong data-start=\"2250\" data-end=\"2265\"\u003eFlow Range:\u003c\/strong\u003e 3.0 – 5.0 GPM\u003c\/p\u003e\n\u003cp data-start=\"2281\" data-end=\"2311\"\u003e\u003cstrong data-start=\"2281\" data-end=\"2305\"\u003eMaximum Temperature:\u003c\/strong\u003e 160°F\u003c\/p\u003e\n\u003cp data-start=\"2313\" data-end=\"2343\"\u003e\u003cstrong data-start=\"2313\" data-end=\"2334\"\u003eInlet Connection:\u003c\/strong\u003e 1\/2\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2345\" data-end=\"2376\"\u003e\u003cstrong data-start=\"2345\" data-end=\"2367\"\u003eOutlet Connection:\u003c\/strong\u003e 3\/8\" MPT\u003c\/p\u003e\n\u003cp data-start=\"2378\" data-end=\"2403\"\u003e\u003cstrong data-start=\"2378\" data-end=\"2400\"\u003eChemical Injector:\u003c\/strong\u003e No\u003c\/p\u003e\n\u003cp data-start=\"2405\" data-end=\"2429\"\u003e\u003cstrong data-start=\"2405\" data-end=\"2425\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2431\" data-end=\"2434\"\u003e\n\u003ch2 data-section-id=\"qh7csz\" data-start=\"2436\" data-end=\"2467\"\u003eMini-Matic Design Advantages\u003c\/h2\u003e\n\u003cp data-start=\"2469\" data-end=\"2501\"\u003eThe AR20821 Mini-Matic provides:\u003c\/p\u003e\n\u003cul data-start=\"2503\" data-end=\"2707\"\u003e\n\u003cli data-section-id=\"1wriplc\" data-start=\"2503\" data-end=\"2535\"\u003eCompact installation footprint\u003c\/li\u003e\n\u003cli data-section-id=\"1bl7wox\" data-start=\"2536\" data-end=\"2566\"\u003eReliable pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"1x21sel\" data-start=\"2567\" data-end=\"2594\"\u003eReduced system complexity\u003c\/li\u003e\n\u003cli data-section-id=\"1oxq937\" data-start=\"2595\" data-end=\"2637\"\u003eEasy integration with existing equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1q970n7\" data-start=\"2638\" data-end=\"2667\"\u003eDependable bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"1kn0t5b\" data-start=\"2668\" data-end=\"2707\"\u003eSimple maintenance and serviceability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2709\" data-end=\"2817\"\u003eIts compact design makes it particularly popular for direct-drive and smaller-frame pressure washer systems.\u003c\/p\u003e\n\u003chr data-start=\"2819\" data-end=\"2822\"\u003e\n\u003ch2 data-section-id=\"1kehdxb\" data-start=\"2824\" data-end=\"2854\"\u003eWhat an Unloader Valve Does\u003c\/h2\u003e\n\u003cp data-start=\"2856\" data-end=\"2895\"\u003eThe Mini-Matic unloader is designed to:\u003c\/p\u003e\n\u003cul data-start=\"2897\" data-end=\"3120\"\u003e\n\u003cli data-section-id=\"1guzp1l\" data-start=\"2897\" data-end=\"2926\"\u003eRegulate operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1gzaa3t\" data-start=\"2927\" data-end=\"2979\"\u003eDivert water flow when the trigger gun is released\u003c\/li\u003e\n\u003cli data-section-id=\"syvdyp\" data-start=\"2980\" data-end=\"3016\"\u003ePrevent excessive pressure buildup\u003c\/li\u003e\n\u003cli data-section-id=\"zv23ry\" data-start=\"3017\" data-end=\"3059\"\u003eProtect pumps, hoses, guns, and fittings\u003c\/li\u003e\n\u003cli data-section-id=\"1eg0b0n\" data-start=\"3060\" data-end=\"3088\"\u003eImprove system reliability\u003c\/li\u003e\n\u003cli data-section-id=\"13l284f\" data-start=\"3089\" data-end=\"3120\"\u003eExtend equipment service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3122\" data-end=\"3222\"\u003eWhen the spray gun is closed, water is redirected through the bypass circuit until cleaning resumes.\u003c\/p\u003e\n\u003chr data-start=\"3224\" data-end=\"3227\"\u003e\n\u003ch2 data-section-id=\"vx2wyp\" data-start=\"3229\" data-end=\"3251\"\u003eCommon Applications\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1m4yfbj\" data-start=\"3253\" data-end=\"3280\"\u003ePressure Washer Systems\u003c\/h3\u003e\n\u003cp data-start=\"3282\" data-end=\"3292\"\u003eIdeal for:\u003c\/p\u003e\n\u003cul data-start=\"3294\" data-end=\"3430\"\u003e\n\u003cli data-section-id=\"xvja5y\" data-start=\"3294\" data-end=\"3324\"\u003eResidential pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1ftw8hk\" data-start=\"3325\" data-end=\"3354\"\u003eCommercial pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1tn47m\" data-start=\"3355\" data-end=\"3377\"\u003eDirect-drive systems\u003c\/li\u003e\n\u003cli data-section-id=\"8x7dq8\" data-start=\"3378\" data-end=\"3406\"\u003eCompact cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"5z2q8o\" data-start=\"3407\" data-end=\"3430\"\u003eMobile cleaning units\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"pnm616\" data-start=\"3432\" data-end=\"3457\"\u003eCleaning Applications\u003c\/h3\u003e\n\u003cul data-start=\"3459\" data-end=\"3579\"\u003e\n\u003cli data-section-id=\"1hcbv4i\" data-start=\"3459\" data-end=\"3481\"\u003eProperty maintenance\u003c\/li\u003e\n\u003cli data-section-id=\"d4mmu5\" data-start=\"3482\" data-end=\"3499\"\u003eVehicle washing\u003c\/li\u003e\n\u003cli data-section-id=\"9ezizr\" data-start=\"3500\" data-end=\"3520\"\u003eEquipment cleaning\u003c\/li\u003e\n\u003cli data-section-id=\"64g5as\" data-start=\"3521\" data-end=\"3544\"\u003eAgricultural cleaning\u003c\/li\u003e\n\u003cli data-section-id=\"1swae4q\" data-start=\"3545\" data-end=\"3579\"\u003eGeneral maintenance applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3581\" data-end=\"3584\"\u003e\n\u003ch2 data-section-id=\"ctfpuh\" data-start=\"3586\" data-end=\"3609\"\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cul data-start=\"3611\" data-end=\"3838\"\u003e\n\u003cli data-section-id=\"18ot7jt\" data-start=\"3611\" data-end=\"3643\"\u003eConsistent pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"1bb2u3x\" data-start=\"3644\" data-end=\"3670\"\u003eImproved pump protection\u003c\/li\u003e\n\u003cli data-section-id=\"1e09b5\" data-start=\"3671\" data-end=\"3700\"\u003eCompact installation design\u003c\/li\u003e\n\u003cli data-section-id=\"19klfdu\" data-start=\"3701\" data-end=\"3725\"\u003eReduced component wear\u003c\/li\u003e\n\u003cli data-section-id=\"bjv0nj\" data-start=\"3726\" data-end=\"3753\"\u003eReliable bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"1xddxfc\" data-start=\"3754\" data-end=\"3783\"\u003eStable cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"1wdzf4p\" data-start=\"3784\" data-end=\"3803\"\u003eLong service life\u003c\/li\u003e\n\u003cli data-section-id=\"1xihk4o\" data-start=\"3804\" data-end=\"3838\"\u003eOEM-quality replacement solution\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3840\" data-end=\"3843\"\u003e\n\u003ch2 data-section-id=\"x2tt67\" data-start=\"3845\" data-end=\"3889\"\u003eSigns an Unloader Valve Needs Replacement\u003c\/h2\u003e\n\u003cp data-start=\"3891\" data-end=\"3926\"\u003eReplace the unloader if you notice:\u003c\/p\u003e\n\u003cul data-start=\"3928\" data-end=\"4152\"\u003e\n\u003cli data-section-id=\"zta6im\" data-start=\"3928\" data-end=\"3951\"\u003ePressure fluctuations\u003c\/li\u003e\n\u003cli data-section-id=\"irubn0\" data-start=\"3952\" data-end=\"3979\"\u003eReduced cleaning pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1g7kb8v\" data-start=\"3980\" data-end=\"4012\"\u003eWater leakage around the valve\u003c\/li\u003e\n\u003cli data-section-id=\"op63ib\" data-start=\"4013\" data-end=\"4044\"\u003eDifficulty adjusting pressure\u003c\/li\u003e\n\u003cli data-section-id=\"uz2anl\" data-start=\"4045\" data-end=\"4068\"\u003eExcessive bypass flow\u003c\/li\u003e\n\u003cli data-section-id=\"d4j17h\" data-start=\"4069\" data-end=\"4092\"\u003ePump cycling problems\u003c\/li\u003e\n\u003cli data-section-id=\"1q6b73y\" data-start=\"4093\" data-end=\"4125\"\u003eInconsistent spray performance\u003c\/li\u003e\n\u003cli data-section-id=\"1knavrr\" data-start=\"4126\" data-end=\"4152\"\u003eWorn internal components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4154\" data-end=\"4157\"\u003e\n\u003ch2 data-section-id=\"16dprsq\" data-start=\"4159\" data-end=\"4180\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003col data-start=\"4182\" data-end=\"4590\"\u003e\n\u003cli data-section-id=\"v1qt1w\" data-start=\"4182\" data-end=\"4247\"\u003eShut down the pressure washer and relieve all system pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"14l3q9l\" data-start=\"4248\" data-end=\"4315\"\u003eVerify compatibility with system pressure and flow requirements.\u003c\/li\u003e\n\u003cli data-section-id=\"103tomg\" data-start=\"4316\" data-end=\"4365\"\u003eInstall using the proper threaded connections.\u003c\/li\u003e\n\u003cli data-section-id=\"1lhhw4v\" data-start=\"4366\" data-end=\"4405\"\u003eApply thread sealant where required.\u003c\/li\u003e\n\u003cli data-section-id=\"1r8bc8i\" data-start=\"4406\" data-end=\"4473\"\u003eAdjust operating pressure according to equipment specifications.\u003c\/li\u003e\n\u003cli data-section-id=\"j9i1c6\" data-start=\"4474\" data-end=\"4524\"\u003eTest the system for proper operation and leaks.\u003c\/li\u003e\n\u003cli data-section-id=\"1s8g0d3\" data-start=\"4525\" data-end=\"4590\"\u003eConfirm stable pressure before returning equipment to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-start=\"4592\" data-end=\"4727\"\u003e\u003cstrong data-start=\"4592\" data-end=\"4606\"\u003eImportant:\u003c\/strong\u003e Always ensure the pressure washer pump and all accessories are rated for the intended operating pressure and flow range.\u003c\/p\u003e\n\u003chr data-start=\"4729\" data-end=\"4732\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"4734\" data-end=\"4764\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"4766\" data-end=\"5041\"\u003e\n\u003cli data-section-id=\"8e7fsu\" data-start=\"4766\" data-end=\"4805\"\u003eInspect regularly for leaks and wear.\u003c\/li\u003e\n\u003cli data-section-id=\"1bk99f5\" data-start=\"4806\" data-end=\"4860\"\u003eVerify pressure settings during routine maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"jd9knh\" data-start=\"4861\" data-end=\"4901\"\u003eMaintain clean inlet water filtration.\u003c\/li\u003e\n\u003cli data-section-id=\"1uztswy\" data-start=\"4902\" data-end=\"4942\"\u003eMonitor bypass operation periodically.\u003c\/li\u003e\n\u003cli data-section-id=\"16ap0lr\" data-start=\"4943\" data-end=\"4998\"\u003eReplace worn seals and internal components as needed.\u003c\/li\u003e\n\u003cli data-section-id=\"fjgwaw\" data-start=\"4999\" data-end=\"5041\"\u003eFollow AR Pumps service recommendations.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Annovi Reverberi","offers":[{"title":"Default Title","offer_id":53429152711019,"sku":null,"price":110.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/AR20821Unloader.webp?v=1782508329","url":"https:\/\/generalsprayers.com\/products\/ar20821-mini-matic-unloader-valve-2600-psi-1-2-fpt-inlet-oem-replacement-part","provider":"GeneralSprayers","version":"1.0","type":"link"}