HOFFMAN 1629 # 1/2" x 3/4" Straight Steam Unit Heater Air Valve. Part 401434

3/4" X 1/2" MAIN STEAM VENT 3 PSI 401434

Hoffman 1629 Steam Air Valve 1/2" X 3/4" Main Steam Vent - Model 401434. This is a generic replacement that may be functionally equivalent to OEM.

This 3/4" By 1/2" Hoffman Steam Valve is an original replacement. This valve click clack style steam valve is a main steam vent pressure regulator that is powered by a needle valve.

Need to replace a defective steam vent on a straight-steam unit? Our 3/4" steam vent valve has a 1/2 " CPT water port. The 3/4" x 1/2" CPT Steam Vent Valve is used on all new steam unit boiler installations for main inlet and outlet steam vents. The heat exchanger steam vent valve is used to perform a direct connection of the heat exchanger to a factory installed or field installed blowdown system.

The 401434 is required for installation on steam units with 3 PSI and greater.

The HOFFMAN 1629 is the replacement Air Valve for the HOFFMAN #1/2" x 3/4" Straight Steam Unit Heater. Part # 401434 and 401437.

When installing steam heat systems, this air valve is used for a #1/2" main steam supply line up to 3 PSI.

The 1/2" x 3/4" STEAM VALVE is the replacement part for the 9001-090, 9027-B, and 9030-0 steam percolator models.