Valve stem

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

See also: Valve

References in periodicals archive ?
Manually operated valves require someone in attendance to adjust them using a direct or geared mechanism attached to the valve stem.
When the camshaft lobe lifts the outer side of the automotive rocker arm, the inside presses the valve stem down so as to open the valve and air is sucked into the cylinder.
A BROKEN TRACTOR TIRE VALVE STEM can put a damper on your day.
Assigned: Goodyear Tire & Rubber Key statement: A wheel mounted control assembly receives therethrough the tire valve stem from an air maintenance tire.
The model features a blacked-out appearance with dark 19-inch Rays alloy wheels, black lug nuts, a branded centre cap and red valve stem caps, a dark black tint added to the panoramic sunroof, while the side mirror caps are clad in a matching gloss black finish and interiors with aluminium-alloy sport pedals, a perforated leather steering wheel and front and rear LED map lights.
A unique feature of the NIV Series is the one-piece valve stem that functions as a sealing membrane while also supporting and centralizing the poppet in the seating area.
AD3 Morris informed the pilot, the Commanding Officer, that he thought he had a leak and had narrowed the leak down to the valve stem. AD3 Morris quickly repaired the leaky valve stem along with the help and supervision of Cpi Burwell and ensured the tire was filled to the proper PSI.
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.
Global bearings company SKF (STO: SKFB) (LSE: SKFB) (Pink Sheets: SKFRY) announced on Thursday the signing of two agreements with Scania, totalling SEK360m, for the supply of wheel bearings and high pressure valve stem seals.
Additionally, special stem packing materials are developed by Val-Tex Company in the US, to stop valve stem passing or external leaking of crude oil or sour gas to atmosphere, stopping any harm to the personnel or the environment.
The increased drive load is then applied directly and squarely to the valve stem. The torque device provides a multiplication ratio of 5:1, reducing the effort required by the operator by 80%.