The sandwich declutch manual override offers safe and easy valve positioning when manually overriding the Pneumatic actuators.Quarter turn to open and close industrial valves. Small volume, light weight, new style. Different ratio and output torque to match the valves sizes.All sandwich declutch operators are designed to exceed loads far in excess of their rated torques Standard connection of ISO5211 All units are totally enclosed, weather-proof and permanently lubricated, protection grade is IP65, and can be IP67,IP68 as required