How are gate valves typically controlled?

Gate valves are commonly controlled through handwheels or quarter-turn handles. This method allows for manual control of the valve position, enabling the user to open or close the valve by turning the handwheel or handle. The design of gate valves typically requires a full rotation to operate them effectively, which is why handwheels are often utilized for this purpose.

Using a handwheel provides the necessary leverage for the operator to exert force against the gate, allowing for a smooth operation in opening or closing the valve fully. When fully opened, gate valves provide minimal flow resistance, making them preferable in applications where a straight line of flow is required, such as in water supply systems.

While there are more advanced control systems available for valve operation, such as electronic controls or automation based on pressure, these are not the standard methods of operation for gate valves. In many applications, the traditional manual control remains prevalent due to its simplicity and reliability, particularly in environments where quick access and operator control are essential.