The Armstrong International 15B3 is a high-performance Series B cast iron float and thermostatic steam trap designed for industrial and commercial heating systems

ensuring long-term duty in high-traffic mechanical rooms

For liquid or oil-based applications

providing reliable timing logic for gas-fired applications

neutralize harmful acids

Belimo TFB120-S Actuator Freon The Armstrong International 15B3 isThe Belimo TFB120 S Actuator is a spring return damper actuator designed for reliable on off control in HVAC systems. Delivering 22 in lb torque, this unit is engineered for small to medium dampers and control valves requiring a fail safe position during power loss. Operating on a 120Vac power supply, it features a rugged NEMA 2 housing for demanding mechanical environments. The integrated auxiliary switch provides essential position feedback for