Control Valves Manufacturers

Control valves adjust the flow rate by changing the size and shape of the flow area offered to the fluid passing through it. There are two main categories of control valve used on process plant: globe valve and rotary valves. The flow area in globe valve is dictated by the position of the valve plug relative to its seat, while the flow area in a rotary valve depends on the angular position of a disc or notched sphere within a tubular surround. A piston actuator governs the position of the flow-restricting element in both categories of valve, either directly or through a gear mechanism.