Key Benefits for Technicians: Precise Rectification: Engineered to provide a consistent microamp signal to the furnace control board

Designed to maintain the precise milliamp signal required by the gas valve

replacing a fouled or out-of-spec switch with this genuine Lennox furnace limit switch restores factory-standard safety protocols and operational reliability

this individual unit (383-500-251) allows technicians to replace the cover plate insulation separately during targeted repairs

utilizing the genuine Resideo 392449-4 ensures compatibility with brass pilot gas lines and prevents the common mechanical failures associated with generic sub-components

Watts 0369010 Valve Els PW 17895 Key Benefits for Technicians: PreciseThe Watts 0369010 474A Safety Relief Valve is a 3 4" heavy duty bronze valve engineered for high capacity hot water heating boiler protection. This unit is specifically factory set at 125 psi to secure residential and commercial systems against over pressurization. With a high relief capacity of 1,700,000 BTU Hr, the Watts 474A ensures rapid discharge when pressure thresholds are exceeded. The internal architecture features an elevated seat design,