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Energy
Anything related to the production or supply of energy in any form.
23Categories 123009Terms
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Energy > Natural gas 
flanged end
Energy; Natural gas
A valve end that has an integral flange for bolting to a connecting pipe having a similar flange.
flapper
Energy; Natural gas
The flow control element of a swing check valve; also called a disc or a clapper.
flat face (FF)
Energy; Natural gas
A flange surface in which the gasket sealing area is the entire surface from the ID to the outside edge. Usually used for class 125 cast iron valves.
flexible seat
Energy; Natural gas
A seat design of a ball valve that provides controlled deformation of the non-metallic seat rings when the valve is assembled.
flexible-wedge gate
Energy; Natural gas
A wedge design flwo control element of a gate valve made of a singple piece that has a groove arround its perimeter to provide flexibility and some movement of its seating ...
floating ball
Energy; Natural gas
A flow control element of a ball valve that is held in position in the valve body solely by the seat rings of the valve.
flow characteristic
Energy; Natural gas
The relationship between the fluid flow rate through a valve and the position of the flow control element of the valve.
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