The plastic Needle Valves are ideal for instrumentation and industrial applications; they are designed for inline and panel mounted installation. The Needle Valves are adjustable from 0 to the equivalent flow of a 0.025" diameter orifice; the flow is restricted in both directions. The 6 degree angle of the pin allows for precise control of flow. The standard device is furnished with a nickel plated brass pin with screwdriver slot adjustment. Stainless steel pins and pins with knurled knobs can also be provided. Needle Valves are available in glass-filled nylon or glass-filled polypropylene. The standard o'ring is Buna-N; Viton or Ethylene Propylene, EPDM, can be provided.