Our pneumatic linear piston actuators are designed to drive control valves for the most demanding applications in the Power and Oil & Gas Industries; such as turbine bypass, steam conditioning valves, desuperheaters, compressors and antisurge. Thanks to the special patented piston design, including a double ring guiding system and a grease channel providing continuous lubrication, SC/V actuators ensure smooth and precise valve operation without any maintenance for the whole operating life. This series of actuators are designed with a patented plug-in connection system for a wide range of customer-tailored accessories and control systems to meet the most demanding and critical valve operating conditions.
Key features
- Several sizes available from 150 mm to 1600 mm or larger if required
- Several strokes available
- Double acting and single or double acting plus spring design
- Die casting aluminum bodies for small/medium sizes up to ND 320
- Carbon steel bodies for larger sizes
- Fully stainless steel design available for both double acting and spring return actuators for the harshest environment conditions
- Built in permanent lubrication system for long operating life
- Heavy duty control actuators designed for the most challenging applications used in the Oil & Gas and Power Industries
Benefits
Capability
Available in single/duplex/triplex configuration for thrust and space optimization. Double acting or spring return
Safety
SC/V actuators are designed to meet SIL 3 requirements (IEC61508) as a “single device”. SIL analysis report of the safety loop available on request
Built in permanent lubrication system Patented piston design with double ring guiding system and grease channel which makes it virtually maintenance free
Flexibility
Manifold mounted 3 way valves and accessories for optimal performances and increased safety
Long operating life
Double guide for piston and bushing
Protection
Exhaust mufflers with integral non return valve to prevent contamination of actuator internals
| Product specification and dimensions
Standard pneumatic supply medium
Air, nitrogen or sweet gas (special version for sour gas on request)
Operating pressure Pneumatic version up to 10 bar (design up to 12 bar)
Standard operating temperature -20°C to 70°C (lower or higher temperature on request)
Certifications / approvals
PED 2014/68/EU ATEX 2014/34/EU EAC TR TS 012/2011 MACHINERY DIRECTIVE 2006/42/EC IP66/67M according to IEC/EN 60529 SIL3 certified (IEC 61508) as a “single device” Designed and tested in accordance with EN 15714-3 Further certifications are available please contact IMI STI for updated list. |
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Dimensions
Optional accessories
IMI STI designs and produces a wide range of accessories and control systems to ensure superior performance and to satisfy the most demanding requirements in modulating, on/off and heavy duty service. Control systems pan-els/cabinets can be installed on the actuators or supplied loose for remote mounting which allows for easy access and limits exposure to excess heat and vibration. For more information, see dedicated brochure of accessories.
