BS EN 144-2:2018 pdf download

BS EN 144-2:2018 pdf download

BS EN 144-2:2018 pdf download.Respiratory protective devices – Gas cylinder valves
1 Scope
This European Standard specifies the dimensions, tolerances and marking requirements of outlet connections for connecting regulators and cylinder valves for respiratory protective devices except those for diving applications.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 144- 1, Respiratory protective devices – Gas cylinder valves – Part 1: Inlet connections
EN ISO 12209, Gas cylinders – Outlet connections for gas cylinder valves for compressed breathable air (ISO 12209)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 144-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
●IEC Electropedia: available at http:/ /
●ISO Online browsing platform: available at http:/ /
4 Dimensional and tolerance requirements
4.1 General
The outlet connections specified in this European Standard refer to the cylinder valve outlet and a mating connection. Use of the specified filling connector is essential to ensure the safe use of each connection at its intended working pressure.
4.2 Classification
For the purpose of this European Standard the outlet connections are classified as following:
a) Type A1: working pressure of breathable air up to 232 bar;
b) Type A2: working pressure of breathable air above 232 bar up to 300 bar;
c) Type A3: working pressure of breathable air above 300 bar up to 400 bar;
d) Type 01: working pressure of oxygen up to 232 bar;
e) Type 02: working pressure of oxygen above 232 bar up to 300 bar;
f) Type M1: working pressure of oxygen/nitrogen mixtures up to 232 bar;
g) Type M2: working pressure of oxygen/ nitrogen mixtures above 232 bar up to 300 bar.
The cylinder valve and gas cylinder shall be tested against the maximum working pressure of the pressure range of the connection (i.e. 232 bar, 300 bar or 400 bar).