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

24V 2-position motorized damper operator engineered for precise control in commercial and industrial HVACR systems

the Series 174A is engineered for high-demand environments where maintaining system integrity is non-negotiable

Optimized Airflow: Precision-balanced for 1140 RPM

Watts 0346040 Relief Valve 318820-201 This replacement HVAC filter isThe 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