Schneider Electric (Barber Colman) MK-4821 Pneumatic Valve Actuator Els PW 17895 Designed as a normally closed

Designed as a normally closed actuator

System Reliability: Restores proper flame sensing to eliminate nuisance trips and burner short-cycling caused by carbon buildup or sensor fatigue

Operating at 115Vac

and WeatherKing gas valves and control boards

Schneider Electric (Barber Colman) MK-4821 Pneumatic Valve Actuator Els PW 17895 Designed as a normally closedThe Schneider Electric MK 4821 is a professional grade pneumatic valve actuator designed for the precise positioning of 1 1 2" to 2" VB 9XXX series globe valves in commercial HVACR systems. Built for the rigors of mechanical rooms, this actuator features a rugged die cast aluminum housing and an 11 sq. in. effective diaphragm area. It operates on a proportional pneumatic signal with a nominal 8 to 13 psi spring range, ensuring reliable spring return