What is BS EN 15611 about?
BS EN 15611 is applicable to relay valves designated 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 devices.
BS EN 15611 specifies the requirements for the design, manufacture, and testing of relay valves.
NOTE1: BS EN 15611 covers one-stage relay valves and relay valves adjusting the brake cylinder pressure in response to a change in vehicle speed or load that is either continuously variable or in two or more stages, i.e. empty – loaded.
NOTE2: Relay valves operating with other pressures, in particular the brake pipe pressure, are not included.
Who is BS EN 15611 for?
BS EN 15611 on railway braking relay valves is useful for:
- Railway engineers
- Manufacturers of railway brakes
Why should you use BS EN 15611?
A railway braking relay valve is used to control a pneumatic output pressure as a function of the variation of one or more input pressures. BS EN 15611 provides the requirements for the design, manufacture, and testing of railway braking relay valves.
BS EN 15611 gives the functional requirements with minimum output pressure and environmental conditions.
Also, provides a type test of an individual relay valve in order to assess the performance of the relay valve.
Furthermore, BS EN 15611 helps you manufacture railway braking relay valves to control the input and output pressure to achieve the air inflation, air discharge, or pressure maintaining function, thereby controlling the braking force of vehicles or trains for a smooth run on the track.
What’s changed since the last update?
BS EN 15611:2020 supersedes EN 15611:2008+A1:2010. BS EN 15611:2020 includes some technical changes with respect to EN 15611:2008+A1:2010. These include:
- Normative references have been updated
- Terms and definitions have been revised
- Requirements on design, materials, type testing, in-service assessment, markings have been revised