NS EN 15611 : 2008 + A1 2010
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
RAILWAY APPLICATIONS - BRAKING - RELAY VALVES
01-05-2020
12-01-2013
Describes the requirements for the design, manufacture and testing of relay valves. Applies to relay valves designed to control the brake cylinder pressure of compressed air brakes fitted to railway vehicles, in association with an air brake distributor valve or other control device, and in response to a change in vehicle load that is either continuously variable or in two stages i.e. empty - loaded. Relay valves operating with other pressures, in particular the brake pipe pressure, are not included.
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