the valve
61valve rotator — A unit that is placed on the end of the valve stem so that when the valve is opened and closed, the valve will rotate a small amount with each opening and closing. This gives longer valve life. Also called roto cap …
62valve base — /ˈvælv beɪs/ (say valv bays) noun 1. the part of a radio valve envelope from which the connecting pins to the various electrodes project, enabling the valve to be fitted into a valve socket and thus connected to the rest of the circuit. 2. the… …
63valve socket — /ˈvælv sɒkət/ (say valv sokuht) noun a plastic or ceramic connector, attached to the chassis of an electronic device, into which the pins of the valve base connect, enabling the valve to be connected to the rest of the circuit. Also, valve holder …
64valve overlap — A certain period in which both the intake and exhaust valve are partially open. The intake is starting to open while the exhaust is not yet closed. It is usually expressed in degrees of crankshaft rotation and determined by the valve timing,… …
65valve seat — noun : a circular ring of heat resistant bronze or steel on which a valve of an internal combustion engine rests when closed * * * valve seat, the rim of the valve port on which the valve rests when closed, made of specially hardened steel… …
66valve — noun ADJECTIVE ▪ safety ▪ shut off ▪ non return, one way ▪ exhaust, inlet ▪ drain …
67valve seat insert — A hardened steel valve seat that may be removed and replaced. The use of valve seat inserts dispenses with the need for lead in the fuel to act as a lubricant between the valve head and seat Also see insert …
68valve head — n. the part of a vertically opening valve that is lifted off the valve aperture to open the valve …
69Valve, bicuspid — One of the four valves of the heart, this one is situated between the left atrium and the left ventricle. It permits blood to flow one way only, from the atrium into the ventricle. The valve is more commonly called the mitral valve because its… …
70valve seat ring — A ring shaped insert of a harder metal than that of the cylinder head; the use of valve seat inserts dispenses with the need for lead in the fuel to act as a lubricant between the valve head and seat …
