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A kind of slide valve. See Slide valve, under Slide.

To contract, as a sail, into a narrower compass; as, to balance the boom mainsail. Balanced valve. See Balance valve, under Balance, n.

reasons, with consequent indecision and doubt. Equilibrium valve (Steam Engine), a balanced valve. See under Valve.

A small hand-operated valve to admit liquid to operate a valve difficult to turn by hand.

The lid or cover of a pot. Potlid valve, a valve covering a round hole or the end of a pipe or pump barrel, resembling a potlid in form.

e of the colon before it terminates in the rectum. See Illust. under Digestive. -- Sigmoid valves. (Anat.) See Semilunar valves, under Semilunar.

It is situated in the steam chest, and moved by the valve gear. It is sometimes called a D valve, -- a name which is also applied to a semicylindrical pipe used as a sliding valve. In the illustration, a is the cylinder of a steam engine, in which plays the piston p; b the steam chest, receiving its supply from the pi…

Of or pertaining to the tricuspid valves; as, tricuspid obstruction. Tricuspid valve (Anat.), the valve, consisting of three triangular membranous flaps, at the opening of the right auricle into the right ventricle in the heart of most mammals; -- sometimes called the tricuspid valves, each flap being regarded as a val…

er in which a valve works; especially (Steam Engine), the steam chest; -- called in England valve box, and valve casing. See Steam chest, under Steam. -- Valve face (Mach.), that part of the surface of a valve which comes in contact with the valve seat. -- Valve gear, or Valve motion (Steam Engine), the system of par…