Function: This is a manual device for pneumatic actuator valves, in an emergency, the hand wheel can be used to operate the valve switch open and close.

1. Compact and simply design, light in weight.
2. Manufactured with cast iron housing.
3. ISO 5211 direct mount patterns.
4. Easy for customers to choose relative position between gear operator and valve, with two keyway apart 90~ in the inner hole of the worm gear.
5. Easy to realize the manual drive or the pneumatic drive with the place-pin. Filled with special lubricant before leaving the factory.
6. Weather-proof is IP65.