Pneumatic actuator LDG series

Scotch yokespring-returnsteel

The Limitorque LDG Direct Gas powered scotch yoke actuator series is specifically designed to be operated by high pressure natural gas, or any other high pressure pneumatic fluid up to a maximum of 105 barg (1500 psig). LDG actuators are ideal for pipeline applications where no external sources of motive power are present and provide a robust heavy duty design and long service life with industry leading maintenance intervals. This makes them the actuator of choice for installation in remote or unmanned facilities. Efficient design based on computational modelling and extensive experimental validation provides high performance with reduced size, weight, and consumption Symmetrical and canted scotch yoke types perfectly fit individual valve torque requirements 25-year design life and maintenance intervals up to six years, (depending on service conditions, proper installation, operation and maintenance) exceed industry expectations Modular construction allows easy on site maintenance without special tools and without removal from the valve On-board Medium-High Pressure Control group MHPC provides multiple control functionalities at full rated pressure, thus eliminating need for pressure reducer, reducing system complexity, and limiting gas consumption and exhaust Symmetric and canted scotch yoke mechanisms as standard. Customized yoke profiles available as option PED 2014/68/EU and & ASME BPVC VIII div. 1 versions available Hydraulic Handpump for Manual Operation available on request Standard or customer specified painting on request Wide range of feature and function customizations available