Product Overview

Paladon Americas EHYS-Series Electro-hydraulic scotch-yoke actuators have been specifically designed to guarantee long cycle life in the most critical applications and extreme operating environments. A fabricated frame and all-steel construction coupled with an Ingress Protection rating of IP66 as standard result in lighter and more corrosion resistant actuators than traditional ones that employ castings.

Available in double-acting and spring-return configurations, the EHYS can be built in Fail Open/Fail Closed or Fail Last. Our EHYS is suitable for on/off and ESD valve applications.

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Product Features and Benefits (Actuator)

Fabricated steel frame and all-steel construction result in lighter and more corrosion resistance than competing cast body designs

• IP66 ingress protection as standard ensures the actuators are ideal for offshore and coastal applications
• Electroless nickel plated cylinder as standard with hard chromium plating, Xylan® or Electro-film available for high operating efficiency and extended piston seal life
• 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 performance
• Easy and economical maintenance due to simplified design, no special tools required
• Compliant to PED 97/23/EC
• Suitable for high frequency and high speed operation
• Several yoke lever configurations (cants) allowing selection of the actuator output torque that best suits the valve torque characteristic
• Guide bar frame design used to eliminate side forces and low friction seals ensure high efficiency
•  Modular construction means greater flexibility when selecting cylinder/spring combinations, and reduces production downtime during field servicing

Product Features and Benefits (Hydraulic Control System)

• Popular Power Sources 24Vdc, 110Vac, 220Vac, 480V 3Ph.
• Optional Power Sources*(When Properly Equipped) Solar, Battery Back-Up and Wind Turbine
• Standard Nema 4 Enclosure
• Standard Class 1, Div. 2, Class 1, Div 2 Groups C&D (Optional Class 1, Div. 1)
• Standard Electronic Actuator Controller w/Integrated LCD
• Standard Onboard Diagnostics for Troubleshooting
• Accepts Most Control Signals w/Feedback Available
• Zero-Emissions
• Standard Manual Override
• Optional PST-Ability to perform Partial Stroke Test
• Optional Environmentally Friendly Fluid Available
• Optional Fluid Level Alarm
• Optional Phase Monitoring (480V 3ph.)
• Optional Integrated Pipeline Monitoring System
• Optional Integrated Wireless Telemetry
• Modulating Now Available in 1/4 Turn

Performance Data

Torque Output Range

EHYS-Series: Up to 750,000 lbs.in. (84,738 Nm) Spring Ending

Ambient Operating Temperatures

Standard: 0 to +150°F (-18 to +65°C

Low Temp: -45 to +150°F (-42 to +65°C)