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Prior to the 1960s, a pressure switch was used in the hydraulic braking circuit to control power to the brake lights; more recent automobiles use a switch directly activated by the brake pedal. In dust control systems (bag filter), a pressure switch is mounted on the header which will raise an alarm when air pressure in the header is less than ...
Air behaves in a fluid manner, meaning particles naturally flow from areas of higher pressure to those where the pressure is lower. Atmospheric air pressure is directly related to altitude, temperature, and composition. [16] [17] In engineering, airflow is a measurement of the amount of air per unit of time that flows through a particular device.
subject a volume of gas or liquid to physical pressure, as the atmospheric pressure within an aircraft ("To protect the Aircraft's structure, the plane was pressurized to 8000 ft.") proctor variant of the word procurator, is a person who takes charge or acts for another; title of various legal and ecclesiastical appointments.
Vessel dished ends are mostly used in storage or pressure vessels in industry. These ends, which in upright vessels are the bottom and the top, use less space than a hemisphere (which is the ideal form for pressure containments) while requiring only a slightly thicker wall.
Another specialized connector version has a permanently attached wire pigtail protruding from the top of the insulated cap. The pigtail may be unterminated, or it may end in a preinstalled spade lug. If colored white, it typically may be used for splicing neutral wires in a device box, while leaving a pigtail free for connection to a device ...
National Coarse; numerical control: The [U.S.] National Coarse series of pre-1949 corresponds today to the Unified National Coarse (UNC) of the Unified Thread Standard. NCM: nonconforming material(s) This abbreviation is used in a machine shop when recording nonconformances (out of tolerance, etc.). For example, "An NCM tag was tied to the ...
In retail marketing, an endcap, end cap, Free Standing Display Unit (FSDU), or gen-end (general end shelving) is a display for a product placed at the end of an aisle. It is perceived to give a brand a competitive advantage. [1] It is often available for lease to a manufacturer in a retail environment.
A gas tap is a specific form of ball valve used in residential, commercial, and laboratory applications for coarse control of the release of fuel gases (such as natural gas, coal gas, and syngas). Like all ball valves its handle will parallel the gas line when open and be perpendicular when closed, making for easy visual identification of its ...