What is the Function of a Gate Valve?

Gate valves regulate the flow of a liquid through a piping system.

Piping systems are used to channel fluids from one system to another. The flow of this fluid must be controlled for the piping system to direct the fluid efficiently to its destination. A gate valve can be used for this function.

Definition

A gate valve, also referred to as a sluice valve, is a valve that opens and closes to regulate fluid flow. A gate valve opens by lifting a rectangular or round gate or wedge, often called a sliding door, out of the fluid's path to allow it to flow though.

Function

Gate valves are used in straight-flow fluid systems where a minimum amount of friction is required. Unlike other valves, gate valves are constructed to be used either completely open or closed. If partially open, the fluid velocity can damage the gate valve's seal and cause leakage.

Stems

Gate valves contain either a non-rising or rising stem. Rising stems are used as a visual indication of the valve position and lift when a valve is open. Non-rising stems are used for underground gate valves or when vertical space is constricted.

References

• toolingu: What is the definition of gate valve?
• "Valve Selection Handbook, Fifth Edition: Engineering Fundamentals for Selecting the Right Valve Design for Every Industrial Flow Application"; Peter Smith and R. W. Zappe; 2003

Resources

• "Piping Systems Manual"; Brian Silowash; 2009