{"product_id":"suttner-thermal-relief-3-8-mpt-140-deg","title":"Suttner Thermal Relief 3\/8\" MPT 140 Deg.","description":"\u003cdiv class=\"sbs-content\"\u003e\n\u003cdiv class=\"sbs-badges\"\u003e\n\u003cspan class=\"sbs-badge\"\u003e\u003cspan class=\"sbs-badge__label\"\u003eSize\u003c\/span\u003e 3\/8\"\u003c\/span\u003e\u003cspan class=\"sbs-badge\"\u003e\u003cspan class=\"sbs-badge__label\"\u003eThread\u003c\/span\u003e MPT\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-svc-banner sbs-svc-banner--service\"\u003e\n\u003cspan class=\"sbs-svc-banner__icon\"\u003e🔧\u003c\/span\u003e\u003cdiv class=\"sbs-svc-banner__body\"\u003e\n\u003cdiv class=\"sbs-svc-banner__title\"\u003eCommonly Used For: Protecting Pumps From Bypass Heat\u003c\/div\u003e\n\u003cdiv class=\"sbs-svc-banner__desc\"\u003eSuttner thermal relief valve with a 3\/8\" MPT thread that dumps water at 140 degrees.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eSuttner Thermal Relief Valve 3\/8\" MPT - Dumps Hot Water Before It Cooks Your Pump\u003c\/h2\u003e\n\u003cp\u003eThis Suttner thermal relief valve threads into your pump with a 3\/8\" MPT connection and opens at 140 degrees. When the machine sits in bypass with the trigger off, the water recirculating in the pump keeps getting hotter. This valve dumps that hot water and pulls in cool water before the heat gets to your seals. In stock at Sun Brite Supply in Gaithersburg, MD.\u003c\/p\u003e\n\u003cp\u003eCooked pump seals are one of the most common failures we see, and most of the time it happens while the rig idles in bypass between spray downs. A thermal relief valve is cheap insurance compared to a pump rebuild. Suttner has earned a reputation among working contractors for building equipment that holds up under daily use. Match the 3\/8\" MPT thread to your pump port and you're set.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\u003ch2\u003eWhere Contractors Use This Thermal Relief Valve\u003c\/h2\u003e\u003c\/div\u003e\n\u003cdiv class=\"sbs-cards sbs-cards--2col\"\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e🔧\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003eBypass Heat Protection\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eDumps overheated bypass water at 140 degrees so pump seals survive idle time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e🏢\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003ePump Head Plumbing\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eThreads into the 3\/8\" MPT relief port on the pump head or manifold.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e📦\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003eIn-Stock Ready\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eShips within 24 hours from our Gaithersburg, MD warehouse.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-card\"\u003e\n\u003cspan class=\"sbs-card__icon\"\u003e☎️\u003c\/span\u003e\u003cdiv class=\"sbs-card__title\"\u003eSeasonal Service\u003c\/div\u003e\n\u003cdiv class=\"sbs-card__desc\"\u003eSwap a crusted or dripping relief valve during spring service before it fails.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eApplication and Compatibility\u003c\/h2\u003e\n\u003cp\u003eThis component integrates into standard commercial pressure washing systems using industry-standard connections. Verify the specifications listed below against your existing equipment before ordering. Thread sizes, pressure ratings, and flow capacities must match your system for safe, leak-free operation. If you're not sure about compatibility, call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e - we match parts to machines every day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eContractor-Grade Quality\u003c\/h2\u003e\n\u003cp\u003eThere's a real difference between professional equipment and consumer-grade alternatives sold at hardware stores. Consumer parts are built to a price point - they work fine for the homeowner who pressure washes their deck once a year. But put those same parts on a commercial rig running 8 hours a day, 5 days a week, and they fail fast. This pressure washer part is built for that daily grind. The materials, tolerances, and construction are designed for thousands of hours of commercial operation. That's why contractors come to Sun Brite Supply instead of buying online from unknown vendors - we carry the brands and specs that working professionals trust.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-steps\"\u003e\n\u003ch2\u003eInstallation and Setup\u003c\/h2\u003e\n\u003cdiv class=\"sbs-step\"\u003e\n\u003cdiv class=\"sbs-step__num\"\u003e1\u003c\/div\u003e\n\u003cdiv class=\"sbs-step__body\"\u003e\n\u003ch4\u003eVerify Compatibility\u003c\/h4\u003e\n\u003cp\u003eCheck the specifications against your existing equipment. Thread sizes, pressure ratings, and flow capacities must match for safe operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-step\"\u003e\n\u003cdiv class=\"sbs-step__num\"\u003e2\u003c\/div\u003e\n\u003cdiv class=\"sbs-step__body\"\u003e\n\u003ch4\u003eInstall According to Specs\u003c\/h4\u003e\n\u003cp\u003eFollow the manufacturer's installation guidelines. Use appropriate thread sealant on pipe connections. Don't overtighten fittings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-step\"\u003e\n\u003cdiv class=\"sbs-step__num\"\u003e3\u003c\/div\u003e\n\u003cdiv class=\"sbs-step__body\"\u003e\n\u003ch4\u003eTest Under Pressure\u003c\/h4\u003e\n\u003cp\u003eAfter installation, test at low pressure first. Check all connections for leaks before running at full operating pressure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-callout sbs-callout--tip\"\u003e\n\u003cspan class=\"sbs-callout__icon\"\u003e💡\u003c\/span\u003e\u003cdiv class=\"sbs-callout__text\"\u003e\n\u003cstrong\u003ePro Tip:\u003c\/strong\u003e Keep spare parts on your rig. The cost of downtime on a commercial job always exceeds the cost of carrying a few critical replacement components.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-callout sbs-callout--warning\"\u003e\n\u003cspan class=\"sbs-callout__icon\"\u003e⚠️\u003c\/span\u003e\u003cdiv class=\"sbs-callout__text\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Always verify pressure ratings, thread sizes, and flow specifications match your existing system before installation. Using components rated below your machine's operating pressure creates a safety hazard. When in doubt, call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e before ordering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-compat\"\u003e\n\u003ch3\u003eCompatible With\u003c\/h3\u003e\n\u003cdiv class=\"sbs-compat__grid\"\u003e\n\u003cspan class=\"sbs-compat__tag\"\u003e3\/8\" MPT Pump Ports\u003c\/span\u003e\u003cspan class=\"sbs-compat__tag\"\u003eGas and Electric Pressure Washers\u003c\/span\u003e\u003cspan class=\"sbs-compat__tag\"\u003eBypass Loop Plumbing\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-table-wrap\"\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"sbs-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eSuttner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eThermal Relief Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection Size\u003c\/td\u003e\n\u003ctd\u003e3\/8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Type\u003c\/td\u003e\n\u003ctd\u003eMPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShips From\u003c\/td\u003e\n\u003ctd\u003eGaithersburg, MD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eMaintenance and Troubleshooting\u003c\/h2\u003e\n\u003cp\u003eInspect this component during your regular maintenance routine. Check for wear, leaks, corrosion, and proper operation. Replacing worn parts on schedule prevents mid-job failures that cost you time and money.\u003c\/p\u003e\n\u003ch3\u003eWhen to Replace vs. Repair\u003c\/h3\u003e\n\u003cp\u003eIf this pressure washer part shows signs of wear but is still functional, a rebuild kit or replacement seals may extend its service life at a fraction of the full replacement cost. However, if you see cracks, cross-threading, severe corrosion, or complete failure under pressure, replacement is the safer and more economical choice. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e and we'll help you decide. Always follow \u003ca href=\"https:\/\/www.osha.gov\/pressure-washing\" rel=\"noopener\" target=\"_blank\"\u003eOSHA equipment safety standards\u003c\/a\u003e when working with high-pressure equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eWhat is this thermal relief valve used for?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eIt protects your pump from heat damage. When the machine runs in bypass with the trigger off, water recirculates and heats up fast. At 140 degrees this valve opens, dumps the hot water, and lets cooler water in so the seals and packings don't cook.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eIs this pressure washer part compatible with my pressure washer?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eCheck the specifications above against your machine's requirements. Thread sizes, pressure ratings, and flow capacities must match. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e if you need help with fitment.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eHow quickly do you ship orders?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eIn-stock items ship within 24 hours from our Gaithersburg, MD warehouse. Local customers can arrange same-day counter pickup. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e to confirm availability and get a shipping estimate.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__item\"\u003e\n\u003cdiv class=\"sbs-faq__q\"\u003eWhat is your return policy?\u003c\/div\u003e\n\u003cdiv class=\"sbs-faq__a\"\u003eUnopened and unused items can be returned within 30 days for store credit. If something arrives damaged or isn't what you expected, call us at \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e and we'll make it right.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-cta\"\u003e\n\u003cdiv class=\"sbs-cta__text\"\u003e\n\u003ch3\u003eNeed Help Choosing the Right Part?\u003c\/h3\u003e\n\u003cp\u003e30+ years of industry experience. We match parts to machines every day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ca href=\"tel:+13015199274\" class=\"sbs-cta__phone\"\u003e☎ (301) 519-9274\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-related\"\u003e\n\u003ca href=\"\/collections\/all\"\u003eShop All Products\u003cspan\u003eBrowse Collection →\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/collections\/fittings\"\u003eFittings\u003cspan\u003eBrowse Collection →\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/collections\/accessories\"\u003eAccessories\u003cspan\u003eBrowse Collection →\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-section\"\u003e\n\u003ch2\u003eWhy Buy From Sun Brite Supply?\u003c\/h2\u003e\n\u003cp\u003eSun Brite Supply has served pressure washing contractors from our Gaithersburg, MD location since 2011. We stock the professional-grade parts and equipment you won't find at big box stores. Every in-stock order ships within 24 hours. Local customers can pick up the same day. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e and talk to someone who knows this equipment - not a call center.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sbs-callout sbs-callout--info\"\u003e\n\u003cspan class=\"sbs-callout__icon\"\u003e📦\u003c\/span\u003e\u003cdiv class=\"sbs-callout__text\"\u003e\n\u003cstrong\u003eShipping \u0026amp; Returns:\u003c\/strong\u003e In-stock items ship within 24 hours from Gaithersburg, MD. Same-day counter pickup for local contractors. Unopened items may be returned within 30 days for store credit. Call \u003ca href=\"tel:+13015199274\"\u003e(301) 519-9274\u003c\/a\u003e with questions.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sun Brite Supply","offers":[{"title":"Default Title","offer_id":45032499708104,"sku":"4963","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0517\/4827\/4376\/files\/04963_aa4d88e4-e59c-41ed-bd04-882840b1e1ed.webp?v=1774231573","url":"https:\/\/sunbritesupplymd.com\/products\/suttner-thermal-relief-3-8-mpt-140-deg","provider":"Sun Brite Supply","version":"1.0","type":"link"}