What is the primary usage of a gate valve in a distribution system?

A gate valve is primarily used for isolation in a distribution system. Its design allows for a clear and unobstructed flow path when fully open, making it highly effective for completely stopping or allowing the flow of water in a pipeline. This can be necessary during maintenance or repair work when the section of the pipe needs to be isolated from the system.

Unlike other types of valves designed for flow regulation, pressure relief, or backflow prevention, the gate valve is not intended to regulate the flow rate or pressure. Instead, it focuses on enabling operators to seal off sections of the pipeline to prevent water from passing through, ensuring that isolated areas can be worked on safely and efficiently. This trait is crucial during system upgrades, repairs, or emergencies, making the gate valve an essential component in water distribution networks.