LPS actuators provide up to 300 kNm (221 270 ft-lb) of heavy-duty torque. Enhanced performance is achieved by using a superior scotch yoke support design that significantly reduces transverse loads. LPS actuators feature modular construction to minimize repair time and initial cost while maximizing process availability.

▍Features
• Spring Return Single Acting (Fail Close CW and Fail Open CCW) and Double Acting (Fail Last / Fail As Is) executions
• True modular design for flexible and easy field conversion from Fail Close CW to Fail Open CCW configuration or vice versa
• Scotch yoke housing design optimized to facilitate field maintenance and to provide extended design life
• Symmetrical and canted scotch yoke types to perfectly fit valve torque requirement
• Fabricated carbon steel scotch yoke housing, pneumatic cylinder and spring can, providing the most rugged actuator available; different materials of construction for polar or offshore applications upon request
• ENP Lined Cylinders with Chrome Plated Piston Rod; Stainless Steel Cylinders, Tie Rods and Spool Pieces available upon request
• Increased maximum valve stem acceptability to allow direct coupling with valves
• Suitable for use in on/off, modulating and control valve application in general service, protective service and safety applications such as ESD or HIPPS
• Full range of accessories: switchboxes, positioners; ESD and PST functionalities; custom control panels; fire protection; quick exhaust and dampers; manual and hydraulic overrides*

▍Specifications
• Available in standard single-acting spring return and double-acting configurations, in torque ranges up to 300 kNm (221 270 ft-lb); contact factory for larger sizes
• Maximum allowable working pressure (MAWP): 12 barg (174 PSIG)
• Suitable supply medium: instrument air, nitrogen or sweet gas; contact factory for sour gas applications
• -29°C to 100°C (-20°F to 212°F) standard operating temperature range; Low temperature -60°C (-76°F) and high temperature 160°C (320°F) ranges available upon request (polar, cold, arid and tropical temperature requirements in accordance with IEC 60721)
• End mounted adjustable travel stops ± 5°, available also in an enclosed protected version upon request

▍Key Certifications and Standards Compliance
• Certified according to ATEX 94/9/EC Ex II 2GD c IIC T6
• IP66/IP66M and IP67/IP67M configurations per EN 60529
• SIL 3 certified in accordance with IEC 61508
• Available in compliance with PED 97/23/EC, ASME BPVC Sec. VIII Div. 1, EN 13445-3 Part 2 for Unfired Pressure Vessels
• NEMA4 and NEMA4X per NEMA 250
• Available valve interface in compliance with ISO 5211
• Actuator spring design in compliance with EN 13906
• Corrosion protection in compliance with ISO 12944-2 and EN 15714-3; optionally available up to and including C5-M
• Available in compliance with NACE specification MR0175 for sour gas applications
• Manufactured and tested in compliance with ISO 9001 and EN 15714-3 
• Certified according to CU TR and GOST-R