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The Watts 0274513 Series 174A Relief Valve is designed for hot water heating and domestic supply boiler applications. This bronze body valve provides reliable, automatic pressure relief and is ideal for protecting against overpressure conditions in hot water boilers, direct-fired water heaters, or storage tanks with indirect heaters.
This relief valve features a 3/4 inch NPT female connection and is rated at 50 psi with a capacity of 950,000 BTU. It is equipped with a spring-loaded mechanism for automatic reseating and resists sticking and freezing.
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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