{"product_id":"camco-10473-3-4-t-p-water-heater-relief-valve","title":"Camco 10473 3\/4\" T\u0026P Water Heater Relief Valve","description":"\u003cp class=\"nvn-hero\"\u003eThe Camco 10473 is the temperature and pressure relief valve that keeps your water heater safe. It's factory set to vent at 150 PSI and 210 degrees Fahrenheit, threads into a standard 3\/4-inch NPT port, and reaches 4 inches into the tank with an epoxy-coated probe. Brass body, stainless spring, no gaskets to weep. CSA certified and ready to drop in.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Camco 10473 is a temperature and pressure relief valve, the safety valve that sits on your water heater and keeps a bad day from turning into a dangerous one. Every tank-style water heater needs one. When the water inside gets too hot or the pressure climbs too high, this valve opens and vents before anything ruptures. It's a small brass part doing one of the most important jobs on your rig or your boat.\u003c\/p\u003e\n\u003cp\u003eThis one is factory set to open at 150 PSI and 210 degrees Fahrenheit. Those aren't numbers you adjust. They're built in at the factory and CSA certified to ANSI Z21.22, the standard that covers relief valves on water heating equipment. So when you thread this in, you know it's going to relieve at the right point every time. No guessing, no calibration, no fiddling.\u003c\/p\u003e\n\u003cp\u003eThe connection is a 3\/4 inch NPT thread, the common size on RV and marine water heaters. The probe reaches 4 inches into the tank so it's actually sensing the water temperature, not just the air near the fitting. The shank measures 1 3\/16 inches. If your old valve is a 3\/4 inch NPT unit, this one drops right into the same port.\u003c\/p\u003e\n\u003cp\u003eWhat makes it last is the build. The body is brass, the pressure spring is stainless steel, and the probe is epoxy-coated to fight corrosion. And here's the part that matters on an RV or a boat: there are no gaskets. Gaskets are the thing that dries out, cracks, and starts weeping after a few seasons of heat cycles. Take them out of the equation and you've got a valve that seals on metal and holds up. The epoxy coating on the probe keeps mineral and corrosion buildup off the sensing element, which is usually what makes an old valve either stick shut or drip constantly.\u003c\/p\u003e\n\u003cp\u003eSo when do you replace one? A few signs. If your relief valve is weeping or dripping water even when the heater is behaving normally, the seat is worn and it's time. If it's crusted with corrosion or mineral scale, replace it. If you've had a freeze event, or the valve is a few years old and you're doing a spring recommission, swapping the T\u0026amp;P valve is cheap insurance. And if the valve ever lets go and dumps hot water, don't just reset it and hope. Figure out why it opened, then put a fresh valve in.\u003c\/p\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable with a wrench. Kill the power or gas to the heater, let it cool, shut the water supply, and relieve the tank pressure. Back out the old valve, clean the threads, wrap fresh thread sealant, and thread the 10473 in snug. Point the discharge so it drains somewhere safe, not at a wall or a wiring run. Then fill, pressurize, and check for drips. That's it. Most folks have it done in under twenty minutes.\u003c\/p\u003e\n\u003cp\u003eA couple of honest notes. This is a replacement safety valve, not a tuning part, so don't expect to change the set point. It ships as the valve itself in English and French carded packaging. If your water heater uses a different thread size or a longer probe, check your existing valve before ordering so you match the port. And never plug or cap a relief valve to stop a drip. If it's dripping, replace it. That valve is the last line of defense on a pressurized tank of hot water.\u003c\/p\u003e\n\u003cp\u003eFor RV owners winterizing and de-winterizing every year, or boaters keeping a cabin water heater in good order, the 10473 is one of those parts worth keeping on the shelf. It's inexpensive, it's a known-good CSA certified valve, and it protects a system that runs hot and under pressure every time you use it. When yours starts to weep, you'll be glad you've got a fresh one ready to go.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eFactory set to 150 PSI and 210 degrees Fahrenheit for automatic temperature and pressure relief, no calibration needed\u003c\/li\u003e\n  \u003cli\u003e3\/4-inch NPT thread fits the common port on RV and marine water heaters\u003c\/li\u003e\n  \u003cli\u003e4-inch probe reaches into the tank to sense actual water temperature\u003c\/li\u003e\n  \u003cli\u003eBrass body with a stainless steel pressure spring for long service life\u003c\/li\u003e\n  \u003cli\u003eEpoxy-coated probe resists corrosion and mineral buildup\u003c\/li\u003e\n  \u003cli\u003eNo gaskets to dry out, crack, or start weeping over time\u003c\/li\u003e\n  \u003cli\u003eCSA certified to ANSI Z21.22 for water heating equipment\u003c\/li\u003e\n  \u003cli\u003e1 3\/16-inch shank for a standard drop-in replacement fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Camco reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does the Camco 10473 relief valve do?\u003c\/summary\u003e\n    \u003cp\u003eIt protects your water heater by venting automatically if the water gets too hot or the pressure climbs too high. It's the required safety valve on a tank-style heater, set to open at 150 PSI or 210 degrees Fahrenheit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat pressure and temperature is it set to?\u003c\/summary\u003e\n    \u003cp\u003eIt's factory set to relieve at 150 PSI and 210 degrees Fahrenheit. Those settings are built in at the factory and aren't adjustable.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat size is the thread connection?\u003c\/summary\u003e\n    \u003cp\u003eThe valve uses a 3\/4-inch NPT thread, the common connection on RV and marine water heaters. The shank measures 1 3\/16 inches.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow long is the probe?\u003c\/summary\u003e\n    \u003cp\u003eThe probe is 4 inches long and epoxy-coated. It reaches into the tank so it senses actual water temperature rather than just the air near the fitting.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the valve made of?\u003c\/summary\u003e\n    \u003cp\u003eThe body is brass, the pressure spring is stainless steel, and the probe is epoxy-coated to resist corrosion. It's built with no gaskets to dry out or weep.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it certified?\u003c\/summary\u003e\n    \u003cp\u003eYes. The 10473 is CSA certified to ANSI Z21.22, the standard covering relief valves on water heating equipment.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace my relief valve?\u003c\/summary\u003e\n    \u003cp\u003eReplace it if it's weeping or dripping during normal operation, if it's corroded or scaled, or as part of a spring recommission. If it ever opens and dumps hot water, find out why and install a fresh one.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I adjust the set pressure?\u003c\/summary\u003e\n    \u003cp\u003eNo. This is a fixed, factory-set safety valve. Never plug or cap a relief valve to stop a drip. If it's dripping, replace it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill it fit my water heater?\u003c\/summary\u003e\n    \u003cp\u003eIt fits standard 3\/4-inch NPT ports common on RV and marine water heaters. Check your existing valve's thread size and probe length before ordering so you match the port.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eCamco 10473 Water Heater Temperature and Pressure Relief Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eCamco\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e10473\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e014717104739\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eValve Type\u003c\/th\u003e\n\u003ctd\u003eTemperature and Pressure (T\u0026amp;P) Relief Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSet Pressure\u003c\/th\u003e\n\u003ctd\u003e150 PSI (factory set)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTemperature Setting\u003c\/th\u003e\n\u003ctd\u003e210 degrees Fahrenheit (factory set)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eThread Connection\u003c\/th\u003e\n\u003ctd\u003e3\/4 Inch NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProbe Length\u003c\/th\u003e\n\u003ctd\u003e4 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eShank Length\u003c\/th\u003e\n\u003ctd\u003e1 3\/16 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBody Material\u003c\/th\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePressure Spring\u003c\/th\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProbe Coating\u003c\/th\u003e\n\u003ctd\u003eEpoxy-Coated\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eGaskets\u003c\/th\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eCSA certified to ANSI Z21.22\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePackaging\u003c\/th\u003e\n\u003ctd\u003eEnglish\/French carded\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does the Camco 10473 relief valve do?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It protects your water heater by venting automatically if the water gets too hot or the pressure climbs too high. It's the required safety valve on a tank-style heater, set to open at 150 PSI or 210 degrees Fahrenheit.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What pressure and temperature is it set to?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's factory set to relieve at 150 PSI and 210 degrees Fahrenheit. Those settings are built in at the factory and aren't adjustable.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What size is the thread connection?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The valve uses a 3\/4-inch NPT thread, the common connection on RV and marine water heaters. The shank measures 1 3\/16 inches.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How long is the probe?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The probe is 4 inches long and epoxy-coated. It reaches into the tank so it senses actual water temperature rather than just the air near the fitting.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the valve made of?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The body is brass, the pressure spring is stainless steel, and the probe is epoxy-coated to resist corrosion. It's built with no gaskets to dry out or weep.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it certified?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. The 10473 is CSA certified to ANSI Z21.22, the standard covering relief valves on water heating equipment.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"When should I replace my relief valve?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Replace it if it's weeping or dripping during normal operation, if it's corroded or scaled, or as part of a spring recommission. If it ever opens and dumps hot water, find out why and install a fresh one.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I adjust the set pressure?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. This is a fixed, factory-set safety valve. Never plug or cap a relief valve to stop a drip. If it's dripping, replace it.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will it fit my water heater?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It fits standard 3\/4-inch NPT ports common on RV and marine water heaters. Check your existing valve's thread size and probe length before ordering so you match the port.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Camco","offers":[{"title":"Default Title","offer_id":45080111120477,"sku":"2010059","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_a9565465-658b-4403-830e-671135ec96c1.jpg?v=1789983047","url":"https:\/\/nvnmarine.com\/products\/camco-10473-3-4-t-p-water-heater-relief-valve","provider":"NVN Marine","version":"1.0","type":"link"}