Description
The Schneider Electric (Barber Colman) MK-4811 pneumatic damper valve actuator is suitable for use in HVAC systems. It has a spring return fail safe mode and is designed to work with spring range of 5-10 PSIG and has 1/8” FNPT air connections. It has a diaphragm area of 11 square inches which provides the better performance in actuating dampers and valves. It is rugged and can perform the intended function in extremely low temperatures of -20°F to high temperatures of 220°F.
