Pneumatic Needle Valve

The Pneumatic Needle Valve is bi directional, while the flow control is one directional only. In both the fittings, there is a finely threaded stem, which allows the gradual adjustment of the quantity of controlled flow, which passes through the valve. This controlled flow enters the input port and travels through the orifice, which is actually sized by the tapered stem, and out through the output port.
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