BS EN 14432:2023

Tanks for the transport of dangerous goods. Tank equipment for the transport of liquid chemicals and liquefied gases. Product discharge and air inlet valves. | Status: Current

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:

• — secondary closure of bottom discharge lines;
• — primary closure on top of the tank (liquid, air, other connections);
• — aeration valve on top of the tank;
• — and other valves as specified in Annex F of EN 14564:2019 according to the scope of this document.

Tanks for gases:

• — 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:

• — 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]