The valves in which the closure member moves (discs, wedges) in a straight line to allow, control, regulate, stop, or throttle the flow are known as linear motion valves. Gate, globe, diaphragm, pinch, and lift check valves are linear motion valves. The linear motion valve is the most common type of valve available today.It is well-known for its simple design and ease of maintenance

Linear valves are of two types: rising stem (multi-turn) and axial. In both valve types, the flow obstructer moves linearly but there are wide differences in construction and operation.Typical examples of multi-turn valves are globe valves, gate valves, pinch valves and needle valves. Typical examples of axial linear motion valves are Coaxial valves, angle seat valves, etc. They are typically fast-acting and only used for on/off process applications.

Linear Motion Gate Valve

Linear Motion Valve Fully Closed

Linear Motion Valve-Fully Open