turn-valve
71Directional control valve — Directional control valves are one of the most fundamental parts in hydraulic machinery. They allow fluid flow into different paths from one or more sources. They usually consist of a piston inside a cylinder which is mechanically or electrically …
72Flow control valve — Globe control valve with the pneumatic actuator and smart positioner A flow control valve regulates the flow or pressure of a fluid. Control valves normally respond to signals generated by independent devices such as flow meters or temperature… …
73Variable valve actuation — Variable Valve Actuation, or VVA, is a generalised term used to describe any mechanism or method that can alter the shape or timing of a valve lift event within an internal combustion engine. There are many ways in which this can be achieved,… …
74Float valve — A float valve is a mechanical feedback mechanism that regulates fluid level by using a float to drive an inlet valve so that a higher fluid level will force the valve closed while a lower fluid level will force the valve open. This is an example… …
75Baker valve gear — was the main competitor to Walschaerts valve gear for steam locomotives in the United States. Strictly speaking it was not a valve gear but a variable expansion mechanism adapted to the Walschaerts layout replacing the expansion link and sliding… …
76Saddle valve — A saddle valve is a valve used to supply liquid where a low volume, low pressure stream is required. The name is derived from the fact that it is mounted in such a way that it saddles the line, mounting it from both sides.They are typically used… …
77Leaf 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}.] …
78Bagnall-Price valve gear — is a type of steam engine valve gear developed at locomotive manufacturer W.G. Bagnall as an alternative to the more common Walschaerts valve gear. The gear was patented in 1903 by W.G. Bagnall and T. S. Price, the manager of the works. Layout… …
79To turn over a new leaf — 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}.] …
80Hagmann valve — The Hagmann Valve works similarly to any other open wrapped trombone valve configuration. Pulling the Trigger causes the spindle to turn, guiding the air through a different set of tubes. It is different from the rotory valve in that the angles… …
