Belimo ZG-LMSA-1 Shaft Extension maintaining electrical isolation between the

maintaining electrical isolation between the sensitive control logic and the inductive load side

protecting the heat exchanger from improper combustion

Key Benefits Universal Compatibility: Engineered to fit the entire FS4-3 series and AF-1 / AF-2 / AF-3 air flow switch models

it provides consistent millivolt output to the safety shut-off valve

For 2 PSI residential systems

Belimo ZG-LMSA-1 Shaft Extension maintaining electrical isolation between theThe Belimo ZG LMSA 1 Shaft Extension is a critical hardware component designed for field technicians requiring a 3 8 inch diameter shaft extension to bridge the gap between actuators and recessed or inaccessible damper shafts. This 4 inch length extension provides a stable, direct drive connection for LM series actuators and other compatible HVAC damper actuators requiring specific clearance. Built with professional grade materials, the ZG LMSA 1