Function: Gate valves are primarily used for completely shutting off or allowing full flow of a fluid in a pipeline, rather than for throttling or regulating flow.
Construction: They are typically made from durable materials like brass, cast iron, or stainless steel for longevity and corrosion resistance.
Operation: A handwheel or actuator is used to raise or lower a gate (or wedge) inside the valve body, which either allows the fluid to pass through or blocks the flow.
Applications: Gate valves are commonly found in industrial settings, oil and gas operations, agricultural irrigation, and water supply systems.