Flowserve Corporation has launched the Limitorque Pneumatic Scotch Yoke, or LPS, actuator for oil and gas applications. Designed for heavy-duty, quarter-turn service in the oil and gas industry, the LPS paves the way for numerous planned fluid-powered valve actuation products designed and built by a dedicated Flowserve Limitorque operation in Milan, Italy. Designed with a high-strength, compact scotch yoke torque module, the LPS is capable of delivering up to 250 kNm (184,000 ft-lb) of torque with minimal wear and maximum efficiency.

Special designs provide torque capabilities to 800 kNm (590,000 ft-lb). Available in single-acting spring return or double-acting configurations, its robust construction is suitable for pressure inputs to 12 bar (174 psi) and operation from -60 C (-76 F) to 160 C (320 F). The LPS offers an unparalleled operating reliability, as demonstrated by maintenance intervals up to six years or as prescribed in EN 15714.

The launch includes controls packages in both standard and custom configurations, ensuring precise torque control and safety functionality. Combined with the advanced features of the LPS actuator, end users benefit from ultra-fast actuator response in emergency shutdown, isolation and modulating flow control applications. Flowserve designed and manufactured the LPS actuator in accordance with: IP66/IP66M and IP67/IP67M per EN60529; IP68 upon request; NEMA 4 and NEMA 4X per NEMA 250; and EN 15714-3.