{"product_id":"general-pump-100556-compact-thermal-relief-valve-1-4-mpt-145-f","title":"General Pump 100556 Compact Thermal Relief Valve – 1\/4\" MPT, 145°F","description":"\u003cp\u003e\u003cstrong\u003eGeneral Pump 100556 Compact Thermal Relief Valve – 1\/4\" MPT, 145°F\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProtect your pressure washer pump from excessive heat with the \u003cstrong\u003eGeneral Pump 100556 Compact Thermal Relief Valve\u003c\/strong\u003e. Designed to activate when water temperature reaches approximately \u003cstrong\u003e145°F\u003c\/strong\u003e, this valve helps protect your pump from overheating when water is recirculating in bypass mode.\u003c\/p\u003e\n\u003cp\u003eIts compact design and \u003cstrong\u003e1\/4\" Male NPT connection\u003c\/strong\u003e make it an excellent replacement thermal relief valve for many commercial pressure washer pumps and plumbing systems.\u003c\/p\u003e\n\u003ch3\u003eSpecifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBrand:\u003c\/strong\u003e General Pump\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 100556\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eType:\u003c\/strong\u003e Thermal Relief Valve\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInlet:\u003c\/strong\u003e 1\/4\" Male NPT\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum Temperature:\u003c\/strong\u003e 145°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStyle:\u003c\/strong\u003e Compact\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCold water pressure washers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHot water pressure washers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCommercial cleaning equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePressure washer pump systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUnloader bypass systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eActivates at approximately 145°F\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1\/4\" Male NPT connection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompact design for installations with limited space\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHelps protect pressure washer pumps from excessive heat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAutomatically relieves overheated bypass water\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHelps extend pump seal and component life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGenuine General Pump component\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat it does:\u003c\/h3\u003e\n\u003cp\u003eWhen a pressure washer is running with the trigger gun closed, the unloader typically places the system into bypass and recirculates water through the pump. If the machine remains in bypass too long, the recirculating water can heat up rapidly.\u003c\/p\u003e\n\u003cp\u003eOnce the water temperature reaches approximately \u003cstrong\u003e145°F\u003c\/strong\u003e, the thermal relief valve opens and discharges the overheated water. Cooler incoming water can then enter the pump, helping reduce the internal temperature.\u003c\/p\u003e\n\u003ch3\u003eWhy it matters:\u003c\/h3\u003e\n\u003cp\u003eExcessive heat during bypass operation can cause:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDamaged pump seals and O-rings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePremature packing wear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReduced pump life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater leaks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCostly repairs and unnecessary downtime\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA thermal relief valve is a small and inexpensive component that can help prevent much more expensive pressure washer pump repairs.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eGeneral Pump 100556 Compact Thermal Relief Valve\u003c\/strong\u003e is an excellent replacement or preventative-maintenance part for pressure washers requiring a \u003cstrong\u003e1\/4\" MPT, 145°F thermal relief valve\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot sure whether your pressure washer requires the 1\/4\" or 3\/8\" version? Reach out—we'll help you get the right part the first time.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e","brand":"ST Sales","offers":[{"title":"Default Title","offer_id":43227317469282,"sku":"3596","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/9358\/files\/3597_01_web_2a89f8d0-92d3-42c9-bf3e-e1801a6b8042.webp?v=1787233658","url":"https:\/\/paintingequip.com\/products\/general-pump-100556-compact-thermal-relief-valve-1-4-mpt-145-f","provider":"ST Sales","version":"1.0","type":"link"}