he 87/88 Series is a pneumatic spring diaagm actuator. The multiple spring design configuration provides four standard spring ranges are achieved by varying spring quantity and placement. A molded rolling diaagm and deep cases reduce area change, resulting resulting in a lationship between travel and air pressure.
Actuator Type87 Air to Close (Extend Stem)88 Air to Open (Retract Stem)
The Masoneilan Type 87/88 actuator is used in a wide range of globe control valve applications.
Application:
Low to high pressure drop applications; Mechanical spring fail-safe operation; Manual override to mechanically position valve
Used in :
Power Generation, Refining, Petrochemicals, Midstream Oil & Gas, Upstream Oil & Gas.