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Needle valves are instruments that are available with small ports and a threaded needle-shaped plunger used in flow-metering applications to control and regulate the flow of liquid media and also in vacuum systems to control gas flow at low pressure. These valves are made of high grade material such as stainless steel and are designed for rugged construction. To assure high performance and stability, these needle valves are stringently checked for shell testing for no leakage, precise dimension and smooth operation. Provided in different stem types, these are ideal for high pressure sampling systems, test stands and high pressure shut-down systems.