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The Watts 0066100 Series 100XL is a brass temperature and pressure relief valve designed for water heating systems. It offers reliable protection by automatically releasing pressure and temperature to prevent equipment failure in hot water supply tanks and heaters up to one hundred five thousand BTU per hour. The valve features male and female threaded connections for easy installation.
This valve is essential for water heater safety, preventing overheating and overpressurization.
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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