DIN EN ISO 8434-1:2008
Metallic tube connections for fluid power and general use - Part 1: 24 degree cone connectors (ISO 8434-1:2007); German version EN ISO 8434-1:2007

Standard No.

DIN EN ISO 8434-1:2008

Release Date

2008

Published By

German Institute for Standardization

Status

Be replaced

Replace By

DIN EN ISO 8434-1:2018

DIN EN ISO 8434-1 Berichtigung 1:2009

Latest

DIN EN ISO 8434-1:2018-11

Replace

DIN EN ISO 8434-1:1997 DIN EN ISO 8434-1:2005 DIN EN ISO 8434-4:2000

Scope

This pad of ISO 8434 specifies the general and dimensional requirements for 24' cone connectors using cutting ring and O-ring seal cone (referred to as DKO) suitable for use with ferrous and non-ferrous tubes with outside diameters from 4 mm to 42 mm inclusive. These connectors are for use in fluid power and general applications within the limits of pressure and temperature specified in this part of ISO 8434. They are intended for the connection of plain end tubes and hose fittings to ports in accordance with ISO 6149-1, ISO 1179-1 and ISO 9974-1. (See ISO 12151-2 for related hose fitting specification.) These connectors provide full-flow connections in hydraulic systems operating to the working pressures shown in Table 1. Because many factors influence the pressure at which a system performs satisfactorily, these values are not to be understood as guaranteed minimums. For every application, sufficient testing will need to be conducted and reviewed by both the user and manufacturer to ensure that required performance levels are met. NOTE 1 For new designs in hydraulic fluid power applications, see the requirements given in 9.6. Where the requirements of the application allow for the use of elastomeric seals, connector designs that conform to International Standards and incorporate elastomeric sealing are preferred. NOTE 2 For use under conditions outside the pressure and/or temperature limits specified, see 5.4. This part of ISO 8434 also specifies a performance and qualification test for these connectors.

DIN EN ISO 8434-1:2008 Referenced Document

• ISO 1127 Stainless steel tubes; dimensions, tolerances and conventional masses per unit length
• ISO 1179-1 Connections for general use and fluid power.Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing.Part 1: Threaded ports*， 2013-11-01 Update
• ISO 1179-2 Connections for general use and fluid power — Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing — Part 2: Heavy-duty (S series) and light-duty (L series) stud ends*， 2022-11-10 Update
• ISO 1179-4 Connections for general use and fluid power - Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing - Part 4: Stud ends for general use only with metal-to-metal sealing (type B)
• ISO 12151-2 Connections for hydraulic fluid power and general use — Hose fittings — Part 2: Hose fittings with ISO 8434-1 24° cone connector ends with O-rings*， 2022-10-14 Update
• ISO 19879:2005 Metallic tube connections for fluid power and general use - Test methods for hydraulic fluid power connections
• ISO 228-1:2000 Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation
• ISO 261 ISO general purpose metric screw threads - General plan
• ISO 3304 Plain end seamless precision steel tubes; Technical conditions for delivery
• ISO 3305 Plain end welded precision steel tubes; Technical conditions for delivery
• ISO 3601-3:2005 Fluid power systems - O-rings - Part 3: Quality acceptance criteria
• ISO 4759-1 Tolerances for fasteners - Part 1: Bolts, screws, studs and nuts - Product grades A, B and C
• ISO 48 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD)*， 2010-09-01 Update
• ISO 5598:1985 Fluid power systems and components; Vocabulary Bilingual edition
• ISO 6149-1 Connections for hydraulic fluid power and general use — Ports and stud ends with ISO 261 metric threads and O-ring sealing — Part 1: Ports with truncated housing for O-ring seal*， 2022-06-13 Update
• ISO 6149-2 Connections for hydraulic fluid power and general use - Ports and stud ends with ISO 261 metric threads and O-ring sealing - Part 2: Dimensions, design, test methods and requirements for heavy-duty (S series) stud ends
• ISO 6149-3 Connections for hydraulic fluid power and general use - Ports and stud ends with ISO 261 metric threads and O-ring sealing - Part 3: Dimensions, design, test methods and requirements for light-duty (L series) stud ends
• ISO 9227 Corrosion tests in artificial atmospheres — Salt spray tests — Amendment 1: Footnote of Warning*， 2024-02-19 Update
• ISO 965-1:1998 ISO general purpose metric screw threads - Tolerances - Part 1: Principles and basic data
• ISO 9974-1 Connections for general use and fluid power - Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing - Part 1: Threaded ports
• ISO 9974-2 Connections for general use and fluid power - Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing - Part 2: Stud ends with elastomeric sealing (type E)
• ISO 9974-3 Connections for general use and fluid power - Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing - Part 3: Stud ends with metal-to-metal sealing (type B)

DIN EN ISO 8434-1:2008 history

• 2018 DIN EN ISO 8434-1:2018-11 Metallic tube connections for fluid power and general use - Part 1: 24° cone connectors (ISO 8434-1:2018); German version EN ISO 8434-1:2018
• 2018 DIN EN ISO 8434-1:2018 Metallic tube connections for fluid power and general use - Part 1: 24° cone connectors (ISO 8434-1:2018); German version EN ISO 8434-1:2018
• 2008 DIN EN ISO 8434-1:2008 Metallic tube connections for fluid power and general use - Part 1: 24 degree cone connectors (ISO 8434-1:2007); German version EN ISO 8434-1:2007
• 1997 DIN EN ISO 8434-1:1997 Metallic tube connections for fluid power and general use - Part 1: 24° compression fittings (ISO 8434-1:1994); German version EN ISO 8434-1:1997