Masoneilan* Type 87/88 Pneumatic Multi-Spring Actuators

The Masoneilan 87/88 is a compact pneumatic actuator design for use with globe-style control valves. The multi-spring diaphragm construction provides a flexible solution, providing reliable low friction dynamic performance and ease of operation and maintenance.

Features & Benefits

Multi-spring construction results in a compact design with a small, light assembly for ease of handling, installation, and replacement
The compact assembly also provides customers with flexibility and efficiency in plant equipment layout and ease of access
Modular construction using common parts to create different configurations, helps to reduce overall inventory and increase customer flexibility
Field reversibility provides customers with additional flexibility to reconfigure the actuators in the field to meet fluctuating plant requirements

Application
The Masoneilan Type 87/88 actuator is designed for use in a wide range of globe control valve applications. It provides excellent throttling control performance with low dynamic friction, and meets various fail-safe and linear thrust requirements using multiple springs.

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
Design
The Masoneilan Type 87/88 is a reliable actuator with a simple mechanical interface for globe and angle style control valves. Customers benefit from a flexible and field-proven concept that is easy to install, operate, and maintain.

Rolling diaphragm design provides low friction over entire stroke for excellent control performance

Multiple springs reduces overall actuator height and increases assembly flexibility using common parts

Field reversible construction increases customer flexibility and reduces inventory

Simple interface to valve bonnet and stem results in easy replacement and maintenance
Specifications

Sizes:
No. 6, 10, 16 and 23

Effective Diaphragm Area:
No. 6: 60 in2
No. 10: 100 in2
No. 16: 160 in2
No. 23: 230 in2

Maximum Stroke:
No. 6: 0.8 in (20 mm)
No. 10: 1.5 in (38 mm)
No. 16: 2.5 in (64 mm)
No. 23: 2.5 in (64 mm)

Maximum Supply Pressure:
60 psi (4 bar)

Spring Ranges:
3-15, 6–30, 11-23, and 21-45

Air Connections:
Standard: ¼” NPT
Optional: ½” NPT

Manual Override:
Handwheel

Find technical specifications and additonal literature here.

GE Energy

User Tools

Masoneilan* Type 87/88 Pneumatic Multi-Spring Actuators

Features & Benefits

Masoneilan* Type 87/88 Pneumatic Multi-Spring Actuators

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