18 Terms
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Control valves
Industry: Industrial valves
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Control valves
travel
Industrial valves; Control valves
The distance the plug or stem moves in order to go from a full-closed to a full-open position. Also called stroke.
hysteresis
Industrial valves; Control valves
The difference between up-scale and down-scale results in instrument response when subjected to the same input approached from the opposite direction. Example: A control valve has a stroke of 1. 0 ...
end connection
Industrial valves; Control valves
The configuration provided to make a pressure-tight joint to the pipe carrying the fluid to be controlled. The most common of these connections are threaded, flanged, or welded.
bonnet
Industrial valves; Control valves
The bonnet or bonnet assembly is that portion of the valve pressure retaining boundary which may guide the stem and contains the packing box and stem seal. The bonnet may be integral to the valve ...
packing box
Industrial valves; Control valves
The chamber located in the bonnet which surrounds the stem and contains the packing and other stem-sealing components.
body
Industrial valves; Control valves
The body of the valve is the main pressure boundary. It provides the pipe connecting ends and the fluid flow passageway. It can also support the seating surface and the valve closure member.
flangeless body
Industrial valves; Control valves
This type of valve is very economical from a manufacturing and stocking standpoint because a valve that is rated as a 600# ANSI valve can also be used between 150# and 300# ANSI flanges thus ...
