Direct OEM Compatibility: Engineered as a precise match for Daikin-McQuay systems

For contractors performing a vent motor repair

Verify the lead end or shaft end rotation of your existing blower wheel before installation to ensure proper airflow direction

This replacement HVAC filter is essential for systems requiring high-efficiency filtration without compromising the external static pressure of the air handler

Watts 0346040 Relief Valve 318820-201 Direct OEM Compatibility: Engineered asThe Watts 0346040 (Series 174A) is a high capacity ASME Section IV boiler pressure relief valve designed for commercial and industrial hot water heating applications. Featuring a 3 4 inch NPT inlet and outlet, this valve is factory set to a 10 PSI relief pressure, providing critical overpressure protection for hot water boilers and storage tanks. The bronze body construction and non metallic seat to disc design ensure long term durability and prevent