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Energy

Anything related to the production or supply of energy in any form.

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Energy > Natural gas

stem nut

Energy; Natural gas

See yoke nut.

stop valve

Energy; Natural gas

A valve used only for starting and stopping fluid flow.

stop-check valve

Energy; Natural gas

A lift check valve design the also has a stem that can be used to hold the disc against it seat and have the valve function as a stop valve; also called a non-return valve.

stud

Energy; Natural gas

A bolt, threaded on both ends, often used in bolting together bodies and bonnets or bodies and closures.

stuffing box

Energy; Natural gas

The annular chamber provided around a valve stem in a sealing system into which deformable packing is placed. Sometimes called packing chamber.

swing check valve

Energy; Natural gas

A check valve design in which the flow control element rotates about an axis that is perpendicular to the fluid path and is outside the fluid path and the flow control element.