ISO 8434 consists of the following parts, under the general title Metallic tube connections for fluid power and general use:
⎯Part 1: 24° cone connectors
⎯ Part 2: 37° flared connectors
⎯ Part 3: O-ring face seal connectors
⎯ Part 4: 24° cone connectors with O-ring weld-on nipple
⎯ Part 6: 60° cone connectors with or without O-ring sealing
Today this blog will give you a comprehensive introduction about ISO 8434-6 standard.
ISO 8434-6: 60° Cone Connectors
This part of ISO 8434 specifies general and dimensional requirements for the design and performance of 60° cone connectors and braze-on nipples with or without O-ring sealing, made of stainless steel or steel for tube outside diameters of 6 mm through 50 mm, inclusive, or hose sizes 5 through 51, 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 tubes and hose fittings to ports in accordance with ISO 6149-1 and ISO 1179-1.
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 shall not be understood as guaranteed minimums. For every application, it is recommended that sufficient testing beconducted and reviewed by both the user and manufacturer to ensure that required performance levels are met.
ISO 8434-6: Connector bodies
Bodies shall be manufactured from carbon steel or stainless steel that will provide the minimum
pressure/temperature requirements specified in Clause 5. They shall have characteristics that make them suitable for use with the fluid to be conveyed and that will provide an effective joint. Weld-on nipples shall be made of materials classified as suitable for welding.
ISO 8434-6: Nuts
Nuts to be used with carbon steel bodies shall be made of stainless steel or carbon steel and those for use with stainless steel bodies shall be made of stainless steel, unless otherwise specified.
ISO 8434-6: O-ring
Unless otherwise specified, for use with petroleum base hydraulic fluids at the pressure and temperature
requirements in Clause 5 and Table 1 and for testing, the O-rings shall be made of NBR (nitrile) with a hardness of (90 ±5) IRHD, measured in accordance with ISO 48, shall conform to the dimensions given in Table 5 and shall meet or exceed the O-ring quality acceptance criteria for grade N of ISO 3601-3. In those cases where the pressure and temperature requirements of this part of ISO 8434 and/or the hydraulic fluid used in the system differ from those specified in Clause 5 and Table 1, the connector manufacturer shall be consulted to ensure that an appropriate O-ring material is selected.
Pressure/temperature requirements
60° cone connectors in conformance with this part of ISO 8434 made of stainless steel or carbon steel shall meet or exceed without leakage the requirements from a vacuum of 6,5 kPa (0,065 bar) absolute pressure to the rated pressures given in Table 1 when used at temperatures between –40 °C and +120 °C. For stud end connectors, the upper limit shall be the lower of the rated pressure given in Table 1 and the rated pressure for the relevant stud end, i.e., ISO 1179-2, ISO 1179-3 or ISO 6149-3.
Details of End For Male Connector
Details of Swivel Female End with O-ring Sealing Nipple (style A)
Details of End For Swivel Female Connector (style B)
Interface Dimensions of Male and Swivel Female 60° Cone Connectors
Braze-on Nipple
Weld-on Nipple
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