two-way valve
41Formula Two — Marc Surer s 1979 Championship winning car Formula Two, abbreviated to F2, is a type of open wheel formula racing. It was replaced by Formula 3000 in 1985, but the FIA announced in 2008 that Formula Two would return for 2009 in the form of the… …
42Reversing valve — A reversing valve removed from an HVAC heat pump for replacement. A reversing valve a type of valve and is a component in a heat pump, that changes the direction of refrigerant flow.[1][2] …
43Four-way — a. Allowing passage in either of four directions; as, a four way cock, or valve. Francis. [1913 Webster] {Four way cock}, a cock connected with four pipes or ports, and having two or more passages in the plug, by which the adjacent pipes or port …
44Four-way cock — Four way Four way , a. Allowing passage in either of four directions; as, a four way cock, or valve. Francis. [1913 Webster] {Four way cock}, a cock connected with four pipes or ports, and having two or more passages in the plug, by which the… …
45Earthquake Valve — An earthquake valve or seismic valve is an automatic way to shut off the low pressure regulated gas supply to a structure during a major earthquake and/or if a pipe is broken. These are applicable both to utility supplied natural gas and to… …
46Bicuspid valve — One of the four valves of the heart, this valve is situated between the left atrium and the left ventricle. It permits blood to flow one way only, from the left atrium into the left ventricle This valve is more commonly called the mitral valve… …
47Four-way cock — The four way cock is a fluid control valve of considerable antiquity. The valve body has four ports equally spaced round the valve chamber and the plug has two passages to connect adjacent ports. Its was used to control the flow of steam to the… …
48Balanced valve — Balance Bal ance (b[a^]l ans), v. t. [imp. & p. p. {Balanced} (b[a^]l anst); p. pr. & vb. n. {Balancing} (b[a^]l an*s[i^]ng).] [From {Balance}, n.: cf. F. balancer.] 1. To bring to an equipoise, as the scales of a balance by adjusting the… …
49Leaf valve — Leaf Leaf (l[=e]f), n.; pl. {Leaves} (l[=e]vz). [OE. leef, lef, leaf, AS. le[ a]f; akin to S. l[=o]f, OFries. laf, D. loof foliage, G. laub, OHG. loub leaf, foliage, Icel. lauf, Sw. l[ o]f, Dan. l[ o]v, Goth. laufs; cf. Lith. lapas. Cf. {Lodge}.] …
50Timeline of steam power — See Steam engine, Steam power during the Industrial Revolution. Steam power developed slowly over a period of several hundred years, progressing through expensive and fairly limited devices in the early 1600s, to useful pumps for mining in 1700,… …
