Severn’s P‑Series Piston Actuator is engineered for seamless integration with a wide range of control valves, louvres, and dampers. Designed for both on/off and modulating duties, these high‑performance actuators deliver significantly enhanced thrust compared with traditional diaphragm units.
Available in single‑acting or double‑acting configurations, the P‑Series features a fully field‑reversible design and accommodates a broad selection of springs to ensure reliable positive fail action. Positioners are typically yoke‑mounted and of the double‑acting type, supplying air to both sides of the piston for exceptional stability, precision, and resistance to fluctuating process loads.
Key Design Features of the Severn P‑Series Piston Actuator:
- High thrust capability with air supply pressures up to 150 psig (10 bar)
- Multiple size options with extended stroke capability
- Robust components for trouble-free, low-cost ownership
- Positive spring‑air fail action (not field reversible)
- Lightweight, corrosion‑resistant build
- Rotary variants available
Benefits of the Severn P‑Series Piston Actuator
- High degree of stem positioning accuracy
- Cylinder design has lower air consumption than a comparable diaphragm actuator
- Highly stable providing inherent stiffness over full stroke
- Highly responsive with minimum latency on movement or positioning
- High‑resolution stem positioning up to 12″ stroke (longer strokes available)
- Adjustable actuating forces to suit different applications
- Rigorous in-field testing
- Manufactured to ISO 9001 certification
To find out more about the P-Series Actuator, download the brochure. If you have an Actuator based enquiry, you can contact the Severn team by completing the enquiry form located here.
