PRODUCTS
Valve Quarter-Turn (Scotch-Yoke) Valve Actuators
Overview
PN and HY-Series pneumatic and hydraulic scotch-yoke valve actuators have been designed specifically to guarantee long cycle life in the most demanding applications and environmental conditions. A fabricated steel frame, coupled with an all-steel construction, results in lighter and more corrosion resistant scotch-yoke valve actuators than traditional designs employing castings. A light design, superior corrosion resistance and an Ingress Protection rating of IP66 as standard make PN & HY-Series scotch-yoke valve actuators an ideal choice for offshore applications, or any other in which weight and corrosion resistance are critical design considerations.
Applications
Automation of any quarter-turn mechanism; including ball, butterfly & plug valves and louvers & dampers.
Operating Ranges
Supply Pressures
- PN-Series: 2.7 to 12 Barg (40 to 174 psig)
- HY-Series: 13 to 250 Barg (189 to 3,625 psig)
Torque Outputs
- 200 to 680,000 Nm (1,770 to 6,018,000 lb in)
Temperatures
- Ultra-low: -65 to +80°C (-85 to +176°F) (HY-Series only)
- Low: -45 to +60°C (-49 to +140°F)
- Standard: -20 to +80°C (-4 to 176°F)
- High: -20 to +140°C (-4 to +284°F)
Key Features & Benefits
- Third party approved for use in SIL 3 certified systems
- Electroless nickel plated cylinder as standard with hard chromium plating, Xylan® or Electro-film available
- Springs contained within a fully welded canister (which is post weld heat treated) to guarantee simple and safe removal
- Springs are scragged (set removal) in order to warrant optimum and stable output torque characteristics
- Easy and economical maintenance due to simplified design, no special tools required
- Compliant to PED 97/23/EC
- Modular construction means greater flexibility when selecting cylinder/spring combinations, and reduces production downtime during field servicing
- Various scotch-yoke configurations (symmetrical, demi-canted and canted) allows for optimum and cost effective valve actuator sizing
- Suitable for high frequency and high speed operation
- Guide bar frame design used to eliminate side forces and low friction seals ensure high efficiency, even at low supply pressures
Additional Resources
- Product Brochure
- Service Manual
- Weights & Dimensions
- PN-Series – Metric – Imperial
- HY-Series – Metric – Imperial
- PN & HY-Series Valve Mounting Interfaces
- PN & HY-Series Limit Switch & Control System Mounting Interfaces
- Presentation