Needle Valve Products distributed by Pneuline Supply, Inc. have ports from 10-32 to 1 inch with a reduced thru hole size. A threaded tapered plunger allows precise regulation of flow. It is generally only capable of relatively low flow rates. They are adjustable to a flow of 0.025” diameter orifice. Our selection of Needle valves are made with bodies of Acetal, Aluminum, Brass, Nickel-Plated Brass, Nylon, Glass-Filled Nylon, Polypropylene, Glass-Filled Polypropylene, PVC and PVDF. O-Rings are Buna-N, Viton®, or EPDM. Max pressure for metal needle valves is 180 psi up to 10000 psi with temperature of -40˚F to 200˚F. Maximum pressure for plastics is 125 psi with a temperature range of 40˚F to 120˚F. Both metal and plastic are available for panel mounting.