Flowserve Limitorque LPS Pneumatic Heavy-Duty Scotch Yoke Actuator Single Double Acting High Torque Oil Gas

The Flowserve Limitorque LPS Pneumatic Heavy-Duty Scotch Yoke Actuator is a high-performance industrial drive solution engineered for extreme oil and gas industry conditions. Featuring single and double acting configurations with high torque output, this robust actuator converts pneumatic power into precise rotational motion, delivering reliable, fast valve actuation for on/off, modulating and safety control in harsh oil and gas operations. Built with heavy-duty materials and an optimized scotch yoke design, it ensures exceptional durability, minimal downtime and consistent performance in high-pressure, high-demand industrial environments, meeting the strict operational standards of the global oil and gas sector.

• High torque output for heavy-duty valve actuation in oil and gas systems
• Configurable single/double acting modes for flexible fail-safe operation needs
• Optimized scotch yoke design reduces transverse load and boosts actuation efficiency
• Heavy-duty carbon steel construction for superior durability in harsh industrial conditions
• Modular structure enables easy field maintenance, conversion and part replacement
• Direct valve coupling (ISO 5211 compliant) for minimal power loss and precise motion
• Wide operating temperature range adapts to extreme oil and gas field environments
• Multiple industry certifications ensure compliance with global safety and performance standards
• Low maintenance design cuts operational costs and reduces unplanned downtime
• Compatible with full range of pneumatic control accessories for seamless system integration

• Actuator Model: Flowserve Limitorque LPS Pneumatic Scotch Yoke Actuator
• Actuation Type: Pneumatic Single Acting (Spring Return), Double Acting
• Max Torque Output: Up to 250 kNm (custom higher torque available on request)
• Maximum Allowable Working Pressure (MAWP): 12 barg (174 PSIG)
• Supply Medium: Instrument air, nitrogen, sweet gas (sour gas compatible on request)
• Standard Operating Temperature: -29°C to 100°C (-20°F to 212°F)
• Custom Temperature Range: -60°C to 160°C available upon request
• Travel Stops: End-mounted, adjustable ±5° (enclosed protected version optional)
• Construction Material: Fabricated carbon steel (housing, cylinder, spring can)
• Valve Interface: ISO 5211 compliant for direct valve coupling
• Sealing Material: Buna/NBR, Viton, Silicon (custom for extreme conditions)
• Corrosion Protection: ISO 12944-2 / EN 15714-3 compliant (up to C5-M optional)
• Design Life: 25 years with proper installation and routine maintenance

The Flowserve Limitorque LPS Actuator is the ideal heavy-duty actuation solution for oil and gas industry applications, including:

• Onshore and offshore oil/gas production platform valve control
• Refinery process pipeline on/off and modulating valve actuation
• Natural gas transmission and distribution system safety valve drive
• Oil/gas storage and terminal tank farm fluid control valve operation
• ESD (Emergency Shutdown) and HIPPS (High-Integrity Pressure Protection Systems)
• Wellhead and Christmas tree valve actuation in oil/gas drilling operations
• Pipeline pigging and maintenance valve control for oil/gas transportation
• Petrochemical plant heavy-duty process valve drive (oil/gas derived feedstocks)
• LNG/LPG processing and storage facility cryogenic valve actuation (custom version)
• Oil/gas industry high-pressure, high-torque industrial valve automation

1. What is the difference between single and double acting modes?

   Single acting uses spring return for fail-safe (fail close/fail open) operation with pneumatic power for one direction; double acting uses pneumatic power for both directions, with fail-lock via auxiliary accessories.

2. Is the LPS actuator compatible with all industrial valves?

   It is optimized for quarter-turn angle valves (ball, butterfly, plug valves) and complies with ISO 5211, enabling direct coupling with most standard industrial quarter-turn valves.

3. Can the actuator be customized for sour gas environments?

   Yes, custom material upgrades and corrosion protection treatments are available to meet NACE MR0175 standards for sour gas oil and gas operations.

4. What maintenance is required for the LPS actuator?

   Routine inspection of pneumatic connections and seals, 6-year scheduled on-site maintenance, and replacement of wear parts (per EN 15714 for high-cycle applications).

5. Does the actuator support integration with digital control systems?

   Yes, it is compatible with pneumatic positioners, limit switch boxes and transducers for seamless integration with PLC, DCS and SCADA oil and gas control systems.

6. What certifications does the Flowserve Limitorque LPS have?

   Key certifications include ATEX, SIL 3 (IEC 60518), IP66/IP67, NEMA 4/4X, PED and NACE MR0175 (optional), meeting global oil and gas industry standards.

7. Can the torque output be customized for specific valve requirements?

   Yes, Flowserve offers custom torque configurations above the standard 250 kNm for extra heavy-duty oil and gas valve actuation needs (contact factory for details).

For product inquiries, technical specification confirmation, quotation requests and order placement, please contact our professional technical and sales team via:

wechat/what's app/phone number:+86 13472860702

We provide tailored actuation solutions, on-site technical support, installation guidance and after-sales service for oil and gas industry customers worldwide.

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