{"title":"Thermal Relief Valves","description":"\u003ch2\u003eThermal Relief Valves for Hot Water Pressure Washers\u003c\/h2\u003e\n\n\u003cp\u003eProtect your hot water pressure washer from thermal damage with professional thermal relief valves designed to release overheated water when the trigger gun is closed. Our selection includes General Pump compact thermal relief valves in multiple sizes and temperature ratings for various pressure washer configurations.\u003c\/p\u003e\n\n\u003ch3\u003eGeneral Pump Compact Thermal Relief Valves\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/2\" MPT 145°F Thermal Relief Valve:\u003c\/strong\u003e General Pump compact valve for 1\/2\" connections, opens at 145°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\/8\" MPT 145°F Thermal Relief Valve:\u003c\/strong\u003e GP compact valve for 3\/8\" connections, opens at 145°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4\" MPT 124°F Thermal Relief Valve:\u003c\/strong\u003e GP compact valve for 1\/4\" connections, opens at 124°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\/8\" Thermal Relief Valve:\u003c\/strong\u003e Standard 3\/8\" thermal relief valve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4\" GP Thermal Relief Valve:\u003c\/strong\u003e General Pump 1\/4\" thermal relief valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Thermal Relief Valves Are Essential\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrevent Pump Damage:\u003c\/strong\u003e Release superheated water before it damages pump seals and components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtend Equipment Life:\u003c\/strong\u003e Protect pumps from thermal stress during bypass operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Protection:\u003c\/strong\u003e Prevent dangerous pressure buildup from thermal expansion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRequired Component:\u003c\/strong\u003e Essential safety device for all hot water pressure washers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Operation:\u003c\/strong\u003e Opens automatically when water temperature exceeds rating\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow Thermal Relief Valves Work\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBypass Protection:\u003c\/strong\u003e When trigger gun is closed, water recirculates through pump and heats up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Sensing:\u003c\/strong\u003e Valve monitors water temperature continuously\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Release:\u003c\/strong\u003e Opens at preset temperature (124°F or 145°F) to dump hot water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Relief:\u003c\/strong\u003e Releases water to prevent thermal expansion pressure buildup\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Reset:\u003c\/strong\u003e Closes when temperature drops below activation point\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eChoosing the Right Thermal Relief Valve\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Size:\u003c\/strong\u003e Match valve thread size to your pressure washer plumbing (1\/4\", 3\/8\", or 1\/2\" MPT)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Rating:\u003c\/strong\u003e 124°F for lower temperature protection, 145°F for standard hot water applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e General Pump compact valves save space in tight installations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Specs:\u003c\/strong\u003e Follow pressure washer manufacturer recommendations for valve specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation \u0026amp; Maintenance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProper Location:\u003c\/strong\u003e Install thermal relief valve on pump outlet or high-pressure line\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge Routing:\u003c\/strong\u003e Route discharge away from operator and equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegular Testing:\u003c\/strong\u003e Test valve operation periodically to ensure proper function\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace When Faulty:\u003c\/strong\u003e Replace valves that leak, stick, or fail to open at proper temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Sealant:\u003c\/strong\u003e Use appropriate thread sealant for leak-free installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSigns Your Thermal Relief Valve Needs Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstant Dripping:\u003c\/strong\u003e Valve leaks continuously even when water is cool\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFails to Open:\u003c\/strong\u003e Water temperature exceeds rating but valve doesn't release\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStuck Open:\u003c\/strong\u003e Valve remains open and won't close after cooling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion or Damage:\u003c\/strong\u003e Visible corrosion, cracks, or physical damage to valve body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump Overheating:\u003c\/strong\u003e Pump runs excessively hot during bypass operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWhether you're replacing a failed thermal relief valve or installing a new hot water pressure washer, thermal relief valves are essential safety components that protect your equipment from thermal damage. General Pump compact thermal relief valves deliver reliable performance in multiple sizes and temperature ratings to match your pressure washer specifications. Every valve is designed to automatically release superheated water before it damages pump seals and components, extending equipment life and ensuring safe operation.\u003c\/p\u003e\n\n\u003cp\u003eNeed other pressure washer parts? Browse our \u003ca href=\"\/collections\/unloader-valves\" title=\"Unloader Valves\"\u003eunloader valves\u003c\/a\u003e, \u003ca href=\"\/collections\/pump-parts\" title=\"Pump Parts\"\u003epump parts\u003c\/a\u003e, \u003ca href=\"\/collections\/pressure-switches\" title=\"Pressure Switches\"\u003epressure switches\u003c\/a\u003e, and \u003ca href=\"\/collections\/all-products\" title=\"All Products\"\u003ecomplete product catalog\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"1-4-gp-thermal-relief-valve","title":"1\/4\" GP Thermal Relief Valve","description":"\u003cp\u003e1\/4\" GP Thermal Relief Valve\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":55854568144969,"sku":"100556","price":12.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/3487\/5465\/files\/a8bfaf_3b4a80120e9143538b574f62325afc91_mv2.webp?v=1785346432"},{"product_id":"3-8-thermal-relief-valve","title":"3\/8 Thermal Relief Valve","description":"\u003cp\u003e3\/8 Thermal Relief Valve\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":55854615035977,"sku":"758-613","price":10.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/3487\/5465\/files\/thermal.webp?v=1785347552"},{"product_id":"gp-compact-1-2-mpt-145f-thermal-relief","title":"1\/2MPT Thermal Relief Valve 145F General Pump Compact","description":"\u003cp\u003e1\/2MPT Thermal Relief Valve 145F General Pump Compact\u003c\/p\u003e\u003cp\u003eGP COMPACT 1\/2 MPT 145F THERMAL RELIEF\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":55854673231945,"sku":"100558","price":12.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/3487\/5465\/files\/file_0be9a72b-bab1-43fb-9fef-238b09482dbc.jpg?v=1785348767"},{"product_id":"gp-compact-1-4-mpt-145f-thermal-relief","title":"1\/4MPT 124F Thermal Relief Valve GP Compact","description":"\u003cp\u003eGP COMPACT 1\/4 MPT 145F THERMAL RELIEF Valve\u003c\/p\u003e\u003cp\u003eGeneral Pump Compact\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":55854673395785,"sku":"20.0069","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/3487\/5465\/files\/file_9c5ade61-72a9-43f7-8c3b-ca99a03746c3.jpg?v=1785348778"},{"product_id":"gp-compact-3-8-mpt-145f-thermal-relief","title":"3\/8MPT 145F Thermal Relief Valve GP Compact","description":"\u003cp\u003eGP COMPACT 3\/8 MPT 145F THERMAL RELIEF Valve\u003c\/p\u003e\u003cp\u003eGeneral Pump Compact\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":55854673657929,"sku":"100557","price":13.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/3487\/5465\/files\/file_c1206385-0ceb-4cc4-acec-1898062a4842.jpg?v=1785348789"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/3487\/5465\/collections\/file_c1206385-0ceb-4cc4-acec-1898062a4842.jpg?v=1783988618","url":"https:\/\/thewashingstore.com\/collections\/thermal-relief-valves.oembed","provider":"The Washing Store","version":"1.0","type":"link"}