Camco Temperature & Pressure Relief Valve - 1/2" Valve w/4" Probe

The Camco Temperature & Pressure Relief Valve with 1/2" valve and 4" probe is essential protection for RV and marine water heater systems exposed to extreme conditions on the water. Whether you're running a galley setup on a fishing charter or living aboard for extended trips, excessive pressure and temperature buildup can damage your freshwater system or create dangerous conditions. This relief valve automatically vents overpressure before damage occurs, safeguarding your investment and crew safety during long days at sea or months in remote anchorages.

Factory-set at 150 PSI, the Camco valve uses corrosion-resistant metal construction designed to withstand saltwater spray, humidity, and thermal cycling that rapidly deteriorate standard components. The 4" probe extends directly into the water heater tank, providing accurate temperature monitoring independent of ambient conditions—critical in sealed systems where pressure can spike without warning. The epoxy-coated probe resists mineral buildup and corrosion, eliminating the reliability issues common with gasket-dependent designs that fail after a season or two in marine service.

Boaters, RV cruisers, and commercial fishing operations rely on this valve to prevent catastrophic failures when water heaters are exposed to rapid temperature swings—engine heat transfer, solar exposure, or prolonged idle periods in hot climates. The 1/2" valve connection fits standard marine water heater installations, and the compact 4" probe design accommodates most tank configurations without requiring significant plumbing modifications. Installation is straightforward for experienced technicians, and the no-gasket design eliminates routine maintenance, giving you one less system to monitor during offshore passages or extended liveaboard seasons.