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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 DEF

A straight-through shut-off valve used to control the flow of fluids, whose two disks are hinged on a common shaft to permit flow only in one direction.  4, fiche 1, Anglais, - butterfly%20valve

Record number: 1, Textual support number: 1 CONT

Butterfly valves are among the family of quarter-turn valves and work very similar to ball valves. The "butterfly" is a disk connected to a rod. It closes when the rod rotates the disc by a quarter turn to a position perpendicular to the flow direction... When the valve opens, the disk is rotated back to allow the flow.  5, fiche 1, Anglais, - butterfly%20valve

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Butterfly valves are tight closing, and they usually have a rubber or a rubber-composition seat that is bonded to the valve body.  6, fiche 1, Anglais, - butterfly%20valve

Record number: 1, Textual support number: 3 CONT

The butterfly valve has a baffle that pivots in the waterway to interrupt or permit the flow of water through the valve.  6, fiche 1, Anglais, - butterfly%20valve

Record number: 1, Textual support number: 1 OBS

butterfly valve: designation officially approved by the Lexicon Project Committee (New Brunswick).  7, fiche 1, Anglais, - butterfly%20valve

Record number: 1, Textual support number: 2 OBS

butterfly valve; butterfly-type valve: designations officially approved by the Aeronautical Terminology Standardization Committee (ATSC) - Flight Operations.  8, fiche 1, Anglais, - butterfly%20valve

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

Robinet dont le corps est un cylindre dans lequel se déplace angulairement autour d'un axe un obturateur, dit papillon.  5, fiche 1, Français, - vanne%20papillon

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Les vannes à papillon sont très étanches à la fermeture et sont habituellement dotées d'un siège en caoutchouc ou en matériau composite fixe à l'intérieur du corps.  6, fiche 1, Français, - vanne%20papillon

Record number: 1, Textual support number: 2 CONT

La vanne à papillon comporte un obturateur qui pivote dans le passage d'eau pour interrompre ou permettre l'écoulement d'eau.  6, fiche 1, Français, - vanne%20papillon

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robinet à papillon : désignation uniformisée par le Comité du projet de lexiques (Nouveau-Brunswick).  7, fiche 1, Français, - vanne%20papillon

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vanne à papillon : désignation uniformisée par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes; vanne à papillon; vanne papillon : termes uniformisés par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Maintenance.  8, fiche 1, Français, - vanne%20papillon

Fiche 1,  Justifications,  Espagnol

Fiche 2,  Justifications,  Anglais

Record number: 2, Textual support number: 1 CONT

The entry from the intermediate pressure hose into the second stage is sealed with a spring-loaded valve. The spring is just strong enough to hold back the intermediate pressure. The valve is also connected to a lever that touches the membrane of the second stage. When a diver inhales, the membrane is pulled inward. This action pushes the lever down. The movement of the lever opens the valve and air can flow into the second stage. When the diver stops inhaling, the membrane moves back to its original position and the second stage valve can close again.  2, fiche 2, Anglais, - second%20stage

Fiche 2,  Justifications,  Français

Record number: 2, Textual support number: 1 CONT

Deuxième étage – [...] le rôle est de réduire davantage la pression jusqu'à ce qu'elle corresponde à la pression ambiante, ce qui permet de respirer sans efforts.  2, fiche 2, Français, - deuxi%C3%A8me%20%C3%A9tage

Fiche 2,  Justifications,  Espagnol

Fiche 3,  Justifications,  Anglais

Record number: 3, Textual support number: 1 CONT

In the normally open mode, pressurised air flows directly through the valve, with the exhaust port closed. When the valve is actuated the pressurised supply is cut off and downstream air can flow back through the valve to exhaust. It is thus an "on-off" switch, controlling a device which has to remain pressurised until the valve is operated...  1, fiche 3, Anglais, - normally%20open

Record number: 3, Textual support number: 1 OBS

This term is used in pneumatic technology.  3, fiche 3, Anglais, - normally%20open

Fiche 3,  Justifications,  Français

Record number: 3, Textual support number: 1 CONT

Notons une difficulté de vocabulaire: les appellations «normalement fermé» et «normalement ouvert» sont utilisées pour les contacts électriques et pour les vannes pneumatiques. Cependant, elles correspondent à des fonctions différentes : une vanne «normalement fermée» établit un circuit lorsqu'elle est actionnée [...]  1, fiche 3, Français, - normalement%20ouvert

Record number: 3, Textual support number: 1 OBS

On utilise ce terme dans le domaine de la pneumatique.  4, fiche 3, Français, - normalement%20ouvert

Fiche 3,  Justifications,  Espagnol

Fiche 4,  Justifications,  Anglais

Record number: 4, Textual support number: 1 DEF

A check valve or other mechanical device used to prevent the unwanted reverse flow of liquids back down a water supply pipe into a well.  1, fiche 4, Anglais, - anti%2Dbackflow%20device

Fiche 4,  Justifications,  Français

Record number: 4, Textual support number: 1 DEF

Dispositif destiné à éviter le refoulement d'un fluide.  1, fiche 4, Français, - antirefouleur

Fiche 4,  Justifications,  Espagnol

Fiche 5,  Justifications,  Anglais

Record number: 5, Textual support number: 1 CONT

A supercharger which is located between the carburetor outlet and the intake manifold of the engine is called an internal supercharger. A supercharger thus located serves to provide a uniform distribution of the fuel-air charge to the various cylinders, as well as to increase the density of the charge. Maintaining a high manifold pressure ahead of the intake valves allows the use of "valve overlap" in the engine, so that the intake valve opens just before the exhaust valve closes at the end of the exhaust stroke. This allows the compressed mixture from the intake manifold to scavenge the spent gases out of the clearance volume of the cylinder and also tends to improve the cooling of the exhaust valve. This cooling is of particular importance when operating at "military" or "take-off" power. With no supercharging between the carburetor and the intake valves, "valve overlapping" would permit exhaust gases to flow back into the intake manifold. This would cause backfiring and dilution of the next charge of mixture with burned exhaust gases.  4, fiche 5, Anglais, - internal%20supercharger

Record number: 5, Textual support number: 1 OBS

There is another difference between internally driven superchargers and turbochargers ... The internal supercharger compresses the fuel/air mixture after it leaves the carburetor or fuel metering device, while the turbocharger compresses the air before it is mixed with metered fuel.  2, fiche 5, Anglais, - internal%20supercharger

Fiche 5,  Justifications,  Français

Fiche 5,  Justifications,  Espagnol

Fiche 6,  Justifications,  Anglais

Record number: 6, Textual support number: 1 DEF

A valve installed in the drill stem to avoid a blowout inside the stem. Flow is possible only in a down direction, allowing mud to be pumped down the stem but preventing any flow back up the stem.  2, fiche 6, Anglais, - inside%20blowout%20preventer

Fiche 6,  Justifications,  Français

Fiche 6,  Justifications,  Espagnol

Fiche 7,  Justifications,  Anglais

Record number: 7, Textual support number: 1 DEF

A valve installed in the drill stem that allows mud to be pumped down the drill stem but prevents flow back up the drill stem...  2, fiche 7, Anglais, - drillpipe%20float%20valve

Fiche 7,  Justifications,  Français

Fiche 7,  Justifications,  Espagnol

Fiche 8,  Justifications,  Anglais

Record number: 8, Textual support number: 1 CONT

Vacuum breakers are basically anti-syphonage preventers and should never be used where there is any possibility of back pressure. They fall into 2 categories : a. Atmospheric Type... b. Pressure Type... The atmospheric type vacuum breaker is designed for intermittent service only. It should never be installed with a shut-off valve on the outlet side. It should only be used where it will be under pressure for short periods(maximum : 12 hours in a 24-hour period), not under pressure most of the time. Typical applications are : a. Washing Machines; b. Lawn Sprinkler Systems; c. Photographic Developing Tanks; and d. Vending Machines. This type of vacuum breaker is mounted directly in the line, and has a limited flow capacity due to the fact that line flow passes through the vacuum breaker.  1, fiche 8, Anglais, - atmospheric%20type%20vacuum%20breaker

Fiche 8,  Justifications,  Français

Record number: 8, Textual support number: 1 CONT

Les brise-vide sont essentiellement des dispositifs anti-siphonnage et ne devraient jamais être utilisés là où il y a risque de contre-pression. Ils se divisent en deux catégories: a) brise-vide de type atmosphérique (...) b) brise-vide de type à pression (...) Le brise-vide de type atmosphérique est conçu uniquement pour un service intermittent. Il ne devrait jamais être monté avec un robinet d'arrêt placé en aval. On ne devrait l'utiliser qu'aux endroits où il n'est sous pression que pendant de courtes périodes (soit 12 heures maximum au cours d'une période de 24 heures). En voici quelques utilisations types: a) machines à laver; b) systèmes d'arrosage de pelouses; c) cuves de développement photographique, et d) machines distributrices. Ce type de brise-vide est monté directement sur la canalisation; il ne convient pas aux installations à fort débit puisque le fluide doit le traverser.  1, fiche 8, Français, - brise%2Dvide%20de%20type%20atmosph%C3%A9rique

Fiche 8,  Justifications,  Espagnol

Fiche 9,  Justifications,  Anglais

Record number: 9, Textual support number: 1 CONT

Even the smallest rabbitry benefits from an automatic or semi-automatic system. The simplest watering system is semi-automatic. There are two types of valves : the dewdrop valve and the pivoting valve. With a pivoting valve, the stem is on a spring. It bends out of the way during drinking; then swings back to stop the water flow. Pivoting and other spring-loaded valves are less sensitive to line pressure.  1, fiche 9, Anglais, - pivoting%20valve

Fiche 9,  Justifications,  Français

Record number: 9, Textual support number: 1 OBS

Proposition d'André Sénécal de la Section technique centrale, Secrétariat d'État.  1, fiche 9, Français, - clapet%20pivotant

Fiche 9,  Justifications,  Espagnol