Valve stem

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(Mach.) a rod attached to a valve, for moving it.

See also: Valve

References in periodicals archive ?
The tube, valve base, and valve stem are all made from Elastollan TPU, which simplifies the production process and allows the product to be easily recycled.
com/research/tlj5qh/global_auto_valve) has announced the addition of the "Global Auto Valve Stem Seal Industry Report 2014" report to their offering.
Since each valve can have up to four or more possible emissions centers: a bonnet gasket, two flange gaskets and a valve stem (which is the main emission source for valves), their main focus became concentrated on engineering a solution with the valve stem.
A rubberized, soft-seat valve stem provides positive shut-off and forgives dirt or other foreign matter.
Additionally, special stem packing materials are developed by the Val-Tex Company in the US, to stop valve stem passing or external leaking of crude oil or sour gas to the atmosphere, preventing any harm to the personnel or the environment.
However, the valve stem position is not easily measurable.
Many sites exercise an "out of sight, out of mind" approach to stem nut maintenance, which can lead to unexpected failure of a motor-operated valve stem nut.
Another maintainer placed the inflation adapter on the valve stem of the H-60 tire.
Traditional pMDI valves operate on a "dose retention" principle, collecting the dose when the valve stem is released after firing.
The stainless steel AISI 316 Nethergear unit mounts directly onto the valve stem without altering the actual valve itself.