The JOHNSON CONTROLS MP821D pneumatic valve Actuator,4 to 8 spring 1/2 NPT bronze is a flow-control valve from JOHNSON CONTROLS. It regulates or directs the flow of compressed air within a fluid power circuit, switching or metering flow as its actuator or solenoid is energized. Key specifications noted on this listing include 1/2 NPT. It is commonly used in fluid power systems, machine tools, and process automation lines.
