This model is rated for a maximum inlet pressure of 1/2 PSI (approx

Supports 5/8" diameter shafts

Avoid mounting near coils

utilizing authentic Nor East Controls parts ensures the mechanical integrity of your industrial control valve assembly and prevents common leaks associated with improper stem seating

Lennox 21L89 Limit Switch This model is rated forThe Lennox 21L89 Limit Switch is a critical safety component designed for precise thermal regulation in Lennox HVAC systems. This auto limit switch features a 3 inch insert and is engineered to open the electrical circuit if the heat exchanger temperatures reach the 210F to 240F range. As a direct OEM replacement part, the 21L89 is identical to the 21L8901, ensuring a drop in fit for contractors maintaining residential furnaces and air handlers. This