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Energy
Anything related to the production or supply of energy in any form.
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Energy > Natural gas 
negative position
Energy; Natural gas
The installation position of a multiport valve such that fluid inlet pressure can be into a closed body opening, thereby retarding vavle sealing.
nominal pipe size (NPS)
Energy; Natural gas
Dimensionless number used to indicate sizes of pressure pipe and valves - used interchangeably with valve size in inches.
closure
Energy; Natural gas
The ends of a bolted construction ball valve, bolted to the body, which often contain the seat rings.
closure element
Energy; Natural gas
The moving part of a valve, positioned in the flow stream, which controls the flow through the valve, e.g., wedge, plug, clapper, ball.
cold working pressure (CWP)
Energy; Natural gas
The maximum allowable pressure under non-shock conditions at ambient temperature ( -20° F to +100° F).
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