{"product_id":"st-261-s-pressure-washer-unloader-valve-with-pressure-switch-oem-replacement-part","title":"ST-261-S Pressure Washer Unloader Valve with Pressure Switch – OEM Replacement Part","description":"\u003cp data-start=\"0\" data-end=\"189\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 2379\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-Activated Unloaders\u003cbr data-start=\"108\" data-end=\"111\"\u003e\u003cstrong data-start=\"111\" data-end=\"120\"\u003eType:\u003c\/strong\u003e Suttner ST-261-S Pressure Washer Unloader Valve with Pressure Switch\u003c\/p\u003e\n\u003chr data-start=\"191\" data-end=\"194\"\u003e\n\u003cp data-start=\"289\" data-end=\"748\"\u003eThe \u003cstrong data-start=\"293\" data-end=\"378\"\u003eSuttner ST-261-S Pressure Washer Unloader Valve with Pressure Switch (Part #2379)\u003c\/strong\u003e is a premium OEM replacement unloader designed to provide reliable pressure regulation and automatic pressure-switch functionality for commercial and industrial pressure washer systems. Manufactured by \u003cstrong data-start=\"581\" data-end=\"592\"\u003eSuttner\u003c\/strong\u003e, the ST-261-S is rated for up to \u003cstrong data-start=\"626\" data-end=\"639\"\u003e3,625 PSI\u003c\/strong\u003e, \u003cstrong data-start=\"641\" data-end=\"650\"\u003e8 GPM\u003c\/strong\u003e, and temperatures up to \u003cstrong data-start=\"675\" data-end=\"684\"\u003e176°F\u003c\/strong\u003e, making it an ideal choice for professional cleaning equipment.\u003c\/p\u003e\n\u003chr data-start=\"1335\" data-end=\"1338\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1340\" data-end=\"1366\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1368\" data-end=\"1841\"\u003e\n\u003cli data-section-id=\"1cqnf1z\" data-start=\"1368\" data-end=\"1416\"\u003eGenuine Suttner OEM replacement unloader valve\u003c\/li\u003e\n\u003cli data-section-id=\"75y2jn\" data-start=\"1417\" data-end=\"1459\"\u003eIntegrated pressure switch functionality\u003c\/li\u003e\n\u003cli data-section-id=\"1b8ebas\" data-start=\"1460\" data-end=\"1483\"\u003eRated up to 3,625 PSI\u003c\/li\u003e\n\u003cli data-section-id=\"1d0ei23\" data-start=\"1484\" data-end=\"1517\"\u003eSupports flow rates up to 8 GPM\u003c\/li\u003e\n\u003cli data-section-id=\"1tjntnq\" data-start=\"1518\" data-end=\"1564\"\u003eAutomatically diverts water into bypass mode\u003c\/li\u003e\n\u003cli data-section-id=\"26wjm6\" data-start=\"1565\" data-end=\"1607\"\u003eHelps protect pumps from pressure spikes\u003c\/li\u003e\n\u003cli data-section-id=\"15dnrqn\" data-start=\"1608\" data-end=\"1652\"\u003eCompatible with automatic shutdown systems\u003c\/li\u003e\n\u003cli data-section-id=\"1pt5a32\" data-start=\"1653\" data-end=\"1685\"\u003eAdjustable pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"7dzq54\" data-start=\"1686\" data-end=\"1725\"\u003eDurable commercial-grade construction\u003c\/li\u003e\n\u003cli data-section-id=\"3u46tj\" data-start=\"1726\" data-end=\"1776\"\u003eSuitable for hot and cold water pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"3t9ag8\" data-start=\"1777\" data-end=\"1821\"\u003eImproves system efficiency and reliability\u003c\/li\u003e\n\u003cli data-section-id=\"1wdzf4p\" data-start=\"1822\" data-end=\"1841\"\u003eLong service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1843\" data-end=\"1846\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"1848\" data-end=\"1875\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"1877\" data-end=\"1898\"\u003e\u003cstrong data-start=\"1877\" data-end=\"1893\"\u003ePart Number:\u003c\/strong\u003e 2379\u003c\/p\u003e\n\u003cp data-start=\"1900\" data-end=\"1925\"\u003e\u003cstrong data-start=\"1900\" data-end=\"1917\"\u003eManufacturer:\u003c\/strong\u003e Suttner\u003c\/p\u003e\n\u003cp data-start=\"1927\" data-end=\"1955\"\u003e\u003cstrong data-start=\"1927\" data-end=\"1937\"\u003eModel:\u003c\/strong\u003e ST-261-S (ST261S)\u003c\/p\u003e\n\u003cp data-start=\"1957\" data-end=\"2026\"\u003e\u003cstrong data-start=\"1957\" data-end=\"1974\"\u003eProduct Type:\u003c\/strong\u003e Pressure Washer Unloader Valve with Pressure Switch\u003c\/p\u003e\n\u003cp data-start=\"2028\" data-end=\"2059\"\u003e\u003cstrong data-start=\"2028\" data-end=\"2049\"\u003eMaximum Pressure:\u003c\/strong\u003e 3,625 PSI\u003c\/p\u003e\n\u003cp data-start=\"2061\" data-end=\"2089\"\u003e\u003cstrong data-start=\"2061\" data-end=\"2083\"\u003eMaximum Flow Rate:\u003c\/strong\u003e 8 GPM\u003c\/p\u003e\n\u003cp data-start=\"2091\" data-end=\"2121\"\u003e\u003cstrong data-start=\"2091\" data-end=\"2115\"\u003eMaximum Temperature:\u003c\/strong\u003e 176°F\u003c\/p\u003e\n\u003cp data-start=\"2123\" data-end=\"2153\"\u003e\u003cstrong data-start=\"2123\" data-end=\"2144\"\u003eInlet Connection:\u003c\/strong\u003e 3\/8\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2155\" data-end=\"2186\"\u003e\u003cstrong data-start=\"2155\" data-end=\"2177\"\u003eOutlet Connection:\u003c\/strong\u003e 3\/8\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2188\" data-end=\"2219\"\u003e\u003cstrong data-start=\"2188\" data-end=\"2210\"\u003eBypass Connection:\u003c\/strong\u003e 1\/4\" FPT\u003c\/p\u003e\n\u003cp data-start=\"2221\" data-end=\"2252\"\u003e\u003cstrong data-start=\"2221\" data-end=\"2241\"\u003ePressure Switch:\u003c\/strong\u003e Integrated\u003c\/p\u003e\n\u003cp data-start=\"2254\" data-end=\"2278\"\u003e\u003cstrong data-start=\"2254\" data-end=\"2274\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2280\" data-end=\"2283\"\u003e\n\u003ch2 data-section-id=\"1nv2y2h\" data-start=\"2285\" data-end=\"2317\"\u003ePressure Switch Functionality\u003c\/h2\u003e\n\u003cp data-start=\"2319\" data-end=\"2365\"\u003eThe integrated pressure switch is designed to:\u003c\/p\u003e\n\u003cul data-start=\"2367\" data-end=\"2577\"\u003e\n\u003cli data-section-id=\"5c9mbf\" data-start=\"2367\" data-end=\"2419\"\u003eSupport automatic pressure washer shutdown systems\u003c\/li\u003e\n\u003cli data-section-id=\"rtwjje\" data-start=\"2420\" data-end=\"2456\"\u003eReduce unnecessary motor operation\u003c\/li\u003e\n\u003cli data-section-id=\"hpy0tj\" data-start=\"2457\" data-end=\"2484\"\u003eImprove energy efficiency\u003c\/li\u003e\n\u003cli data-section-id=\"jga0u9\" data-start=\"2485\" data-end=\"2508\"\u003eHelp extend pump life\u003c\/li\u003e\n\u003cli data-section-id=\"1cejoo0\" data-start=\"2509\" data-end=\"2533\"\u003eEnhance system control\u003c\/li\u003e\n\u003cli data-section-id=\"t0lrdj\" data-start=\"2534\" data-end=\"2577\"\u003eReduce component wear during idle periods\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2579\" data-end=\"2694\"\u003eThis makes the ST-261-S a popular choice for professional pressure washers equipped with automatic control systems.\u003c\/p\u003e\n\u003chr data-start=\"2696\" data-end=\"2699\"\u003e\n\u003ch2 data-section-id=\"1kehdxb\" data-start=\"2701\" data-end=\"2731\"\u003eWhat an Unloader Valve Does\u003c\/h2\u003e\n\u003cp data-start=\"2733\" data-end=\"2760\"\u003eThe ST-261-S automatically:\u003c\/p\u003e\n\u003cul data-start=\"2762\" data-end=\"3002\"\u003e\n\u003cli data-section-id=\"1kamoqi\" data-start=\"2762\" data-end=\"2792\"\u003eRegulates operating pressure\u003c\/li\u003e\n\u003cli data-section-id=\"19xrhth\" data-start=\"2793\" data-end=\"2845\"\u003eDiverts water into bypass mode when spraying stops\u003c\/li\u003e\n\u003cli data-section-id=\"46qn36\" data-start=\"2846\" data-end=\"2883\"\u003ePrevents excessive pressure buildup\u003c\/li\u003e\n\u003cli data-section-id=\"1mjwh65\" data-start=\"2884\" data-end=\"2927\"\u003eProtects pumps, hoses, guns, and fittings\u003c\/li\u003e\n\u003cli data-section-id=\"k1xbb3\" data-start=\"2928\" data-end=\"2969\"\u003eMaintains consistent system performance\u003c\/li\u003e\n\u003cli data-section-id=\"1ekdxho\" data-start=\"2970\" data-end=\"3002\"\u003eExtends equipment service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3004\" data-end=\"3114\"\u003eWhen the spray gun trigger is released, water is redirected through the bypass circuit until spraying resumes.\u003c\/p\u003e\n\u003chr data-start=\"3116\" data-end=\"3119\"\u003e\n\u003ch2 data-section-id=\"vx2wyp\" data-start=\"3121\" data-end=\"3143\"\u003eCommon Applications\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1m7fp76\" data-start=\"3145\" data-end=\"3176\"\u003eCommercial Pressure Washing\u003c\/h3\u003e\n\u003cp data-start=\"3178\" data-end=\"3188\"\u003eIdeal for:\u003c\/p\u003e\n\u003cul data-start=\"3190\" data-end=\"3330\"\u003e\n\u003cli data-section-id=\"17aqqxb\" data-start=\"3190\" data-end=\"3221\"\u003eProfessional pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"i17fze\" data-start=\"3222\" data-end=\"3240\"\u003eMobile wash rigs\u003c\/li\u003e\n\u003cli data-section-id=\"sjf9mw\" data-start=\"3241\" data-end=\"3272\"\u003eContractor cleaning equipment\u003c\/li\u003e\n\u003cli data-section-id=\"1351n5w\" data-start=\"3273\" data-end=\"3303\"\u003eProperty maintenance systems\u003c\/li\u003e\n\u003cli data-section-id=\"ggeu2l\" data-start=\"3304\" data-end=\"3330\"\u003eFleet washing operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"3xqko4\" data-start=\"3332\" data-end=\"3355\"\u003eIndustrial Cleaning\u003c\/h3\u003e\n\u003cul data-start=\"3357\" data-end=\"3470\"\u003e\n\u003cli data-section-id=\"1i0u86j\" data-start=\"3357\" data-end=\"3383\"\u003eManufacturing facilities\u003c\/li\u003e\n\u003cli data-section-id=\"1e40zox\" data-start=\"3384\" data-end=\"3412\"\u003eEquipment cleaning systems\u003c\/li\u003e\n\u003cli data-section-id=\"mnwjdg\" data-start=\"3413\" data-end=\"3444\"\u003eIndustrial wash-down stations\u003c\/li\u003e\n\u003cli data-section-id=\"5l5kua\" data-start=\"3445\" data-end=\"3470\"\u003eMaintenance departments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"e23doq\" data-start=\"3472\" data-end=\"3501\"\u003eAutomatic Control Systems\u003c\/h3\u003e\n\u003cul data-start=\"3503\" data-end=\"3639\"\u003e\n\u003cli data-section-id=\"2adm2q\" data-start=\"3503\" data-end=\"3546\"\u003ePressure-switch operated pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"q8rjt7\" data-start=\"3547\" data-end=\"3575\"\u003eAutomatic shutdown systems\u003c\/li\u003e\n\u003cli data-section-id=\"fesgef\" data-start=\"3576\" data-end=\"3603\"\u003eElectric pressure washers\u003c\/li\u003e\n\u003cli data-section-id=\"15d9pci\" data-start=\"3604\" data-end=\"3639\"\u003eStationary cleaning installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3641\" data-end=\"3644\"\u003e\n\u003ch2 data-section-id=\"ctfpuh\" data-start=\"3646\" data-end=\"3669\"\u003ePerformance Benefits\u003c\/h2\u003e\n\u003cul data-start=\"3671\" data-end=\"3916\"\u003e\n\u003cli data-section-id=\"1bl7wox\" data-start=\"3671\" data-end=\"3701\"\u003eReliable pressure regulation\u003c\/li\u003e\n\u003cli data-section-id=\"705ixp\" data-start=\"3702\" data-end=\"3728\"\u003eEnhanced pump protection\u003c\/li\u003e\n\u003cli data-section-id=\"h7y6fc\" data-start=\"3729\" data-end=\"3750\"\u003eReduced system wear\u003c\/li\u003e\n\u003cli data-section-id=\"16a1kho\" data-start=\"3751\" data-end=\"3782\"\u003eImproved operating efficiency\u003c\/li\u003e\n\u003cli data-section-id=\"1gpagnp\" data-start=\"3783\" data-end=\"3816\"\u003eConsistent cleaning performance\u003c\/li\u003e\n\u003cli data-section-id=\"9je23e\" data-start=\"3817\" data-end=\"3854\"\u003eAutomatic pressure-switch operation\u003c\/li\u003e\n\u003cli data-section-id=\"1kjg8fj\" data-start=\"3855\" data-end=\"3884\"\u003eExtended equipment lifespan\u003c\/li\u003e\n\u003cli data-section-id=\"c81ntm\" data-start=\"3885\" data-end=\"3916\"\u003eProfessional-grade durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3918\" data-end=\"3921\"\u003e\n\u003ch2 data-section-id=\"x2tt67\" data-start=\"3923\" data-end=\"3967\"\u003eSigns an Unloader Valve Needs Replacement\u003c\/h2\u003e\n\u003cp data-start=\"3969\" data-end=\"4004\"\u003eReplace the unloader if you notice:\u003c\/p\u003e\n\u003cul data-start=\"4006\" data-end=\"4211\"\u003e\n\u003cli data-section-id=\"zta6im\" data-start=\"4006\" data-end=\"4029\"\u003ePressure fluctuations\u003c\/li\u003e\n\u003cli data-section-id=\"42aigf\" data-start=\"4030\" data-end=\"4051\"\u003ePump cycling issues\u003c\/li\u003e\n\u003cli data-section-id=\"nm4f1b\" data-start=\"4052\" data-end=\"4077\"\u003ePressure switch failure\u003c\/li\u003e\n\u003cli data-section-id=\"tfjehp\" data-start=\"4078\" data-end=\"4093\"\u003eWater leakage\u003c\/li\u003e\n\u003cli data-section-id=\"1lcacgl\" data-start=\"4094\" data-end=\"4124\"\u003eInconsistent pressure output\u003c\/li\u003e\n\u003cli data-section-id=\"uz2anl\" data-start=\"4125\" data-end=\"4148\"\u003eExcessive bypass flow\u003c\/li\u003e\n\u003cli data-section-id=\"op63ib\" data-start=\"4149\" data-end=\"4180\"\u003eDifficulty adjusting pressure\u003c\/li\u003e\n\u003cli data-section-id=\"1n1a9ox\" data-start=\"4181\" data-end=\"4211\"\u003eReduced cleaning performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4213\" data-end=\"4216\"\u003e\n\u003ch2 data-section-id=\"16dprsq\" data-start=\"4218\" data-end=\"4239\"\u003eInstallation Notes\u003c\/h2\u003e\n\u003col data-start=\"4241\" data-end=\"4652\"\u003e\n\u003cli data-section-id=\"1n541am\" data-start=\"4241\" data-end=\"4305\"\u003eTurn off the pressure washer and relieve all system pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"1t01cah\" data-start=\"4306\" data-end=\"4373\"\u003eVerify compatibility with your pump's pressure and flow ratings.\u003c\/li\u003e\n\u003cli data-section-id=\"1qqju8l\" data-start=\"4374\" data-end=\"4424\"\u003eInstall using the correct plumbing connections.\u003c\/li\u003e\n\u003cli data-section-id=\"1johtgz\" data-start=\"4425\" data-end=\"4497\"\u003eConnect pressure switch wiring according to equipment specifications.\u003c\/li\u003e\n\u003cli data-section-id=\"1bmxe0e\" data-start=\"4498\" data-end=\"4539\"\u003eAdjust operating pressure as required.\u003c\/li\u003e\n\u003cli data-section-id=\"uc45wx\" data-start=\"4540\" data-end=\"4574\"\u003eVerify proper bypass operation.\u003c\/li\u003e\n\u003cli data-section-id=\"4xhyl8\" data-start=\"4575\" data-end=\"4652\"\u003eTest pressure-switch functionality before returning the system to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp data-start=\"4654\" data-end=\"4786\"\u003e\u003cstrong data-start=\"4654\" data-end=\"4668\"\u003eImportant:\u003c\/strong\u003e Electrical connections should be installed according to manufacturer recommendations and applicable electrical codes.\u003c\/p\u003e\n\u003chr data-start=\"4788\" data-end=\"4791\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"4793\" data-end=\"4823\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"4825\" data-end=\"5121\"\u003e\n\u003cli data-section-id=\"93hsy7\" data-start=\"4825\" data-end=\"4874\"\u003eInspect the valve regularly for leaks and wear.\u003c\/li\u003e\n\u003cli data-section-id=\"1bk99f5\" data-start=\"4875\" data-end=\"4929\"\u003eVerify pressure settings during routine maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"pozbqt\" data-start=\"4930\" data-end=\"4977\"\u003eCheck pressure switch operation periodically.\u003c\/li\u003e\n\u003cli data-section-id=\"1yanzs2\" data-start=\"4978\" data-end=\"5019\"\u003eMaintain proper inlet water filtration.\u003c\/li\u003e\n\u003cli data-section-id=\"6nxwyt\" data-start=\"5020\" data-end=\"5080\"\u003eReplace worn seals and internal components when necessary.\u003c\/li\u003e\n\u003cli data-section-id=\"1pncogi\" data-start=\"5081\" data-end=\"5121\"\u003eFollow Suttner maintenance guidelines.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Suttner","offers":[{"title":"Default Title","offer_id":53428882145643,"sku":null,"price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/ST-261-SUNLOADER.webp?v=1782496959","url":"https:\/\/generalsprayers.com\/products\/st-261-s-pressure-washer-unloader-valve-with-pressure-switch-oem-replacement-part","provider":"GeneralSprayers","version":"1.0","type":"link"}