Schneider Electric (Barber Colman) MK-8801 Pneumatic Valve Actuator, 100 sq in

Description

Schneider Electric (Barber Colman) MK-8801 Pneumatic Valve Actuator

The Schneider Electric (Barber Colman) MK-8801 is a proportional control, spring return pneumatic valve actuator engineered for reliable linear valve positioning in commercial HVAC and building automation systems. With a robust 100 square inch diaphragm area and a NEMA 1 enclosure, this actuator delivers consistent, accurate valve modulation in a wide range of heating, cooling, and process control applications.

Key Features

• Proportional control for precise, modulating valve positioning
• Spring return operation ensures fail-safe valve positioning on loss of air signal
• Linear movement design for direct-coupled valve stem actuation
• 100 square inch diaphragm area provides high thrust output for demanding valve applications
• Operating pneumatic signal range: 3–8 PSI
• 1/8″ NPT air connection for easy pneumatic line hookup
• 1″ nominal stroke for compatibility with a broad range of control valves
• NEMA 1 enclosure rating for standard indoor installations

Specifications

• Brand: Schneider Electric (Barber Colman)
• Model / SKU: MK-8801
• Actuator Type: Pneumatic, Proportional Control
• Action: Spring Return
• Movement: Linear
• Diaphragm Area: 100 square inches
• Pneumatic Signal Range: 3–8 PSI
• Air Connection: 1/8″ NPT
• Nominal Stroke: 1 inch
• Enclosure Rating: NEMA 1

Application

The MK-8801 is ideal for use in commercial building HVAC systems where pneumatic control is required for two-way or three-way modulating control valves on heating hot water, chilled water, and steam coil applications. Its spring return feature provides a dependable fail-safe position, making it a trusted choice for critical comfort and process control environments.