{"product_id":"k5-0-pressure-washer-unloader-valve-2-1-3-0-gpm-1450-3000-psi-oem-replacement-part","title":"K5.0 Pressure Washer Unloader Valve 2.1–3.0 GPM 1450–3000 PSI – OEM Replacement Part","description":"\u003cp data-start=\"0\" data-end=\"170\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 1597\u003cbr data-start=\"21\" data-end=\"24\"\u003e\u003cstrong data-start=\"24\" data-end=\"37\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Parts → Unloader Valves → Flow Actuated Unloader Valves\u003cbr data-start=\"109\" data-end=\"112\"\u003e\u003cstrong data-start=\"112\" data-end=\"121\"\u003eType:\u003c\/strong\u003e General Pump K5.0 Pressure Washer Unloader Valve\u003c\/p\u003e\n\u003chr data-start=\"172\" data-end=\"175\"\u003e\n\u003cp data-start=\"271\" data-end=\"781\"\u003eThe \u003cstrong data-start=\"275\" data-end=\"340\"\u003eGeneral Pump K5.0 Pressure Washer Unloader Valve (Part #1597)\u003c\/strong\u003e is a genuine OEM replacement \u003cstrong data-start=\"370\" data-end=\"402\"\u003eflow-actuated unloader valve\u003c\/strong\u003e designed for commercial and industrial pressure washer systems operating between \u003cstrong data-start=\"484\" data-end=\"503\"\u003e2.1 and 3.0 GPM\u003c\/strong\u003e with adjustable pressures from \u003cstrong data-start=\"535\" data-end=\"557\"\u003e1,450 to 3,000 PSI\u003c\/strong\u003e. Manufactured by \u003cstrong data-start=\"575\" data-end=\"591\"\u003eGeneral Pump\u003c\/strong\u003e, the K5.0 features a balanced piston design that delivers precise pressure regulation, dependable bypass operation, and outstanding protection for pumps and high-pressure system components.\u003c\/p\u003e\n\u003cp data-start=\"271\" data-end=\"781\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cem\u003eImage shown for illustrative purposes only\u003c\/em\u003e\u003cb id=\"docs-internal-guid-f1704467-7fff-a2f8-0dc1-96fc3f47067e\"\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003chr data-start=\"1566\" data-end=\"1569\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1571\" data-end=\"1597\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1599\" data-end=\"2177\"\u003e\n\u003cli data-section-id=\"1yufexy\" data-start=\"1599\" data-end=\"1652\"\u003eGenuine General Pump OEM replacement unloader valve\u003c\/li\u003e\n\u003cli data-section-id=\"1f1fr4f\" data-start=\"1653\" data-end=\"1691\"\u003eFlow-actuated balanced piston design\u003c\/li\u003e\n\u003cli data-section-id=\"1qhftuo\" data-start=\"1692\" data-end=\"1746\"\u003eDesigned for \u003cstrong data-start=\"1707\" data-end=\"1722\"\u003e2.1–3.0 GPM\u003c\/strong\u003e pressure washer systems\u003c\/li\u003e\n\u003cli data-section-id=\"109tiax\" data-start=\"1747\" data-end=\"1799\"\u003eAdjustable pressure range from \u003cstrong data-start=\"1780\" data-end=\"1799\"\u003e1,450–3,000 PSI\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"nh49g\" data-start=\"1800\" data-end=\"1845\"\u003eMaximum operating pressure of \u003cstrong data-start=\"1832\" data-end=\"1845\"\u003e3,000 PSI\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"gnc41p\" data-start=\"1846\" data-end=\"1900\"\u003eBalanced nozzle technology minimizes pressure spikes\u003c\/li\u003e\n\u003cli data-section-id=\"klevii\" data-start=\"1901\" data-end=\"1948\"\u003eStainless steel and brass internal components\u003c\/li\u003e\n\u003cli data-section-id=\"huu8c4\" data-start=\"1949\" data-end=\"2002\"\u003eDual gauge ports for convenient pressure monitoring\u003c\/li\u003e\n\u003cli data-section-id=\"1b5xif7\" data-start=\"2003\" data-end=\"2057\"\u003eSmooth transition between operating and bypass modes\u003c\/li\u003e\n\u003cli data-section-id=\"1sa1x6w\" data-start=\"2058\" data-end=\"2091\"\u003eHelps extend pump and hose life\u003c\/li\u003e\n\u003cli data-section-id=\"71ai47\" data-start=\"2092\" data-end=\"2143\"\u003eHeavy-duty commercial and industrial construction\u003c\/li\u003e\n\u003cli data-section-id=\"3iwt53\" data-start=\"2144\" data-end=\"2177\"\u003eOEM-quality fit and performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2179\" data-end=\"2182\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"2184\" data-end=\"2211\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"2213\" data-end=\"2234\"\u003e\u003cstrong data-start=\"2213\" data-end=\"2229\"\u003ePart Number:\u003c\/strong\u003e 1597\u003c\/p\u003e\n\u003cp data-start=\"2236\" data-end=\"2266\"\u003e\u003cstrong data-start=\"2236\" data-end=\"2253\"\u003eManufacturer:\u003c\/strong\u003e General Pump\u003c\/p\u003e\n\u003cp data-start=\"2268\" data-end=\"2283\"\u003e\u003cstrong data-start=\"2268\" data-end=\"2278\"\u003eModel:\u003c\/strong\u003e K5.0\u003c\/p\u003e\n\u003cp data-start=\"2285\" data-end=\"2331\"\u003e\u003cstrong data-start=\"2285\" data-end=\"2302\"\u003eProduct Type:\u003c\/strong\u003e Flow Actuated Unloader Valve\u003c\/p\u003e\n\u003cp data-start=\"2333\" data-end=\"2360\"\u003e\u003cstrong data-start=\"2333\" data-end=\"2348\"\u003eFlow Range:\u003c\/strong\u003e 2.1–3.0 GPM\u003c\/p\u003e\n\u003cp data-start=\"2362\" data-end=\"2396\"\u003e\u003cstrong data-start=\"2362\" data-end=\"2388\"\u003eMaximum Flow Capacity:\u003c\/strong\u003e 3.0 GPM\u003c\/p\u003e\n\u003cp data-start=\"2398\" data-end=\"2444\"\u003e\u003cstrong data-start=\"2398\" data-end=\"2428\"\u003ePressure Adjustment Range:\u003c\/strong\u003e 1,450–3,000 PSI\u003c\/p\u003e\n\u003cp data-start=\"2446\" data-end=\"2477\"\u003e\u003cstrong data-start=\"2446\" data-end=\"2467\"\u003eMaximum Pressure:\u003c\/strong\u003e 3,000 PSI\u003c\/p\u003e\n\u003cp data-start=\"2479\" data-end=\"2509\"\u003e\u003cstrong data-start=\"2479\" data-end=\"2503\"\u003eMaximum Temperature:\u003c\/strong\u003e 195°F\u003c\/p\u003e\n\u003cp data-start=\"2511\" data-end=\"2543\"\u003e\u003cstrong data-start=\"2511\" data-end=\"2532\"\u003eInlet Connection:\u003c\/strong\u003e 3\/8\" BSP-F\u003c\/p\u003e\n\u003cp data-start=\"2545\" data-end=\"2578\"\u003e\u003cstrong data-start=\"2545\" data-end=\"2567\"\u003eOutlet Connection:\u003c\/strong\u003e 3\/8\" BSP-M\u003c\/p\u003e\n\u003cp data-start=\"2580\" data-end=\"2613\"\u003e\u003cstrong data-start=\"2580\" data-end=\"2602\"\u003eBypass Connection:\u003c\/strong\u003e 3\/4\" BSP-M\u003c\/p\u003e\n\u003cp data-start=\"2615\" data-end=\"2636\"\u003e\u003cstrong data-start=\"2615\" data-end=\"2631\"\u003eGauge Ports:\u003c\/strong\u003e Dual\u003c\/p\u003e\n\u003cp data-start=\"2638\" data-end=\"2671\"\u003e\u003cstrong data-start=\"2638\" data-end=\"2657\"\u003eOperation Type:\u003c\/strong\u003e Flow Actuated\u003c\/p\u003e\n\u003cp data-start=\"2673\" data-end=\"2697\"\u003e\u003cstrong data-start=\"2673\" data-end=\"2693\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2699\" data-end=\"2702\"\u003e\n\u003ch2 data-section-id=\"12208fy\" data-start=\"2704\" data-end=\"2725\"\u003eHow the K5.0 Works\u003c\/h2\u003e\n\u003cp data-start=\"2727\" data-end=\"2804\"\u003eThe K5.0 regulates pressure using a balanced piston and flow-actuated design.\u003c\/p\u003e\n\u003cp data-start=\"2806\" data-end=\"2833\"\u003eWhen the spray gun is open:\u003c\/p\u003e\n\u003cul data-start=\"2835\" data-end=\"2996\"\u003e\n\u003cli data-section-id=\"17gvr3w\" data-start=\"2835\" data-end=\"2879\"\u003eWater flows normally through the unloader.\u003c\/li\u003e\n\u003cli data-section-id=\"9te9qv\" data-start=\"2880\" data-end=\"2936\"\u003eThe balanced piston remains in the operating position.\u003c\/li\u003e\n\u003cli data-section-id=\"1o9ynhs\" data-start=\"2937\" data-end=\"2996\"\u003eFull operating pressure is delivered to the spray nozzle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2998\" data-end=\"3027\"\u003eWhen the spray gun is closed:\u003c\/p\u003e\n\u003cul data-start=\"3029\" data-end=\"3272\"\u003e\n\u003cli data-section-id=\"1hewgq2\" data-start=\"3029\" data-end=\"3048\"\u003eWater flow stops.\u003c\/li\u003e\n\u003cli data-section-id=\"in7h15\" data-start=\"3049\" data-end=\"3101\"\u003ePressure rises downstream of the internal orifice.\u003c\/li\u003e\n\u003cli data-section-id=\"46fur8\" data-start=\"3102\" data-end=\"3145\"\u003eThe balanced piston shifts automatically.\u003c\/li\u003e\n\u003cli data-section-id=\"n7gl8r\" data-start=\"3146\" data-end=\"3193\"\u003eWater is diverted through the bypass circuit.\u003c\/li\u003e\n\u003cli data-section-id=\"1dxjmyr\" data-start=\"3194\" data-end=\"3272\"\u003ePressure spikes are minimized while protecting the pump and plumbing system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3274\" data-end=\"3407\"\u003eThis balanced design delivers smoother operation than conventional unloader valves while reducing wear on pressure washer components.\u003c\/p\u003e\n\u003chr data-start=\"3409\" data-end=\"3412\"\u003e\n\u003ch2 data-section-id=\"vx2wyp\" data-start=\"3414\" data-end=\"3436\"\u003eCommon Applications\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1m7fljq\" data-start=\"3438\" data-end=\"3469\"\u003eCommercial Pressure Washers\u003c\/h3\u003e\n\u003cp data-start=\"3471\" data-end=\"3481\"\u003eIdeal for:\u003c\/p\u003e\n\u003cul data-start=\"3483\" data-end=\"3621\"\u003e\n\u003cli data-section-id=\"1mppnl2\" data-start=\"3483\" data-end=\"3517\"\u003eMobile pressure washing trailers\u003c\/li\u003e\n\u003cli data-section-id=\"17a9h0z\" data-start=\"3518\" data-end=\"3553\"\u003eContractor-grade pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1hb3h7x\" data-start=\"3554\" data-end=\"3577\"\u003eFleet washing systems\u003c\/li\u003e\n\u003cli data-section-id=\"1hcbv4i\" data-start=\"3578\" data-end=\"3600\"\u003eProperty maintenance\u003c\/li\u003e\n\u003cli data-section-id=\"9ezizr\" data-start=\"3601\" data-end=\"3621\"\u003eEquipment cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"m9dt0u\" data-start=\"3623\" data-end=\"3656\"\u003eIndustrial Cleaning Equipment\u003c\/h3\u003e\n\u003cp data-start=\"3658\" data-end=\"3671\"\u003eSuitable for:\u003c\/p\u003e\n\u003cul data-start=\"3673\" data-end=\"3823\"\u003e\n\u003cli data-section-id=\"1i0u86j\" data-start=\"3673\" data-end=\"3699\"\u003eManufacturing facilities\u003c\/li\u003e\n\u003cli data-section-id=\"9bm7jy\" data-start=\"3700\" data-end=\"3733\"\u003eAgricultural equipment cleaning\u003c\/li\u003e\n\u003cli data-section-id=\"1q52hyj\" data-start=\"3734\" data-end=\"3760\"\u003eIndustrial wash stations\u003c\/li\u003e\n\u003cli data-section-id=\"10tc7t6\" data-start=\"3761\" data-end=\"3796\"\u003eMunicipal maintenance departments\u003c\/li\u003e\n\u003cli data-section-id=\"167zffo\" data-start=\"3797\" data-end=\"3823\"\u003eHeavy equipment cleaning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1m4yfbj\" data-start=\"3825\" data-end=\"3852\"\u003ePressure Washer Systems\u003c\/h3\u003e\n\u003cp data-start=\"3854\" data-end=\"3870\"\u003eCompatible with:\u003c\/p\u003e\n\u003cul data-start=\"3872\" data-end=\"4036\"\u003e\n\u003cli data-section-id=\"e1w54q\" data-start=\"3872\" data-end=\"3901\"\u003eBelt-drive pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1d973ig\" data-start=\"3902\" data-end=\"3933\"\u003eDirect-drive pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"g7mqf6\" data-start=\"3934\" data-end=\"3962\"\u003eHot water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"1l5zndh\" data-start=\"3963\" data-end=\"3992\"\u003eCold water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"ljit72\" data-start=\"3993\" data-end=\"4036\"\u003eCustom commercial pressure washer systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4038\" data-end=\"4041\"\u003e\n\u003ch2 data-section-id=\"ctfpuh\" data-start=\"4043\" data-end=\"4066\"\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cul data-start=\"4068\" data-end=\"4292\"\u003e\n\u003cli data-section-id=\"13mgugy\" data-start=\"4068\" data-end=\"4097\"\u003ePrecise pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"1nzrik5\" data-start=\"4098\" data-end=\"4123\"\u003eSmooth bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"1ero2xq\" data-start=\"4124\" data-end=\"4149\"\u003eReduced pressure spikes\u003c\/li\u003e\n\u003cli data-section-id=\"1bb2u3x\" data-start=\"4150\" data-end=\"4176\"\u003eImproved pump protection\u003c\/li\u003e\n\u003cli data-section-id=\"1gpagnp\" data-start=\"4177\" data-end=\"4210\"\u003eConsistent cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"1kjg8fj\" data-start=\"4211\" data-end=\"4240\"\u003eExtended equipment lifespan\u003c\/li\u003e\n\u003cli data-section-id=\"2ks8i6\" data-start=\"4241\" data-end=\"4266\"\u003eLower maintenance costs\u003c\/li\u003e\n\u003cli data-section-id=\"1n877ue\" data-start=\"4267\" data-end=\"4292\"\u003eReliable OEM durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4294\" data-end=\"4297\"\u003e\n\u003ch2 data-section-id=\"x2tt67\" data-start=\"4299\" data-end=\"4343\"\u003eSigns an Unloader Valve Needs Replacement\u003c\/h2\u003e\n\u003cp data-start=\"4345\" data-end=\"4391\"\u003eInspect or replace the unloader if you notice:\u003c\/p\u003e\n\u003cul data-start=\"4393\" data-end=\"4594\"\u003e\n\u003cli data-section-id=\"zta6im\" data-start=\"4393\" data-end=\"4416\"\u003ePressure fluctuations\u003c\/li\u003e\n\u003cli data-section-id=\"irubn0\" data-start=\"4417\" data-end=\"4444\"\u003eReduced cleaning pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1g7kb8v\" data-start=\"4445\" data-end=\"4477\"\u003eWater leakage around the valve\u003c\/li\u003e\n\u003cli data-section-id=\"op63ib\" data-start=\"4478\" data-end=\"4509\"\u003eDifficulty adjusting pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1vz4ts\" data-start=\"4510\" data-end=\"4541\"\u003eInconsistent bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"1n6rxvr\" data-start=\"4542\" data-end=\"4568\"\u003eDelayed trigger response\u003c\/li\u003e\n\u003cli data-section-id=\"16xn7rj\" data-start=\"4569\" data-end=\"4594\"\u003eExcessive internal wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4596\" data-end=\"4599\"\u003e\n\u003ch2 data-section-id=\"16dprsq\" data-start=\"4601\" data-end=\"4622\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003col data-start=\"4624\" data-end=\"5080\"\u003e\n\u003cli data-section-id=\"jswuv9\" data-start=\"4624\" data-end=\"4707\"\u003eVerify compatibility with your pressure washer's flow and pressure requirements.\u003c\/li\u003e\n\u003cli data-section-id=\"obykb\" data-start=\"4708\" data-end=\"4768\"\u003eInstall using the proper BSP fittings and thread sealant.\u003c\/li\u003e\n\u003cli data-section-id=\"1q33z2i\" data-start=\"4769\" data-end=\"4865\"\u003eConnect the inlet, outlet, and bypass ports according to the pressure washer plumbing layout.\u003c\/li\u003e\n\u003cli data-section-id=\"eiytn6\" data-start=\"4866\" data-end=\"4952\"\u003eInstall a pressure gauge using one of the dual gauge ports for accurate adjustment.\u003c\/li\u003e\n\u003cli data-section-id=\"lnumsj\" data-start=\"4953\" data-end=\"5017\"\u003eSet the operating pressure using a calibrated pressure gauge.\u003c\/li\u003e\n\u003cli data-section-id=\"fp39ip\" data-start=\"5018\" data-end=\"5080\"\u003eMaintain a \u003cstrong data-start=\"5032\" data-end=\"5058\"\u003eminimum 5% bypass flow\u003c\/strong\u003e for proper operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-start=\"5082\" data-end=\"5278\"\u003e\u003cstrong data-start=\"5082\" data-end=\"5096\"\u003eImportant:\u003c\/strong\u003e Ensure all pressure washer components—including pumps, hoses, spray guns, fittings, and nozzles—are rated for the intended operating pressure before placing the system into service.\u003c\/p\u003e\n\u003chr data-start=\"5280\" data-end=\"5283\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"5285\" data-end=\"5315\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"5317\" data-end=\"5644\"\u003e\n\u003cli data-section-id=\"vakiz1\" data-start=\"5317\" data-end=\"5369\"\u003eInspect the unloader regularly for leaks and wear.\u003c\/li\u003e\n\u003cli data-section-id=\"dwtr3i\" data-start=\"5370\" data-end=\"5426\"\u003eVerify pressure settings during scheduled maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"q3d7yn\" data-start=\"5427\" data-end=\"5463\"\u003eKeep inlet water filtration clean.\u003c\/li\u003e\n\u003cli data-section-id=\"1vqtz4t\" data-start=\"5464\" data-end=\"5511\"\u003eMaintain the recommended minimum bypass flow.\u003c\/li\u003e\n\u003cli data-section-id=\"1fv3cus\" data-start=\"5512\" data-end=\"5587\"\u003eReplace worn seals and internal components using genuine OEM repair kits.\u003c\/li\u003e\n\u003cli data-section-id=\"14cgjbx\" data-start=\"5588\" data-end=\"5644\"\u003eFollow General Pump recommended maintenance intervals.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Pump","offers":[{"title":"Default Title","offer_id":53433563611499,"sku":null,"price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/K5.0UNLOADER.png?v=1782701127","url":"https:\/\/generalsprayers.com\/products\/k5-0-pressure-washer-unloader-valve-2-1-3-0-gpm-1450-3000-psi-oem-replacement-part","provider":"GeneralSprayers","version":"1.0","type":"link"}