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Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

High level valve noise is usually indicative of severe impacts associated with the opening and closing of the valves. Impacts at the valve closing are sometimes referred to as valve hammer and can result in damage to the sealing surfaces. Impacts at the valve opening, which may be identified by damage to the back side of the valve disc, are due to the over pressure and under pressure spikes which can result in fatigue failures of the components.  2, fiche 1, Anglais, - valve%20hammer

Fiche 1,  Justifications,  Français

Record number: 1, Textual support number: 1 DEF

Perturbation apportée à un courant liquide du fait de la fermeture d'un clapet.  1, fiche 1, Français, - coup%20de%20clapet

Record number: 1, Textual support number: 1 OBS

Ce coup de clapet est très bruyant, il soumet le matériel à des contraintes pouvant aller jusqu'à la rupture et il engendre un coup de bélier en retour vers la conduite (Les stations de pompage d'eau, 1977, p. 143).  1, fiche 1, Français, - coup%20de%20clapet

Fiche 1,  Justifications,  Espagnol