Although they are less popular than sliding-stem control valves, a wide range of rotary-shaft control valves, including ball valves, butterfly valves, and rotary-plug valves, are…

Sliding-stem valves include globe valves, angle valves, and axial flow valves. Of all the control valve types, the sliding-stem, globe style valve is the most…

Emergency isolation valves are distinguished from control valves by function and by performance requirements. Emergency isolation valves are designed to provide tight shutoff when closed,…

The role of a block valve is to fully open or fully close a pipeline. Block valves are not subjected to the rigors of throttling…

A control valve serves as a variable orifice. The variable orifice includes a port and a closure member such as a plug, disk, or ball.…