What type of valve is typically used to control flow in ship piping systems?

The gate valve is commonly used in ship piping systems for controlling flow due to its design that allows for minimal resistance when fully open. This type of valve provides a straight line of flow through the valve and is ideal for applications where the valve will either be fully open or fully closed, which minimizes the risk of flow turbulence and helps maintain system efficiency. Gate valves operate with a gate that lifts or lowers to open or close the flow passage.

In ship systems, particularly those handling liquids such as fuel oil or cooling water, gate valves are advantageous because they can be operated infrequently and still maintain a tight seal when closed. They can handle high pressures and have a robust construction suitable for maritime conditions, making them a reliable choice for controlling flow rather than creating it.

Other valve types, like the check valve, ball valve, and butterfly valve, serve specific functions, such as preventing backflow or allowing quick shut-off and throttling. However, the gate valve excels in situations where a full, unobstructed flow is desired.