The Schneider Electric MA40-7043-501 is a high-performance DuraDrive spring return actuator designed for two-position control of dampers and valves in commercial HVAC systems

This manual reset rollout switch is calibrated to open at 320 degrees F

Constructed from high-grade stainless steel to resist corrosion and wear

technicians can effectively prevent evaporator icing and erratic cycling during low-load conditions

Its galvanized steel construction offers the structural integrity required for long-term reliability in residential and light commercial air handlers

Johnson Controls V-4440-1008 Valve Assembly Refrigerant The Schneider Electric MA40-7043-501 isThe Johnson Controls V 4440 1008 is a professional grade three way brass valve assembly specifically engineered for return valve applications in terminal unit control systems. Featuring a 1 2" NPT connection and a 2. 4 Cv flow coefficient, this assembly provides precise modulation for hot water, chilled water, or 50% glycol solutions. The integrated pneumatic actuator operates within a 6 to 9 psi spring range, ensuring reliable proportional control