High-Flow Performance: Rated for up to 240

Can I use a universal limit switch instead of the Lennox 83L83

Superior Material Durability: The cast bronze construction and stainless steel mesh resist de-alloying and erosion in steam and water service

and the required cylinder head gaskets for a complete top-end overhaul

Resideo 50043683-001 Valve R-22 High-Flow Performance: Rated for upProtecting potable water systems from cross contamination is non negotiable in steam based humidification. The Resideo 50043683 001 Water Backflow Prevention Valve is a direct replacement for 50030142 001, specifically designed for use with the TrueSTEAM Humidifier line (including HM506, HM509, and HM512 models). Built with a brass body and high temperature resistant seals, this double check valve ensures internal HVAC water remains isolated from the