UNE-EN ISO 13341:2026

This document specifies the procedures to be followed when connecting cylinder valves to gas cylinders. Itspecifically applies to all valve and cylinder combinations connected with ISO screw threads as specified inISO 11363-1 and ISO 15245-1. It defines procedures and practices for inspection and preparation prior tovalving for both taper and parallel screw threads.Torque values are given in Annex A for steel and aluminium alloy gas cylinders including composite cylinderswith steel or aluminium alloy boss.NOTE The procedures and practices specified in this document can be beneficially applied to other valve tocylinder screw thread connection systems. ISO/TR 11364 lists the valve to gas cylinder threads in use worldwide. Itgives details of the thread identification codes, whether the threads are interchangeable with ISO threads and if thetaping procedure and torque values specified in this document can be used. ISO/TR 11364 gives clear guidance for themethod and torque for all listed inlet threads, which are not interchangeable.