Schneider Electric MK-4621 Globe Valve Pneumatic Actuator

Schneider Electric MK-4621 Globe Valve Pneumatic Actuator is a rugged linear actuator with spring-return designed for precise globe valve control. Engineered for upright mounting, the actuator head sits above the horizontal center line to maximize clearance and reliability in compact installations.

With a robust die-cast aluminum body, this unit measures 4-3/4 inches wide, 4-3/4 inches deep, and 3-7/8 inches high, delivering a 1/2 inch stroke and a 30 PSIG pressure rating. The neoprene diaphragm provides smooth, dependable actuation under 2-position (On/Off) proportional control.

• End connections: 1/8 inch female threaded (air)
• Mounting: Upright position with actuator head above horizontal center line
• Control: 2-position (On/Off) proportional
• Protection: NEMA 1
• Ambient temperature: -20 to 220°F
• Diaphragm: Neoprene, 11 in² effective area
• Stroke: 1/2 inch
• Spring range: 10–13 PSIG nominal
• Body material: Die-cast aluminum