Conbraco 17-402-04 Relief Valve Precision Fuel Metering: The #45

Precision Fuel Metering: The #45 drill size provides an accurate natural gas orifice opening for stabilized burner flames

and is suitable for use with POE and mineral oils

For intermittent or electronic ignition systems

and the Resideo 40003918-006 Adapter Kit is the industry standard for servicing legacy and current Honeywell V4043 and V8043 Series Zone Valves

this is a dedicated 120V primary transformer

Conbraco 17-402-04 Relief Valve Precision Fuel Metering: The #45The Conbraco 17 402 04 Relief Valve is a high capacity, pressure only safety device engineered specifically for hot water heating boilers and hydronic systems. Featuring a rugged cast bronze body and a 3 4 inch MNPT inlet x 3 4 inch FNPT outlet, this ASME Section IV certified valve is factory set to 150 PSI. It provides critical protection against thermal expansion, supporting systems with a discharge capacity up to 934,000 BTU HR. Designed for