NF E29-680

Gas cylinders - Taper screw thread for valve stem and cylinder neck assembly - Nominal diameter 25,8, taper 3/26 (6° 38'), 14 Tpi SI

Le présent document fixe les dimensions du raccordement par assemblage fileté conique d'un robinet) sur une bouteille destinée à contenir un gaz comprimé ou liquéfié sous pression, dans les conditions prévues dans la norme NF E 29-671. Le présent document s'applique aux bouteilles métalliques pour gaz comprimés et liquéfiés sous pression de contenance en eau au moins égale à 4 litres et au plus égale à 150 litres.

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