{"product_id":"general-pump-compact-thermal-relief-valve-3-8-mpt-145-f-oem-replacement-part","title":"General Pump Compact Thermal Relief Valve 3\/8\" MPT 145°F – OEM Replacement Part","description":"\u003cdiv class=\"\" data-turn-id-container=\"985700c4-6f9b-4739-a6e3-6f4978f34592\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-(--header-height)\" dir=\"auto\" data-turn-id=\"985700c4-6f9b-4739-a6e3-6f4978f34592\" data-turn-id-container=\"985700c4-6f9b-4739-a6e3-6f4978f34592\" data-testid=\"conversation-turn-105\" data-scroll-anchor=\"false\" data-turn=\"user\"\u003e\u003c\/section\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a1de47a-ac80-83ea-becb-b7236e9b681a-12\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a1de47a-ac80-83ea-becb-b7236e9b681a-12\" data-turn-id-container=\"request-6a1de47a-ac80-83ea-becb-b7236e9b681a-12\" data-testid=\"conversation-turn-106\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"9b3aeac3-0dba-4790-9ca6-a863b7f15240\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"165\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 100557\u003cbr data-start=\"23\" data-end=\"26\"\u003e\u003cstrong data-start=\"26\" data-end=\"39\"\u003eCategory:\u003c\/strong\u003e Pressure Washer Components → Thermal Relief Valves → General Pump Parts\u003cbr data-start=\"111\" data-end=\"114\"\u003e\u003cstrong data-start=\"114\" data-end=\"123\"\u003eType:\u003c\/strong\u003e General Pump Compact Thermal Relief Valve\u003c\/p\u003e\n\u003chr data-start=\"167\" data-end=\"170\"\u003e\n\u003cp data-start=\"255\" data-end=\"720\"\u003eThe General Pump Compact Thermal Relief Valve (Part #100557) is a genuine OEM safety component designed to protect pressure washer and softwash pumps from overheating during bypass and idle operation. Engineered to automatically activate at approximately \u003cstrong data-start=\"510\" data-end=\"519\"\u003e145°F\u003c\/strong\u003e, this thermal relief valve releases overheated water and allows cooler incoming water to enter the system, helping prevent costly damage to seals, packings, valves, and other critical pump components.\u003c\/p\u003e\n\u003chr data-start=\"1481\" data-end=\"1484\"\u003e\n\u003ch2 data-section-id=\"939trr\" data-start=\"1486\" data-end=\"1512\"\u003eKey Features \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul data-start=\"1514\" data-end=\"2028\"\u003e\n\u003cli data-section-id=\"1nbcrsj\" data-start=\"1514\" data-end=\"1557\"\u003eGenuine General Pump OEM Replacement Part\u003c\/li\u003e\n\u003cli data-section-id=\"16qosqv\" data-start=\"1558\" data-end=\"1615\"\u003eProtects pumps from overheating during bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"1qvdbu9\" data-start=\"1616\" data-end=\"1664\"\u003eAutomatically activates at approximately 145°F\u003c\/li\u003e\n\u003cli data-section-id=\"3ff83k\" data-start=\"1665\" data-end=\"1710\"\u003eAutomatic reset functionality after cooling\u003c\/li\u003e\n\u003cli data-section-id=\"tpsg6y\" data-start=\"1711\" data-end=\"1772\"\u003eDurable brass body with stainless steel internal components\u003c\/li\u003e\n\u003cli data-section-id=\"oypo76\" data-start=\"1773\" data-end=\"1827\"\u003eCompact design for easy installation in tight spaces\u003c\/li\u003e\n\u003cli data-section-id=\"q450sw\" data-start=\"1828\" data-end=\"1878\"\u003eHelps prevent premature seal and packing failure\u003c\/li\u003e\n\u003cli data-section-id=\"6dqknq\" data-start=\"1879\" data-end=\"1931\"\u003eReduces pump wear caused by excessive heat buildup\u003c\/li\u003e\n\u003cli data-section-id=\"per3k3\" data-start=\"1932\" data-end=\"1983\"\u003eSuitable for softwash and pressure washer systems\u003c\/li\u003e\n\u003cli data-section-id=\"vdwt5\" data-start=\"1984\" data-end=\"2028\"\u003eImproves pump reliability and service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2030\" data-end=\"2033\"\u003e\n\u003ch2 data-section-id=\"1cgu054\" data-start=\"2035\" data-end=\"2062\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cp data-start=\"2064\" data-end=\"2094\"\u003e\u003cstrong data-start=\"2064\" data-end=\"2081\"\u003eManufacturer:\u003c\/strong\u003e General Pump\u003c\/p\u003e\n\u003cp data-start=\"2096\" data-end=\"2119\"\u003e\u003cstrong data-start=\"2096\" data-end=\"2112\"\u003ePart Number:\u003c\/strong\u003e 100557\u003c\/p\u003e\n\u003cp data-start=\"2121\" data-end=\"2159\"\u003e\u003cstrong data-start=\"2121\" data-end=\"2138\"\u003eProduct Type:\u003c\/strong\u003e Thermal Relief Valve\u003c\/p\u003e\n\u003cp data-start=\"2161\" data-end=\"2190\"\u003e\u003cstrong data-start=\"2161\" data-end=\"2181\"\u003eConnection Size:\u003c\/strong\u003e 3\/8\" MPT\u003c\/p\u003e\n\u003cp data-start=\"2192\" data-end=\"2235\"\u003e\u003cstrong data-start=\"2192\" data-end=\"2212\"\u003eConnection Type:\u003c\/strong\u003e Male Pipe Thread (MPT)\u003c\/p\u003e\n\u003cp data-start=\"2237\" data-end=\"2277\"\u003e\u003cstrong data-start=\"2237\" data-end=\"2264\"\u003eActivation Temperature:\u003c\/strong\u003e 145°F (±5°F)\u003c\/p\u003e\n\u003cp data-start=\"2279\" data-end=\"2334\"\u003e\u003cstrong data-start=\"2279\" data-end=\"2300\"\u003eMaximum Pressure:\u003c\/strong\u003e Up to 4000 PSI (system dependent)\u003c\/p\u003e\n\u003cp data-start=\"2336\" data-end=\"2360\"\u003e\u003cstrong data-start=\"2336\" data-end=\"2354\"\u003eBody Material:\u003c\/strong\u003e Brass\u003c\/p\u003e\n\u003cp data-start=\"2362\" data-end=\"2402\"\u003e\u003cstrong data-start=\"2362\" data-end=\"2386\"\u003eInternal Components:\u003c\/strong\u003e Stainless Steel\u003c\/p\u003e\n\u003cp data-start=\"2404\" data-end=\"2435\"\u003e\u003cstrong data-start=\"2404\" data-end=\"2419\"\u003eReset Type:\u003c\/strong\u003e Automatic Reset\u003c\/p\u003e\n\u003cp data-start=\"2437\" data-end=\"2478\"\u003e\u003cstrong data-start=\"2437\" data-end=\"2453\"\u003eApplication:\u003c\/strong\u003e Pump Overheat Protection\u003c\/p\u003e\n\u003cp data-start=\"2480\" data-end=\"2504\"\u003e\u003cstrong data-start=\"2480\" data-end=\"2500\"\u003eOEM Replacement:\u003c\/strong\u003e Yes\u003c\/p\u003e\n\u003chr data-start=\"2506\" data-end=\"2509\"\u003e\n\u003ch2 data-section-id=\"164os46\" data-start=\"2511\" data-end=\"2534\"\u003eTypical Applications\u003c\/h2\u003e\n\u003cul data-start=\"2536\" data-end=\"2757\"\u003e\n\u003cli data-section-id=\"1z0el29\" data-start=\"2536\" data-end=\"2561\"\u003ePressure washer systems\u003c\/li\u003e\n\u003cli data-section-id=\"a7gd8d\" data-start=\"2562\" data-end=\"2580\"\u003eSoftwash systems\u003c\/li\u003e\n\u003cli data-section-id=\"tu2yfp\" data-start=\"2581\" data-end=\"2600\"\u003ePump bypass loops\u003c\/li\u003e\n\u003cli data-section-id=\"17ccjri\" data-start=\"2601\" data-end=\"2631\"\u003eHigh-flow pump installations\u003c\/li\u003e\n\u003cli data-section-id=\"1oa2tqu\" data-start=\"2632\" data-end=\"2671\"\u003eCommercial pressure washing equipment\u003c\/li\u003e\n\u003cli data-section-id=\"16ga20s\" data-start=\"2672\" data-end=\"2701\"\u003eIndustrial cleaning systems\u003c\/li\u003e\n\u003cli data-section-id=\"i17fze\" data-start=\"2702\" data-end=\"2720\"\u003eMobile wash rigs\u003c\/li\u003e\n\u003cli data-section-id=\"1ih394i\" data-start=\"2721\" data-end=\"2757\"\u003ePump protection and safety systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2759\" data-end=\"2762\"\u003e\n\u003ch2 data-section-id=\"7zbpd1\" data-start=\"2764\" data-end=\"2789\"\u003ePerformance Advantages\u003c\/h2\u003e\n\u003cul data-start=\"2791\" data-end=\"3279\"\u003e\n\u003cli data-section-id=\"1bmdpll\" data-start=\"2791\" data-end=\"2846\"\u003eAutomatically protects pumps from heat-related damage\u003c\/li\u003e\n\u003cli data-section-id=\"1garm54\" data-start=\"2847\" data-end=\"2902\"\u003ePrevents overheating during extended bypass operation\u003c\/li\u003e\n\u003cli data-section-id=\"1o6fzet\" data-start=\"2903\" data-end=\"2951\"\u003eExtends seal, packing, and pump component life\u003c\/li\u003e\n\u003cli data-section-id=\"kjtol5\" data-start=\"2952\" data-end=\"2995\"\u003eHelps reduce maintenance and repair costs\u003c\/li\u003e\n\u003cli data-section-id=\"1890frp\" data-start=\"2996\" data-end=\"3055\"\u003eAutomatic reset operation requires no manual intervention\u003c\/li\u003e\n\u003cli data-section-id=\"3js1oa\" data-start=\"3056\" data-end=\"3096\"\u003eCompact design simplifies installation\u003c\/li\u003e\n\u003cli data-section-id=\"1aeavrx\" data-start=\"3097\" data-end=\"3171\"\u003eDurable brass and stainless steel construction ensures long service life\u003c\/li\u003e\n\u003cli data-section-id=\"12xf3jg\" data-start=\"3172\" data-end=\"3220\"\u003eImproves overall system reliability and safety\u003c\/li\u003e\n\u003cli data-section-id=\"7zqk3p\" data-start=\"3221\" data-end=\"3279\"\u003eIdeal for commercial and professional cleaning equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3281\" data-end=\"3284\"\u003e\n\u003ch2 data-section-id=\"1se1dcn\" data-start=\"3286\" data-end=\"3311\"\u003eInstallation Locations\u003c\/h2\u003e\n\u003cp data-start=\"3313\" data-end=\"3378\"\u003eThe General Pump 100557 Thermal Relief Valve can be installed in:\u003c\/p\u003e\n\u003cul data-start=\"3380\" data-end=\"3522\"\u003e\n\u003cli data-section-id=\"1lmpzrk\" data-start=\"3380\" data-end=\"3401\"\u003ePump manifold ports\u003c\/li\u003e\n\u003cli data-section-id=\"xjezbf\" data-start=\"3402\" data-end=\"3425\"\u003eBypass plumbing loops\u003c\/li\u003e\n\u003cli data-section-id=\"1k65all\" data-start=\"3426\" data-end=\"3452\"\u003eInlet water supply lines\u003c\/li\u003e\n\u003cli data-section-id=\"1ojgih4\" data-start=\"3453\" data-end=\"3479\"\u003eSoftwash system plumbing\u003c\/li\u003e\n\u003cli data-section-id=\"vbtmdo\" data-start=\"3480\" data-end=\"3522\"\u003ePressure washer pump protection circuits\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3524\" data-end=\"3603\"\u003eAlways follow equipment manufacturer recommendations for installation location.\u003c\/p\u003e\n\u003chr data-start=\"3605\" data-end=\"3608\"\u003e\n\u003ch2 data-section-id=\"8fimbm\" data-start=\"3610\" data-end=\"3640\"\u003eMaintenance Recommendations\u003c\/h2\u003e\n\u003cul data-start=\"3642\" data-end=\"4024\"\u003e\n\u003cli data-section-id=\"z9lggh\" data-start=\"3642\" data-end=\"3710\"\u003eInspect the thermal relief valve periodically for leaks or damage.\u003c\/li\u003e\n\u003cli data-section-id=\"14cf5hy\" data-start=\"3711\" data-end=\"3787\"\u003eVerify proper activation and reset operation during maintenance intervals.\u003c\/li\u003e\n\u003cli data-section-id=\"t0cjhn\" data-start=\"3788\" data-end=\"3848\"\u003eReplace valves showing signs of wear or improper function.\u003c\/li\u003e\n\u003cli data-section-id=\"18e6k5t\" data-start=\"3849\" data-end=\"3899\"\u003eEnsure adequate water supply to the pump system.\u003c\/li\u003e\n\u003cli data-section-id=\"2xs202\" data-start=\"3900\" data-end=\"3946\"\u003eFollow General Pump installation guidelines.\u003c\/li\u003e\n\u003cli data-section-id=\"174fgu7\" data-start=\"3947\" data-end=\"4024\"\u003eUse only genuine OEM replacement components to maintain proper performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"General Pump","offers":[{"title":"Default Title","offer_id":53334172139883,"sku":"100557","price":12.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/100557GP.jpg?v=1780430041","url":"https:\/\/generalsprayers.com\/products\/general-pump-compact-thermal-relief-valve-3-8-mpt-145-f-oem-replacement-part","provider":"GeneralSprayers","version":"1.0","type":"link"}