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C4-FN (C4-fluoronitrile, C4FN) is a perfluorinated compound developed as a high-dielectric gas for high-voltage switchgear. [1] It has the structure (CF 3 ) 2 CFC≡N, which can be described as perfluoro isobutyronitrile , falling under the category of PFAS , or per- and polyfluoroalkyl substances.
Size of this PNG preview of this SVG file: 492 × 600 pixels. ... The vapor pressure of pure C4-FN from -50°C up to its critical point. Date: 29 September 2023 ...
This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes. Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics. Many industrial, military or otherwise professional tubes were also produced.
Neck – A coaxial cylindrical extension of the shoulder with a threaded hole into which the cylinder valve or a gas pipe connection is fitted. [4] Boss – A sturdy insert, usually in the centre of the shoulder, into which a valve or gas pipe connection is fitted. [4] Base or foot – The end of the shell opposite the shoulder. [4]
Tetrafluoromethane is a potent greenhouse gas that contributes to the greenhouse effect. It is very stable, has an atmospheric lifetime of 50,000 years, and a high greenhouse warming potential 6,500 times that of CO 2. [10] Tetrafluoromethane is the most abundant perfluorocarbon in the atmosphere, where it is designated as PFC-14.
TGOR – total gas oil ratio (GOR uncorrected for gas lift gas present in the production fluid [citation needed]) TH – tubing hanger; THCP – tubing hanger crown plug; Thr/Th# – thruster ('#'- means identification letter/number of the equipment, e.g. thr3 or thr#3 means "thruster no. 3" [citation needed]) THD – tubing head; THERM ...
Means that a feature of size is at the limit of its size tolerance in the direction that leaves the most material on the part. Thus an internal feature of size (e.g., a hole) at its smallest diameter, or an external feature of size (e.g., a flange) at its biggest thickness. The GD&T symbol for MMC is a circled M.
The iOverlander [2] database maintained by travelers, My LPG [3] and the Facebook group "Cooking Gas Around the World [4]" provide more information about individual sources per country. Much general information about global LPG use and standardization is available from the World LPG Association [ 5 ] and the AEGPL [ 6 ]