Lennox 56W27 Control Limit 319847-401 Specifically rated as a 660-420#

Specifically rated as a 660-420# High Close Off device

This valve is most frequently used to switch air pressure signals between different pneumatic components or to vent pressure from actuators when the electrical signal is removed

Its robust construction ensures it holds up under high-pressure operating conditions

making it a direct replacement for most Maxon industrial ignition assemblies

Lennox 56W27 Control Limit 319847-401 Specifically rated as a 660-420#The Lennox 56W27 Control Limit is a critical safety component designed for high limit temperature monitoring in residential and commercial heating systems. This genuine OEM blue green limit switch is engineered to open the electrical circuit to the furnace if internal temperatures exceed safe operating parameters, preventing heat exchanger damage and ensuring system integrity. As a veteran grade HVAC replacement part, it offers a precise thermal