What is the primary function of a gate valve in a piping system?

The primary function of a gate valve in a piping system is to start or stop the flow of fluids. Gate valves are designed to provide a straight-line flow path with minimal obstruction, making them ideal for applications where a full open or full closed position is required. When the gate valve is opened, the gate is lifted away from the flow path, allowing fluids to pass through freely. Conversely, when the valve is closed, the gate blocks the flow entirely. This on/off functionality is essential in many systems, as it enables operators to control the flow of liquids or gases effectively without significant pressure loss or turbulence.

In contrast, throttling the flow, regulating pressure, or controlling temperature typically requires different types of valves or devices, such as globe valves or pressure regulators, which are designed to provide varied flow rates and maintain system pressures, making them more suitable for those specific functions.