DIN ISO 12151-3:2012-08

This document has been prepared by Working Committee NA 060-36-40 "Rohr- und Schlauchleitungen sowie Verbindungselemente" ("Pipelines, hose assemblies and connectors") of Technical Section Fluid power systems of the Mechanical Engineering Standards Committee (NAM) at DIN. It is the translation of the International Standard ISO 12151-2 which has been prepared in collaboration with German experts in Working Group ISO/TC 131/SC 4/WG 6 "Methods for connecting hose couplings and tubes to connectors". The second edition of ISO 12151-3 cancels and replaces the first edition (ISO 12151-3:2004). ISO 12151 consists of the following parts, under the general title "Connections for hydraulic fluid power and general use - Hose fittings": * Part 1: Hose fittings with ISO 8434-3 O-ring face seal ends * Part 2: Hose fittings with ISO 8434-1 24 degree cone connector ends with O-rings * Part 3: Hose fittings with ISO 6162-1 or ISO 6162-2 flange ends * Part 4: Hose fittings with ISO 6149 metric stud ends * Part 5: Hose fittings with ISO 8434-2 37 degree flared ends * Part 6: Hose fittings with ISO 8434-6 60 degree cone ends Working Committee NA 060-36-40 AA decided to adopt only Part 2 and Part 3 of the International Standard as a DIN ISO into the German body of standards. This standard differs from DIN ISO 12151-3:2004-01 as follows: a) Normative references have been updated and, in particular, references to ISO 6162 have been replaced by references to the subsequent standards series ISO 6162-1 and ISO 6162-2. Referenced standards are now undated (see clause 2). b) Hose assemblies with intermediate sizes have been introduced for straight flange hose fittings (S) and 45° elbow flange hose fittings (E45) (see Tables 2 and 3). Previous editions are DIN ISO 12151-3:2004-01, DIN 20078-10:1982-02 and DIN 20078-12:1982-02. This part of ISO 12151 specifies the general and dimensional requirements for the design and performance of flange hose fittings, made of carbon steel, for nominal hose inside diameters of 12,5 mm to 51 mm inclusive, in accordance with ISO 4397, for use with ports and clamps in accordance with ISO 6162-1 and ISO 6162-2. These hose fittings are for use in hydraulic fluid power systems with hoses that meet the requirements of the respective hose standards and in general applications with suitable hoses.