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Natural gas
Natural gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, with up to 20 % of other hydrocarbons as well as impurities in varying amounts such as carbon dioxide. Natural gas is widely used as an important energy source in many applications including heating buildings, generating electricity, providing heat and power to industry, as fuel for vehicles and as a chemical feedstock in the manufacture of products such as plastics and other commercially important organic chemicals.
Industry: Energy
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Natural gas
backseat
Energy; Natural gas
An auxiliary seat in the bonnet to enable packing replacement while the valve is under pressure.
ball valve
Energy; Natural gas
A type of valve whose flow control element is a ball with a circular passage through it and that rotates 90 deg from open to closed.
blowdown
Energy; Natural gas
The difference between the set (opening) pressure and the disc reseating pressure of a pressure relief valve, which is usually expressed as a percentage of the set pressure.
body
Energy; Natural gas
The part of a valve that houses the flow control element, contains seating surface, retains fluid pressure, and in most valve designs, has ends for attaching to connecting pipe.
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