What are the four most common categories of valves in a water distribution system?

The four most common categories of valves in a water distribution system include Slide, Rotary, Globe, and Diaphragm Valves, which align with critical functions in flow control and isolation within the system.

Slide valves are designed to allow or block flow through a channel by sliding a gate into the flow path, making them effective for applications requiring a tight seal. Rotary valves operate by rotating a disc or a ball within the piping system, allowing for precise flow control and are often used in applications where space may be limited. Globe valves are known for their ability to regulate flow accurately, thanks to their valve seat design which allows for optimum flow control and throttling. Diaphragm valves use a flexible diaphragm to control flow, providing excellent sealing capabilities and are particularly useful in systems that handle corrosive materials or slurries.

These categories represent key valve types that are commonly used due to their operational reliability and effectiveness in managing water distribution, ensuring both safety and efficiency in the system. Other combinations presented do not contain all four of these commonly utilized valve types, which makes this grouping more representative of standard practices in water distribution systems.