{"product_id":"kit-72-repair-kit-for-hm-unloader-valve-oem-replacement-part","title":"Kit 72 Repair Kit for HM Unloader Valve – OEM Replacement Part","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp data-start=\"0\" data-end=\"153\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 4080\u003cbr data-start=\"21\" data-end=\"24\"\u003e\u003cstrong data-start=\"24\" data-end=\"37\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Parts → Unloader Valve Repair Kits\u003cbr data-start=\"88\" data-end=\"91\"\u003e\u003cstrong data-start=\"91\" data-end=\"100\"\u003eType:\u003c\/strong\u003e General Pump Kit 72 Repair Kit for HM Unloader Valve\u003c\/p\u003e\n\u003chr data-start=\"155\" data-end=\"158\"\u003e\n\u003cp data-start=\"232\" data-end=\"631\"\u003eThe \u003cstrong data-start=\"236\" data-end=\"283\"\u003eGeneral Pump Kit 72 Repair Kit (Part #4080)\u003c\/strong\u003e is a genuine OEM replacement rebuild kit designed specifically for servicing \u003cstrong data-start=\"361\" data-end=\"412\"\u003eGeneral Pump HM pressure washer unloader valves\u003c\/strong\u003e. This comprehensive repair kit includes the essential internal wear components required to restore proper pressure regulation, bypass operation, and sealing performance without replacing the complete unloader assembly.\u003c\/p\u003e\n\u003chr data-start=\"1061\" data-end=\"1064\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1066\" data-end=\"1092\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1094\" data-end=\"1505\"\u003e\n\u003cli data-section-id=\"jw71g1\" data-start=\"1094\" data-end=\"1131\"\u003eGenuine General Pump OEM repair kit\u003c\/li\u003e\n\u003cli data-section-id=\"1gycjws\" data-start=\"1132\" data-end=\"1178\"\u003eDesigned specifically for HM unloader valves\u003c\/li\u003e\n\u003cli data-section-id=\"jhde0\" data-start=\"1179\" data-end=\"1216\"\u003eRestores proper pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"148pgwu\" data-start=\"1217\" data-end=\"1260\"\u003eRebuilds worn internal sealing components\u003c\/li\u003e\n\u003cli data-section-id=\"izyose\" data-start=\"1261\" data-end=\"1288\"\u003eImproves bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"87uc3h\" data-start=\"1289\" data-end=\"1338\"\u003eHelps eliminate leaks and pressure fluctuations\u003c\/li\u003e\n\u003cli data-section-id=\"1v37cec\" data-start=\"1339\" data-end=\"1402\"\u003eCost-effective alternative to replacing the complete unloader\u003c\/li\u003e\n\u003cli data-section-id=\"srvg5o\" data-start=\"1403\" data-end=\"1434\"\u003eExtends unloader service life\u003c\/li\u003e\n\u003cli data-section-id=\"3iwt53\" data-start=\"1435\" data-end=\"1468\"\u003eOEM-quality fit and performance\u003c\/li\u003e\n\u003cli data-section-id=\"100lh3e\" data-start=\"1469\" data-end=\"1505\"\u003eIdeal for preventative maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1507\" data-end=\"1510\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1512\" data-end=\"1539\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1541\" data-end=\"1562\"\u003e\u003cstrong data-start=\"1541\" data-end=\"1557\"\u003ePart Number:\u003c\/strong\u003e 4080\u003c\/p\u003e\n\u003cp data-start=\"1564\" data-end=\"1594\"\u003e\u003cstrong data-start=\"1564\" data-end=\"1581\"\u003eManufacturer:\u003c\/strong\u003e General Pump\u003c\/p\u003e\n\u003cp data-start=\"1596\" data-end=\"1629\"\u003e\u003cstrong data-start=\"1596\" data-end=\"1615\"\u003eOEM Kit Number:\u003c\/strong\u003e Kit 72 (ZKHM)\u003c\/p\u003e\n\u003cp data-start=\"1631\" data-end=\"1674\"\u003e\u003cstrong data-start=\"1631\" data-end=\"1648\"\u003eProduct Type:\u003c\/strong\u003e Unloader Valve Repair Kit\u003c\/p\u003e\n\u003cp data-start=\"1676\" data-end=\"1731\"\u003e\u003cstrong data-start=\"1676\" data-end=\"1700\"\u003eCompatible Unloader:\u003c\/strong\u003e General Pump HM Unloader Valve\u003c\/p\u003e\n\u003cp data-start=\"1733\" data-end=\"1757\"\u003e\u003cstrong data-start=\"1733\" data-end=\"1753\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"1759\" data-end=\"1762\"\u003e\n\u003ch2 data-section-id=\"16vyn6v\" data-start=\"1764\" data-end=\"1801\"\u003eCompatible Unloader Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1803\" data-end=\"1895\"\u003eDesigned for servicing the General Pump HM Unloader Valve with the following specifications:\u003c\/p\u003e\n\u003cul data-start=\"1897\" data-end=\"2083\"\u003e\n\u003cli data-section-id=\"10a0hk7\" data-start=\"1897\" data-end=\"1930\"\u003e\n\u003cstrong data-start=\"1899\" data-end=\"1921\"\u003eMaximum Flow Rate:\u003c\/strong\u003e 10.8 GPM\u003c\/li\u003e\n\u003cli data-section-id=\"739zve\" data-start=\"1931\" data-end=\"1964\"\u003e\n\u003cstrong data-start=\"1933\" data-end=\"1954\"\u003eMaximum Pressure:\u003c\/strong\u003e 3,000 PSI\u003c\/li\u003e\n\u003cli data-section-id=\"gd36s2\" data-start=\"1965\" data-end=\"1997\"\u003e\n\u003cstrong data-start=\"1967\" data-end=\"1991\"\u003eMaximum Temperature:\u003c\/strong\u003e 165°F\u003c\/li\u003e\n\u003cli data-section-id=\"1eldydo\" data-start=\"1998\" data-end=\"2019\"\u003e\n\u003cstrong data-start=\"2000\" data-end=\"2010\"\u003eInlet:\u003c\/strong\u003e 3\/8\" FPT\u003c\/li\u003e\n\u003cli data-section-id=\"ddte1b\" data-start=\"2020\" data-end=\"2055\"\u003e\n\u003cstrong data-start=\"2022\" data-end=\"2033\"\u003eOutlet:\u003c\/strong\u003e 3\/8\" MPT and 1\/4\" FPT\u003c\/li\u003e\n\u003cli data-section-id=\"sjmwjk\" data-start=\"2056\" data-end=\"2083\"\u003e\n\u003cstrong data-start=\"2058\" data-end=\"2069\"\u003eBypass:\u003c\/strong\u003e Dual 3\/8\" FPT\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2085\" data-end=\"2122\"\u003e \u003c\/p\u003e\n\u003chr data-start=\"2124\" data-end=\"2127\"\u003e\n\u003ch2 data-section-id=\"x622x5\" data-start=\"2129\" data-end=\"2144\"\u003eKit Contents\u003c\/h2\u003e\n\u003cp data-start=\"2146\" data-end=\"2214\"\u003eThe General Pump Kit 72 includes OEM replacement components such as:\u003c\/p\u003e\n\u003cul data-start=\"2216\" data-end=\"2309\"\u003e\n\u003cli data-section-id=\"1l3a90j\" data-start=\"2216\" data-end=\"2228\"\u003eValve seat\u003c\/li\u003e\n\u003cli data-section-id=\"10z66m2\" data-start=\"2229\" data-end=\"2242\"\u003eValve guide\u003c\/li\u003e\n\u003cli data-section-id=\"13kqrkb\" data-start=\"2243\" data-end=\"2252\"\u003eO-rings\u003c\/li\u003e\n\u003cli data-section-id=\"10mmp6r\" data-start=\"2253\" data-end=\"2275\"\u003eAnti-extrusion rings\u003c\/li\u003e\n\u003cli data-section-id=\"1n78joq\" data-start=\"2276\" data-end=\"2285\"\u003eSprings\u003c\/li\u003e\n\u003cli data-section-id=\"7vbxz5\" data-start=\"2286\" data-end=\"2295\"\u003eWashers\u003c\/li\u003e\n\u003cli data-section-id=\"184729q\" data-start=\"2296\" data-end=\"2309\"\u003eCheck balls\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2311\" data-end=\"2457\"\u003eThese components restore the internal sealing surfaces and pressure-regulating mechanism of the HM unloader. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"2459\" data-end=\"2462\"\u003e\n\u003ch2 data-section-id=\"1k6octf\" data-start=\"2464\" data-end=\"2496\"\u003eWhy Rebuild Your HM Unloader?\u003c\/h2\u003e\n\u003cp data-start=\"2498\" data-end=\"2631\"\u003eOver time, normal operation causes wear to internal seals, valve seats, springs, and moving components. Rebuilding with Kit 72 helps:\u003c\/p\u003e\n\u003cul data-start=\"2633\" data-end=\"2812\"\u003e\n\u003cli data-section-id=\"1a7i3l5\" data-start=\"2633\" data-end=\"2671\"\u003eRestore factory pressure performance\u003c\/li\u003e\n\u003cli data-section-id=\"1ymtsod\" data-start=\"2672\" data-end=\"2698\"\u003eImprove bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"1wnnn7o\" data-start=\"2699\" data-end=\"2732\"\u003eEliminate pressure fluctuations\u003c\/li\u003e\n\u003cli data-section-id=\"2k225p\" data-start=\"2733\" data-end=\"2753\"\u003eReduce water leaks\u003c\/li\u003e\n\u003cli data-section-id=\"13rrccx\" data-start=\"2754\" data-end=\"2785\"\u003eExtend pump and unloader life\u003c\/li\u003e\n\u003cli data-section-id=\"n61lxp\" data-start=\"2786\" data-end=\"2812\"\u003eReduce maintenance costs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2814\" data-end=\"2929\"\u003eUsing genuine OEM replacement parts ensures proper fit, material compatibility, and dependable long-term operation.\u003c\/p\u003e\n\u003chr data-start=\"2931\" data-end=\"2934\"\u003e\n\u003ch2 data-section-id=\"1j8anl0\" data-start=\"2936\" data-end=\"2969\"\u003eCommon Signs Service Is Needed\u003c\/h2\u003e\n\u003cp data-start=\"2971\" data-end=\"3009\"\u003eRebuild the HM unloader if you notice:\u003c\/p\u003e\n\u003cul data-start=\"3011\" data-end=\"3224\"\u003e\n\u003cli data-section-id=\"zta6im\" data-start=\"3011\" data-end=\"3034\"\u003ePressure fluctuations\u003c\/li\u003e\n\u003cli data-section-id=\"bjpfob\" data-start=\"3035\" data-end=\"3068\"\u003eWater leaking from the unloader\u003c\/li\u003e\n\u003cli data-section-id=\"irubn0\" data-start=\"3069\" data-end=\"3096\"\u003eReduced cleaning pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1vz4ts\" data-start=\"3097\" data-end=\"3128\"\u003eInconsistent bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"1l7xs02\" data-start=\"3129\" data-end=\"3171\"\u003eDifficulty maintaining pressure settings\u003c\/li\u003e\n\u003cli data-section-id=\"1n6rxvr\" data-start=\"3172\" data-end=\"3198\"\u003eDelayed trigger response\u003c\/li\u003e\n\u003cli data-section-id=\"16xn7rj\" data-start=\"3199\" data-end=\"3224\"\u003eExcessive internal wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3226\" data-end=\"3229\"\u003e\n\u003ch2 data-section-id=\"vx2wyp\" data-start=\"3231\" data-end=\"3253\"\u003eCommon Applications\u003c\/h2\u003e\n\u003cp data-start=\"3255\" data-end=\"3293\"\u003eIdeal for servicing unloaders used on:\u003c\/p\u003e\n\u003cul data-start=\"3295\" data-end=\"3538\"\u003e\n\u003cli data-section-id=\"1ftw8hk\" data-start=\"3295\" data-end=\"3324\"\u003eCommercial pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"16ga20s\" data-start=\"3325\" data-end=\"3354\"\u003eIndustrial cleaning systems\u003c\/li\u003e\n\u003cli data-section-id=\"1mv9afl\" data-start=\"3355\" data-end=\"3380\"\u003eFleet washing equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1hsbtdy\" data-start=\"3381\" data-end=\"3406\"\u003eEquipment wash stations\u003c\/li\u003e\n\u003cli data-section-id=\"1jcdcam\" data-start=\"3407\" data-end=\"3440\"\u003eAgricultural cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1i0u86j\" data-start=\"3441\" data-end=\"3467\"\u003eManufacturing facilities\u003c\/li\u003e\n\u003cli data-section-id=\"17a9h0z\" data-start=\"3468\" data-end=\"3503\"\u003eContractor-grade pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1mppnl2\" data-start=\"3504\" data-end=\"3538\"\u003eMobile pressure washing trailers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3540\" data-end=\"3543\"\u003e\n\u003ch2 data-section-id=\"scsxo\" data-start=\"3545\" data-end=\"3582\"\u003ePerformance Benefits After Rebuild\u003c\/h2\u003e\n\u003cul data-start=\"3584\" data-end=\"3817\"\u003e\n\u003cli data-section-id=\"yrrh5h\" data-start=\"3584\" data-end=\"3614\"\u003eRestored pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"4tge10\" data-start=\"3615\" data-end=\"3644\"\u003eImproved bypass performance\u003c\/li\u003e\n\u003cli data-section-id=\"nm9c83\" data-start=\"3645\" data-end=\"3669\"\u003eBetter pump protection\u003c\/li\u003e\n\u003cli data-section-id=\"1ero2xq\" data-start=\"3670\" data-end=\"3695\"\u003eReduced pressure spikes\u003c\/li\u003e\n\u003cli data-section-id=\"1gpagnp\" data-start=\"3696\" data-end=\"3729\"\u003eConsistent cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"1w89m3i\" data-start=\"3730\" data-end=\"3762\"\u003eExtended unloader service life\u003c\/li\u003e\n\u003cli data-section-id=\"2ks8i6\" data-start=\"3763\" data-end=\"3788\"\u003eLower maintenance costs\u003c\/li\u003e\n\u003cli data-section-id=\"3b65a9\" data-start=\"3789\" data-end=\"3817\"\u003eReduced equipment downtime\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3819\" data-end=\"3822\"\u003e\n\u003ch2 data-section-id=\"16dprsq\" data-start=\"3824\" data-end=\"3845\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003col data-start=\"3847\" data-end=\"4280\"\u003e\n\u003cli data-section-id=\"v1qt1w\" data-start=\"3847\" data-end=\"3912\"\u003eShut down the pressure washer and relieve all system pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"unqxzk\" data-start=\"3913\" data-end=\"3953\"\u003eRemove the HM unloader from the pump.\u003c\/li\u003e\n\u003cli data-section-id=\"gv52h3\" data-start=\"3954\" data-end=\"4029\"\u003eDisassemble the unloader according to the manufacturer's service manual.\u003c\/li\u003e\n\u003cli data-section-id=\"r771py\" data-start=\"4030\" data-end=\"4083\"\u003eReplace all worn internal components using Kit 72.\u003c\/li\u003e\n\u003cli data-section-id=\"rk0i3h\" data-start=\"4084\" data-end=\"4150\"\u003eInspect the valve body and internal surfaces before reassembly.\u003c\/li\u003e\n\u003cli data-section-id=\"1o15nbe\" data-start=\"4151\" data-end=\"4215\"\u003eReinstall the unloader and verify proper pressure adjustment.\u003c\/li\u003e\n\u003cli data-section-id=\"aql9xu\" data-start=\"4216\" data-end=\"4280\"\u003eTest bypass operation before returning the system to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-start=\"4282\" data-end=\"4424\"\u003e\u003cstrong data-start=\"4282\" data-end=\"4296\"\u003eImportant:\u003c\/strong\u003e Always use genuine OEM replacement components and follow General Pump service procedures to ensure proper operation and safety.\u003c\/p\u003e\n\u003chr data-start=\"4426\" data-end=\"4429\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"4431\" data-end=\"4461\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"4463\" data-end=\"4769\"\u003e\n\u003cli data-section-id=\"1itmm1o\" data-start=\"4463\" data-end=\"4515\"\u003eInspect the unloader during scheduled maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"dsgw9w\" data-start=\"4516\" data-end=\"4582\"\u003eRebuild the valve when pressure regulation becomes inconsistent.\u003c\/li\u003e\n\u003cli data-section-id=\"q3d7yn\" data-start=\"4583\" data-end=\"4619\"\u003eKeep inlet water filtration clean.\u003c\/li\u003e\n\u003cli data-section-id=\"rr80fb\" data-start=\"4620\" data-end=\"4673\"\u003eAvoid prolonged bypass operation whenever possible.\u003c\/li\u003e\n\u003cli data-section-id=\"hle9j1\" data-start=\"4674\" data-end=\"4713\"\u003eMonitor operating pressure regularly.\u003c\/li\u003e\n\u003cli data-section-id=\"1xjksuq\" data-start=\"4714\" data-end=\"4769\"\u003eKeep a spare Kit 72 available for high-use equipment.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Pump","offers":[{"title":"Default Title","offer_id":53432561402219,"sku":null,"price":55.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/general-pump-logo_e3e04971-df65-43ed-b674-0ce87ddd117f.png?v=1782655146","url":"https:\/\/generalsprayers.com\/products\/kit-72-repair-kit-for-hm-unloader-valve-oem-replacement-part","provider":"GeneralSprayers","version":"1.0","type":"link"}