{"product_id":"general-pump-100558-compact-thermal-relief-valve-1-2-mpt-145-f-for-pressure-washers","title":"General Pump 100558 Compact Thermal Relief Valve – 1\/2\" MPT, 145°F for Pressure Washers","description":"\u003cp\u003e\u003cstrong\u003eGeneral Pump 100558 Compact Thermal Relief Valve – 1\/2\" MPT, 145°F for Pressure Washers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProtect your pressure washer pump from excessive heat with the \u003cstrong\u003eGeneral Pump 100558 Compact Thermal Relief Valve\u003c\/strong\u003e. Featuring a \u003cstrong\u003e1\/2\" Male NPT connection\u003c\/strong\u003e and a \u003cstrong\u003e145°F temperature rating\u003c\/strong\u003e, this valve provides automatic protection against overheated water during bypass operation.\u003c\/p\u003e\n\u003cp\u003eIts compact design makes it an excellent replacement for pressure washer systems requiring a larger 1\/2\" connection without taking up unnecessary space.\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 100558\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\/2\" 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\/2\" Male NPT connection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompact design for easy installation\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 protect pump seals, packings, and O-rings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHelps extend pressure washer pump 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 may place the pump into bypass and recirculate water. If the machine remains in bypass too long, the recirculating water can quickly become hot enough to damage seals and other internal pump components.\u003c\/p\u003e\n\u003cp\u003eWhen the water reaches approximately \u003cstrong\u003e145°F\u003c\/strong\u003e, the thermal relief valve opens and releases the overheated water. This allows cooler incoming water to enter the pump and helps bring the internal temperature back down.\u003c\/p\u003e\n\u003ch3\u003eWhy it matters:\u003c\/h3\u003e\n\u003cp\u003eExcessive heat during bypass operation can contribute to:\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\u003eWater leaks\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\u003eCostly repairs and downtime\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA thermal relief valve is a small, inexpensive component that can help prevent much more expensive pressure washer pump repairs.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eGeneral Pump 100558 Compact Thermal Relief Valve\u003c\/strong\u003e is an excellent replacement or preventative-maintenance part for pressure washers requiring a \u003cstrong\u003e1\/2\" 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\", 3\/8\", or 1\/2\" 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":43227320713314,"sku":"3598","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0915\/9358\/files\/3598_01_web_d4da5deb-b0e4-46e5-8479-173f9ac0eea9.webp?v=1787234197","url":"https:\/\/paintingequip.com\/products\/general-pump-100558-compact-thermal-relief-valve-1-2-mpt-145-f-for-pressure-washers","provider":"ST Sales","version":"1.0","type":"link"}