What is the best type of valve to use for handling line slurry?

The choice of valve for handling line slurry is crucial due to the nature of slurries, which often consist of solid particles suspended in a liquid. A gate valve is best suited for this application because it provides a full, unobstructed flow path when fully opened. This design minimizes the risk of clogging or damaging the valve as the slurry passes through.

Gate valves operate by lifting a 'gate' or wedge out of the flow path, which allows for high flow rates and minimal resistance. This is particularly important when dealing with slurries, as any obstruction could lead to increased pressure and potential failure in the system. They are also capable of handling larger solids without getting hindered, making them appropriate for this type of application.

In contrast, other types of valves, such as the butterfly valve and ball valve, can be prone to wear from solid particles and may not provide the same level of unrestricted flow. Check valves, which prevent backflow, are not designed for throttling the flow and are therefore not suited for controlling slurry transport effectively. Thus, the gate valve stands out as the most effective choice for managing the complexities involved with slurry systems.