Our large scotch yokes offer class leading torque to weight ratios!! Offered in 15 double acting sizes and > 100 spring variants, there is one that is just right for every large valve. The centre body is offered in ductile iron as a standard (carbon steel is an option). The pneumatic cylinder and welded spring canister are of steel construction. When paired with our IECEx/ATEX rated switchbox, they offer great performance at an unbeatable value.