Electro-Hydraulic Actuators

Skilmatic SI Range

The Skilmatic range of Rotork actuators offer a unique and reliable solution for electric fail-safe and modulating control for both quarter-turn and linear valves and dampers.

They combine the simplicity of electrical operation with the precision of hydraulic control and the reliability of mechanical spring return or accumulator fail-safe action.

Available in both quarter-turn (65 to 600,000 Nm) and linear (1.5 to 3,850 kN) execution, the actuators are offered with a wide range of operating speeds, ESD inputs, partial stroke testing, analogue and fieldbus communication capabilities to comply with all control configurations. Independent limit switches and position feedback are provided. Selectable status and alarm indication with volt free relay outputs are also offered as standard.

• Electrical powered, 1-phase, 3-phase or 24 VDC
• Fail-safe to close, open or lock in last position
• Spring-return or double-acting
• Adjustable operating speeds with stepping facility and optional internal flow control valve
• Configurable Partial Stroke Testing (PST) Single or dual ESD/PSD input with solenoid configuration options
• Positioning control option 4-20 mA input and output, resolution 0.3%
• Network options Pakscan™, Profibus®, Modbus®, HART® and Foundation Fieldbus®
• Configurable status and alarm outputs
• Watertight up to IP66/68 (Control Module), IP66/67 (Complete Assembly)
• Explosionproof Exdb IIB & IIC T4 –ATEX, IEC and EAC
• TÜV Functional Safety SIL certified to IEC 61508:2010
• Operating temperature -50 to +70 °C

See Skilmatic SI Range Catalogue (pub021-064)

For more information or quotations on the above range of products, please contact the following EPC representative.

Contact Person: Mark Trevethan