MS Series
Spring-Return Hydraulic Actuator
Compact. Simple. Versatile.
Delivering thrust up to 72,000 lbs and SIL-3 Capable. Our Spring-Return Hydraulic Valve Actuator is designed to suit a wide range of valve automation applications; from commodity to severe-service extremes.
Taking Spring-Return Actuation to the Next Level:
Hydraulic Version Now Available
Specifications
- Bore Size: 1 1/2″ – 14″
- Rod Size: 1″ – 7″
- Configuration: Single-Stage
- Stroke Range: Up to 24″
- Pressure Rating: 3000 psi
Features
- Preloads up to 72,000 lbs
- SIL-3 Capable
- GT3 Triple Seal Gland for
Severe Service Applications - Fail-Open or Fail-Close
![SIL3 Logo](https://www.cowandynamics.com/wp-content/uploads/2015/05/SIL3_Color_225.png)
Download Our MS Brochure
![Cylinder cutout showing springs of Hydraulic Spring-Return Valve Actuator - MS Series](https://www.cowandynamics.com/wp-content/uploads/2015/02/AS_Section1.png)
- Custom dimensional sizes and thrusts available
- Springs are pre-compressed and sealed in a factory-installed canister
- No extended tie-rods required
- Standard offering – no custom design required
- Proven seal technology
Safety comes first, stays first. Backed by Cowan Dynamics’ warranty and service/support guarantee.
Valve Compatibility
Our Series MS Spring-Return Hydraulic Actuator is compatible with any process valve that requires linear motion.
![knife gate valve actuator](https://www.cowandynamics.com/wp-content/uploads/2021/08/knife-gate-valve-actuator_1.png)
Knife Gate Valve
![gate valve actuator](https://www.cowandynamics.com/wp-content/uploads/2021/08/gate-valve-actuator_1.png)
Gate Valve
![](https://www.cowandynamics.com/wp-content/uploads/2021/08/globe-valve-actuator_2.png)
Globe Valve
![](https://www.cowandynamics.com/wp-content/uploads/2021/08/pinch-valve-actuator_1.png)
Pinch Valve
![Dual Speed Manifold of Hydraulic Spring-Return Valve Actuator - MS Series](https://www.cowandynamics.com/wp-content/uploads/2016/04/MS-DualSpeed.png)
Dual Speed Manifold
Dual-Speed Cam-Operated hydraulic manifold reduces speed at end of stroke to help prevent water hammer.
![spring return hydraulic actuator performance graph spring return hydraulic actuator performance graph](https://www.cowandynamics.com/wp-content/uploads/2020/11/spring-return-hydraulic-actuator-performance-graph.png)
Get Maximum Efficiency with these reliable high (red), standard (yellow), and low (blue) operating temperature ranges
Control and Monitoring Solutions
GT3 Gland for Harsh Environments
![GT3 Gland](https://www.cowandynamics.com/wp-content/uploads/2015/04/GT3-Gland-SM.png)
Options:
Low Temp
Cast Iron construction for applications where yellow metals are not allowed
Mounting Kits: ISO, MSS & Customized Patterns Available
![Mounting Kit](https://www.cowandynamics.com/wp-content/uploads/2015/01/ValveMntgKit.png)
Anti-Rotation Torque Arm:
Maintains constant alignment between valve stem and cylinder piston-rod. Compatible with rotary type switch boxes and beacons.
Field-Adjustable Travel Stops:
To limit stroke for position-seated or limited-travel applications. Ensures valve reaches positive sealing every time without damage to valve internals.
HPU & Gas/Oil Systems
![HPU & Oil/Gas System](https://www.cowandynamics.com/wp-content/uploads/2015/06/HPU3.png)