Needle Valves

Needle valves allow precise regulation of flow, but at relatively low flow rates. Needle valves are usually used in flow metering applications, especially when a constant, calibrated, low flow rate must be maintained for some time. Needle valves are not recommended for simple shutoff applications. It is not easy to tell whether the valve is open or closed by the handle position, unlike a ball valve, or valve with a rising stem.

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