What type of valve is utilized by large pump intake connections using hard or soft suction hose?

Answer: C — Butterfly valve

In large pump intake connections that use either hard or soft suction hose, the appropriate type of valve is the butterfly valve. A butterfly valve is designed to provide quick and effective flow control. It operates by rotating a disc within the pipeline, which regulates the flow of water through the valve. This design allows for a compact and lightweight solution, which is essential for effectively managing water intake in firefighting operations. Butterfly valves are particularly suited for applications involving large flows, making them ideal in the context of pump operations where rapid adjustments to flow are frequently needed. Their construction also allows for a tight seal when closed, preventing backflow and maintaining pressure within the system, which is crucial for efficient water delivery during firefighting efforts.