Siemens Building Technology 331-4825 Actuator 318973-401 like most electronically commutated motors

like most electronically commutated motors

One-pipe steam systems require a specialized air vent valve to function correctly

ensuring seamless integration into existing IEC blower assemblies

if the internal slide is physically stuck or leaking

this motor is built for vertical mounting positions and provides superior heat dissipation in high-ambient environments

Siemens Building Technology 331-4825 Actuator 318973-401 like most electronically commutated motorsThe Siemens 331 4825 is a rugged, metal fabricated No. 3 Pneumatic Actuator engineered for reliable performance in demanding commercial HVAC environments. Designed for the precise modulation of air valves and dampers, this unit features a 8 13 psi nominal spring range and a versatile 2 3 4 inch stroke. Built with an all metal body and an ozone resistant rubber rolling diaphragm, it provides consistent force for both two position and modulating