It is the primary replacement gas valve for a wide range of Hydrotherm boilers and residential radiant floor systems

Lead-Free Construction: The LF174A series utilizes lead-free copper silicon alloy to meet stringent potable water and heating system standards

Universal Compatibility: Seamlessly replaces multiple part numbers including P282-0311

Built with a packless construction and permanent magnetic stainless steel plunger

the 740 series is specifically designed for hot water heating boilers

Lochinvar & A.O. Smith 100109814 Pressure Switch 323080-701 It is the primary replacementThe Lochinvar & A. O. Smith 100109814 Pressure Switch is the direct performance validated replacement for the legacy 180997 1 component. This critical safety device is engineered for HVAC inducer motor blowers and water heater venting systems, featuring a precise 2. 5" W. C. (Water Column) trip point. Designed to monitor differential pressure, this OEM pressure switch ensures the combustion fan is moving sufficient air before enabling the ignition