g or shutting the valve by turing the stem up and down. It is applied for multi-turn gate valve, throttle valve, diaphragm valve and so on.

This multi-turn worm manual gear box actuator is operated manually by hand wheel to open or shut the valve through the reduction transmission of the bevel gears and the movement of the stem.

1 High transmission effciency(over 90%), large torque output(thrust resistant)

2 Light operation, reliable performance and convenient installation

3 Special grease is used in the actuator