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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
the HF21BZ030 is the manufacturer-designated replacement for part numbers MF41-6043-502 and MF-1233-705
Built with a heavy-duty ASTM B584 bronze body and a 2-piece design
Ensure your power supply matches the 208-230/460V requirements
Heavy-Duty Switching: Managed 25 FLA inductive load capacity and a high 35R resistive rating at 240VAC provides reliable power distribution to motors and heating elements
Common issues include the blower motor failing to start after the heat exchanger has warmed up
Watts 0277010 Valve 321894-708 the HF21BZ030 is the manufacturer-designatedThe Watts 0277010 is a heavy duty ASME Section IV certified hot water pressure relief valve designed for high capacity protection in commercial boiler systems and domestic hot water supply applications. Engineered for reliability, the Series 174A features a 1 1 2 inch NPT female inlet and outlet, facilitating a high volume steam pressure discharge capacity of up to 7,630,000 BTU hr at a factory set relief pressure of 150 psi. Its bronze body