is essential for maintaining precise combustion air control in vintage G21 series furnaces

this SPDT air switch is designed to sense positive

As an OEM SPX Flow-Hankison part

As a direct 3100A-15Q14 replacement

it offers exact physical and electrical compatibility with a wide range of mobile home furnaces and standard residential air handlers

Schneider Electric (Erie) VS3427G14A020 Valve Assembly Els PW 17895 is essential for maintaining preciseThe Schneider Electric Erie VS3427G14A020 Valve Assembly is a heavy duty, 3 way zone valve engineered for high demand hydronic and low pressure steam applications. Rated for 15 PSI steam and fluid temperatures up to 250F, this assembly utilizes a 24Vac spring return actuator (AG14A020) to ensure a reliable fail safe position during power loss. With a high flow capacity of 8. 0 Cv and 1" NPT threaded connections, it provides the low pressure drop