The Masoneilan Type 37/38 pneumatic spring diaphragm actuator is a high thrust actuator for use with reciprocating or linear stem-motion control valves. It provides long stroke capability with optional construction to meet fail-safe action required by customers.

Applications

The Masoneilan Type 37/38 actuator is designed for use in globe control valve applications requiring longer strokes and higher thrust. It provides excellent throttling control performance and meets various fail-safe and linear thrust requirements using a single spring configuration.

• Linear or reciprocating motion control valves
• Pneumatically operated control systems
• Low to high pressure drop applications
• Mechanical spring fail-safe operation
• Manual override to mechanically position valve
• Mounts directly on control valve bonnet
• Actuator stem connected directly to valve stem