NF EN 15611

Railway applications - Braking - Relay valves

Le présent document s'applique aux relais pneumatiques conçus pour commander la pression au cylindre de frein des freins à air comprimé montés sur des véhicules ferroviaires, conjointement avec un distributeur de frein à air ou un autre dispositif de commande. Il s'applique aux relais pneumatiques à un étage de pression et aux relais pneumatiques qui régulent la pression au cylindre de frein en fonction des variations de la vitesse ou de la charge du véhicule, soit de manière continue, soit par deux étages de pression ou plus, comme les relais vide/chargé. Les relais pneumatiques fonctionnant avec d'autres pressions, notamment la pression de conduite générale, ne sont pas inclus. Le présent document spécifie les exigences relatives à la conception, à la fabrication et aux essais des relais pneumatiques.

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