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If the switch remains open while the plenum is cool
This liquid line valve features standard industry sweat connections typically sized for 3/8-inch lines
it functions by creating a controlled vacuum to pull combustion gases through the heat exchanger and expel them safely via the flue vent
specifically water and brine applications
Engineered for precision in HVACR monitoring
Laars Heating Systems V0049900 Valve 322056-301 If the switch remains openThe Laars Heating Systems V0049900 Valve is a 1 inch, 24V combination natural gas control designed for high demand hydronic applications. This OEM Laars replacement part is engineered specifically for Mighty Therm boiler models, specifically the 325 400 series (including HH, PH, VW, and PW configurations). Operating with a 4" WC manifold pressure, this valve ensures precise fuel regulation and consistent ignition cycles in commercial and residential
