A sleeve in a valve refers to a cylindrical component that is typically made of metal or a flexible material and is used to regulate the flow of fluids or gases through the valve. The sleeve is located within the valve body and can be moved or rotated to either restrict or permit the flow of the fluid or gas. In some valve designs, the sleeve may also act as a seal to prevent leakage of the fluid or gas.
Sleeves can be used in a variety of valve types, including globe valves, pinch valves, diaphragm valves, and others. They are often replaceable components that can be easily swapped out if they become damaged or worn over time.
