1 Scope
This document specifies the requirements for valves useable on tanks with a minimum
working pressure greater than 50 kPa for the transport of dangerous goods by road
and rail for the following functions:
Tanks for transport of liquid products:
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— secondary closure of bottom discharge lines;
-
— primary closure on top of the tank (liquid, air, other connections);
-
— aeration valve on top of the tank;
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— and other valves as specified in Annex F of EN 14564:2019 according to the scope of this document.
Tanks for gases:
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— secondary closure of bottom discharge lines;
-
— secondary closure on top of the tank for poisonous gases: liquid phase and gas phase;
-
— and other valves as specified in Annex F of EN 14564:2019.
This includes the following types of closures:
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— valves (e.g. spindle operated valves, plug and ball valves, butterfly valves and gate valves);
-
— dry disconnect couplings.
Primary closures of the gas phase at the foot of a tank for liquefied gas are covered
by the requirements of foot valves in EN 14433.
NOTE The standard is also applicable to liquefied gases including LPG, however, for a dedicated LPG standard see EN 13175 [3]