Features

The MSD-II is a pneumatic, spring-opposed diaphragm actuator operating from plant air. Excellent long-term accuracy and reliability is achieved through the use of multiple springs in the actuator.

The rugged one-piece yoke, the pressed steel diaphragm case and the special nylon reinforced diaphragm provide dependable, high thrust performance. Additionally, the precision formed diaphragm eliminates friction and reduces variations in the effective area during operation which, in turn, results in exceptional linearity.

An optional top or side-mounted manual override is available on both direct and reverse acting actuators. Six different sizes of the MSD-II actuators with various accessories can virtually satisfy all application requirements.

Severe Service ; As a multi-spring type, Operation is precise and repeatability is excellent Minimizing the hysteresis error.
Solutions ; The pressure-tight chamber to which air pressure is connected has a small volume for fast response.
Technology ; All parts are engineered and tested for long life under millions of cycles.

Specifications

- Type : Multi-spring opposed rolling Diaphragm
- Size : Ø250, Ø290, Ø340, Ø400, Ø500, Ø650
- Action : Direct Acting(DA Reverse Acting(RA)
- Operating Temperature : -30℃ to 80℃
- Operating Pressure : Min. 1.4㎏/㎠ ~ Max. 3.5㎏/㎠
- Maximum Stroke : 0.8 in. to 5 in. (20mm to 130mm)
- Manual Override : Top mounted (all sizes) or Side mounted(400, 500, 650 only)
- Accessories : Positioner, Filter Regulator, Solenoid valve, Limit Switches, Position Transmitter, Booster and Transducer are available for actuator mounting.