Valves can be operated manually or automatically (with an actuator).
There are three types of manual operation.
A handle is ordinarily used for manual operation of gate and globe valves.
(The photograph illustrates a stainless steel gate valve with a handle.)
A gear-operated valve is ordinarily used for manual operation of butterfly and ball valves. There are two additional options: the hammer blow and chain wheel types.
(The photo illustrates a gear-operated aluminum butterfly valve.)
A lever handle is ordinarily used for manual operation of ball valves.
(The photo illustrates a bronze ball valve with a lever handle.)
There are two types of automatic operation, according to the driving source of the actuator.
The actuator is driven by electric power
(AC or DC).
(The photo illustrates an EXH type actuator.)
The actuator is driven by compressed air.
(Photo illustrates an FAS type actuator.)
Actuator Types and Applicable Valves
Actuator
Valve
Pneumatic
Cylinder operated actuator
Gate, globe, butterfly and ball valves
Pneumatic
Air motor operated actuator
Gate and globe valves
Electric
Multi-turn actuator
Gate and globe valves
Electric
Part-turn actuator
Ball and butterfly valves
Manual Operation
Gate, globe, butterfly and ball valves
The KITZ lineup includes actuators developed by KITZ for operating ball and butterfly valves. In addition to these actuators, a large variety of electric and pneumatic actuators are also available.