The need to control process and vent valves from a remote location makes air operated (pneumatic) valves a vital component to many process applications.

All MAN Series needle valves with MPI™ connections are available with Fail Open (-FO) or Fail Closed (-FC) Piston Type Actuators. Four sizes of air actuators (Medium, Heavy, Extra Heavy-Single Stage, and Extra Heavy-Two Stage) are offered to meet the service requirements of Parker MAN Series Needle Valves. Both Fail Closed (normally closed) and Fail Open (normally open) designs have overlapping piston sizes to help meet efficiency or economical requirements.

Actuators are available for Outdoor Service. These operators provide corrosion resistant components and prevent the ingress of outside elements and moisture. Limit Switch position location is available upon request.

Piston type air-operated valves offer a unique, reliable design providing for a long and dependable life. These valves are more compact than diaphragm valves and are appropriate for applications such as high-flow gas and liquid delivery systems to reactors and mixer/vaporizers.

Note:
Air inlet for Fail Close operation is located in the back, opposite the front of valve. For other locations, consult factory. Holes supplied in yoke bracket for mounting.
Fail Close = Air-to-Open
Fail Open = Air-to-Close