What is the function of the manual valve using the gear?
By reducing the force, the man can pull the valve to open or close the valve.Butterfly valve, ball valve commonly used worm gear boxGate valve and stop valve are often driven by positive gear
Manual valve general use of deceleration reinforcement device, the main role is to make large caliber valve can be pulled. Large caliber valve opening torque is relatively large, the general strength of the direct wrench will not move
What kind of equipment do you mean by manual valves? Is it on the bus?
