NBR11725 de 11/2008

Esta Norma padroniza os formatos e as dimensões dos bocais de cilindros utilizados para armazenamento de gases comprimidos, liquefeitos ou dissolvidos sob pressão, bem como um critério que permite selecionar essas conexões. This Standard specifies the forms and dimensions of valve outlet and inlet connections to cylinders used to store compressed, liquefied or dissolved gases, as well as a criterion that allows to select these connections.This Standard is not applied:a) cylinders whose water capacity is up to 1,8 L;b) valves of LPG cylinders (liquefied petroleum gas);c) valves of GNV cylinders (natural gas vehicular);d) valves of devices and equipment to fire protection;e) valves type pin-indexed (Yoke);f) equipment valves for autonomous breath. ISBN: 978-85-07-01054-8