Rotork offers a large range of quarter-turn, scotch-yoke rotor actuators in single-acting or double-acting configurations designed especially for harsh environmental conditions. Their high-torque design is compact, rugged and efficient and offers the benefits of a smaller size, lower cost, lightweight design and a mounting interface that is simple and can integrate easily with ball, butterfly or plug valve applications.
The actuators are also ideal for quarter-turn movements including lowering, lifting, indexing, opening, closing and transferring.
The control packages are designed to specifically meet application requirements and a thorough environmental qualification program was performed on these scotch-yoke actuators by Hiller. This included even the most stringent new plant design requirements, such as the Westinghouse AP1000.