Special Features:

Part to be used on a surface ship so no special certification required; part name assigned by the controlling agency is, stem disc assembly (stop valves).

Properties:

A metallic, needle shaped item having a one-piece stem threaded for securing to, or positioning into, a mating part. The point may be of various angles or shapes, such as conical or tapered, to correspond with the mating seat. The item is designed for the fine control flow or restriction of liquids or gases in a given system. It may be provided with a knurled head for rotation by thumbs and fingers, or be driven with either a wrench, handle, or inserted driver. Excludes valve, fuel-air mixture control, automatic.