20 Terms
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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
Specification
Energy; Natural gas
A document that defines the requirements that a finished product must conform to - may include chemical and mechanical properties, tolerances, marking, shipping, etc.
Spherical seat
Energy; Natural gas
A seat design of a globe valve in which the disc has a spherical seating surface taht maters with a conical seat ring seating surface to produce line contact.
Split-wedge gate
Energy; Natural gas
A flow control element of a gate valve made of two separate pieces.
Spring-return actuator
Energy; Natural gas
A valve Actuator that compressed an internal spring when the actutor moves the flow control element away from its starting position (open or closed) and then uses the energy stored in the spring to ...
Spur gear
Energy; Natural gas
The simplest of gears - in a gear set, the pinion and ring gear are aligned on parallel shafts. Can be added to another gear operator to further increase the mechanical advantage afforded by the ...
