York S1-7710-3281 Limit Switch separating operating pressure from line

separating operating pressure from line pressure to ensure consistent valve modulation

This component creates a specific pressure drop within a pneumatic control loop

Ensure all mating surfaces on the cast iron sections are thoroughly cleaned of old residue or oxidation

maintaining a leak-proof seal at the valve stem is essential for system stability

preventing water ingress along the motor shaft that can lead to premature bearing failure or winding damage

York S1-7710-3281 Limit Switch separating operating pressure from lineThe York S1 7710 3281 is a critical 105 85F fan limit switch engineered for precise thermal management within residential and light commercial air handlers and furnaces. As a genuine OEM York part, this bimetal sensor ensures the blower fan activates once the heat exchanger reaches the 105F cut in point and deactivates after cooling to the 85F cut out. This specific temperature differential is vital for preventing short cycling and optimizing latent