The 40003918-006 (identically cross-referenced as 40003918-006/U) includes a precision-engineered ball and shaft assembly and a rugged adapter plate

This specific model is designed for standard heating/cooling auto changeover

providing high-limit protection by breaking the electrical circuit when gas pressure exceeds the calibrated threshold

Bypassing a blocked vent safety switch can lead to fire hazards or toxic gas exposure

For service technicians and mechanical contractors

Belimo LF24 Actuator Refrigerant The 40003918-006 (identically cross-referenced asThe Belimo LF24 Actuator is a rugged, 24V AC DC spring return damper actuator engineered for reliable on off control in HVAC systems. Delivering 35 in lb torque, this unit is designed for dampers up to approximately 8. 5 square feet, ensuring positive shut off and fail safe operation during power loss. As a direct replacement for the MA 7103, the LF24 features a universal power supply and a simplified mounting bracket that reduces installation time in