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The CAMCO MFG 10423 is an automatic temperature and pressure relief valve designed for residential water heater installations. The valve features a 0.5-inch inlet and outlet configuration with a 4-inch probe for accurate sensing inside the water heater tank. Temperature and pressure relief valves are a critical safety component that opens automatically when water temperature or system pressure exceeds safe operating thresholds, preventing dangerous over-pressurization. Licensed plumbers install this valve as part of standard water heater service and new installations in compliance with local plumbing codes.
This valve is intended for use on residential storage-type water heaters where a properly rated temperature and pressure relief valve is required by code. The 0.5-inch connection size fits standard water heater tank tappings, and the 4-inch probe length is suited for typical residential tank wall depths. This part ships in a package quantity of four units, making it suitable for stocking by plumbing contractors and supply houses that service multiple installations.
Designed as an OEM-style replacement temperature and pressure relief valve for residential storage-type water heaters with a 0.5-inch tank tapping.
Installation must be performed by a licensed plumber in accordance with the applicable local plumbing code and the International Plumbing Code (IPC). Always shut off the cold water supply and disconnect power or gas to the water heater before removing or installing a relief valve. Apply thread sealant tape to male threads before installation and do not overtighten. A properly sized discharge pipe must be connected to the valve outlet and routed to a safe drain location as required by code.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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