This document specifies uniform methods for the testing and performance evaluation of metallic tube connections, stud ends for ports and flange connections for use in hydraulic fluid power applications. This document does not apply to the testing of hydraulic quick-action couplings, which is covered by ISO 18869. Tests outlined in this document are independent of each other and document the method to follow for each test. See the appropriate component International Standard for indications of which tests to conduct and for performance criteria. For qualification of the connector, the minimum number of samples specified in this document is tested, unless otherwise specified in the relevant connector standard or as agreed upon by the manufacturer and the user.

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This document specifies sizes and nominal working pressures for seamless and welded precision steel tubes with outside diameters in accordance with ISO 4397, and wall thicknesses and mechanical properties in accordance with ISO 3305. The nominal working pressures included in this document reflect a design factor ratio of 4 to 1 applied to the calculated burst pressures.

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This document specifies a selection of nominal pressures for hydraulic and pneumatic fluid power connectors and associated components. NOTE There can be a need to provide a selection of nominal pressures for connectors and associated components used in applications where the external pressure on the components is greater than the internal pressure, for example vacuum service. A document that deals with this subject will be established in due course.

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This document 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 document. 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 a 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 intended to be understood as guaranteed minimums. For every application, sufficient testing is meant 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 document also specifies a performance and qualification test for these connectors.

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ISO/TS 18409:2018 specifies two methods for collecting a fluid sample to be used to analyse the cleanliness of hydraulic fluid power hoses or hose assemblies within a certain inside diameter and length range (this range includes the majority of hose assemblies of real fluid power applications). The two methods described in this document are intended for collecting only solid particulate contamination; they may not be appropriate for collecting contamination in liquid or grease form. ISO/TS 18409:2018 is a specific application of ISO 18413:2015, specifically Annexes A and B. The scope of ISO/TS 18409:2018 does not include providing efficient and effective cleaning methods for hose assemblies. These methods are recommended for statistical validation of other hose cleaning methods, which are more suitable for systematic processing of large production batches. Contamination analysis is excluded from the scope of this document.

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ISO/TS 17165-2:2018 provides guidelines for selection, routing, fabrication, installation, replacement, maintenance and storage of hose and hose assemblies for hydraulic fluid power systems which are manufactured from hoses conforming to ISO 1436, ISO 3862, ISO 3949, ISO 4079 and ISO 11237, and hose fittings conforming to the ISO 12151 series. NOTE 1 Many of these practices also can be suitable for use with other types of hoses and systems. NOTE 2 Annex A lists examples of actual failure resulting from improper use of hydraulic hose and hose assemblies.

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ISO 6149-4:2017 specifies dimensions and performance requirements for external hex and internal hex port plugs for use with ISO 6149‑1 ports. Port plugs in accordance with this document can be used at working pressures up to 63 MPa (630 bar[1]). The permissible working pressure depends upon the plug end size, materials, design, working conditions, application, etc. Conformance to the dimensional information in this document does not guarantee rated performance. Each manufacturer is expected to perform testing according to the specification contained in this document to assure that components comply with the performance ratings. WARNING: The use of stud ends conforming to this document with ports conforming to the relevant parts of ISO 1179, ISO 9974 and ISO 11926 could lead to a hazardous situation. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

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ISO 6605:2017 specifies uniform test methods for evaluating the performance of hoses and hose assemblies (hoses and attached hose fittings) used in hydraulic fluid power systems. Specific tests and performance criteria for evaluating hoses and hose assemblies used in hydraulic applications are in accordance with the requirements of the respective product (hoses or hose fitting) specifications.

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ISO 9974-4:2016 specifies dimensions and performance requirements for metric external hex and internal hex port plugs for use with ISO 9974‑1 ports. Port plugs in accordance with this document can be used at working pressures up to 63 MPa [630 bar[1]]. The permissible working pressure depends upon the plug end size, materials, design, working conditions, application, etc. Conformance to the dimensional information in this document does not guarantee rated performance. NOTE The Introduction of this document gives recommendations for ports and stud ends to be used for new designs in hydraulic fluid power applications. [1] 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2.

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ISO/TS 11672:2016 collects the various designation and nomenclature schemes specified in International Standards for connectors and similar products standardized by ISO/TC 131/SC 4. It establishes a uniform nomenclature structure to facilitate standardization of product names used for threaded connectors, push-in connectors, flanges, hose fittings, port plugs and quick-action couplings. The designation and nomenclature established in this document are applicable for procurement purposes when agreed to by user and supplier.

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ISO 4397:2011 specifies information on the nominal outside diameters of rigid or semi-rigid tubing and nominal hose sizes to be used with hydraulic and pneumatic fluid power connectors and associated components: a) nominal outside diameters for rigid or semi-rigid tubes, irrespective of material composition, used in fluid power; b) a list of nominal sizes for hoses made of rubber or plastic used in fluid power.

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ISO 12151-1:2010 specifies the general and dimensional requirements for the design and performance of hose fittings with O-ring face seal ends in accordance with ISO 8434-3, made of carbon steel, for nominal hose inside diameters of 6,3 mm to 38 mm inclusive, in accordance with ISO 4397. Materials other than carbon steel can be supplied as agreed between the manufacturer and user. These hose fittings are used in hydraulic fluid power systems with hose that meets the requirements of the respective hose standards and in general applications with suitable hose.

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ISO 12151-3:2010 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. Materials other than carbon steel can be supplied as agreed between the manufacturer and user. These fittings are used in hydraulic fluid power systems with hose that meets the requirements of the respective hose standards and in general applications with suitable hoses.

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ISO 8434-6:2009 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 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 ISO 8434-6:2009.

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ISO 17165-1:2007 specifies requirements for hose assemblies that are manufactured from hoses that conform to ISO 3949 and to all parts of ISO 1436, ISO 3862, ISO 4079 and ISO 11237 and hose fittings with elastomeric seals that conform to ISO 12151-1, ISO 12151-2, ISO 12151-3 and ISO 12151-6. ISO 17165-1:2007 contains information of the most important criteria for the selection of preferred types of hoses and hose fittings with elastomeric sealing for use in hydraulic fluid power applications.

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ISO 8434-2:2007 specifies general and dimensional requirements for the design and performance of 37° flared connectors that are suitable for use with ferrous and non-ferrous tubes with outside diameters from 6 mm to 50,8 mm, inclusive. These connectors are for use in fluid power and general applications within the limits of pressure and temperature specified. They are intended for the connection of tubes and hose fittings to ports in accordance with ISO 6149‑1, ISO 1179‑1, ISO 9974‑1 and ISO 11926‑1. (See ISO 12151‑5 for related hose fitting specification.) ISO 8434-2:2007 also specifies a performance and qualification test for 37° flared connectors.

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ISO 8434-3:2005 specifies the general and dimensional requirements for the design and performance of O-ring face seal connectors made of steel for tube outside diameters or hose inside diameters of 6 mm through 38 mm, inclusive. These connectors are for use in fluid power and general applications where elastomeric seals can be used to prevent fluid leakage, including leakage caused by variations in assembly procedures. They are intended for the connection of tubes and hose fittings to ports in accordance with ISO 6149-1. Both metric and inch tubing can be accommodated by changing the sleeve. In the past, these connectors have been used predominantly with inch tubing. For new and future designs, the use of metric tubing is preferred. ISO 8434-3:2005 also specifies a performance and qualification test for O-ring face seal connectors.

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ISO 12151-2:2003 specifies the general and dimensional requirements for the design and performance of hose fittings with 24° cone connector ends with O-rings, in accordance with ISO 8434-1 and ISO 8434-4. These hose fittings are made of carbon steel and are intended for use with hoses with nominal inside diameters from 5 mm through 38 mm (inclusive). These hose fittings are for use in fluid power systems with hoses that meet the requirements of respective standards and in general applications with suitable hoses.

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This document specifies sizes and nominal working pressures for tubes with outside diameters in accordance with ISO 4397, and wall thicknesses and mechanical properties in accordance with ISO 3305 (seamless precision steel tubes} and ISO 3305 (welded precision steel tubes). The nominal working pressures included in this document reflect a design factor ratio of 4 to 1 applied to the calculated burst pressures.

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ISO/TS 17165-2:2013 provides guidelines for selection, routing, fabrication, installation, replacement, maintenance and storage of hose and hose assemblies for hydraulic fluid power systems which are manufactured from hoses conforming to ISO 1436, ISO 3862, ISO 3949, ISO 4079 and ISO 11237, and hose fittings conforming to ISO 12151-1 to ISO 12151-6. Many of these practices also can be suitable for use with other types of hoses and systems. ISO/TS 17165-2:2013 also lists examples of actual failure resulting from improper use of hydraulic hose and hose assemblies.

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ISO 19879:2010 specifies uniform methods for the testing and performance evaluation of metallic tube connections, stud ends for ports and flange connections for use in hydraulic fluid power applications. ISO 19879:2010 does not apply to the testing of hydraulic quick-action couplings, which is covered by ISO 7241-2. Tests outlined in ISO 19879:2010 are independent of each other and document the method to follow for each test. See the appropriate component International Standard for which tests to conduct and for performance criteria. For qualification of the connector, the minimum number of samples specified in ISO 19879:2010 is tested, unless otherwise specified in the relevant connector standard or as agreed upon by the manufacturer and the user.

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ISO 8434-1:2007 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 ISO 8434-1:2007. It also specifies a performance and qualification test for these connectors.

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ISO 17165-2:2006 provides guidelines for selection, routing, fabrication, installation, replacement, maintenance and storage of hose and hose assemblies for hydraulic fluid power systems that are manufactured from hoses conforming to ISO 1436-1, ISO 1436-2, ISO 3862-1, ISO 3862-2, ISO 3949, ISO 4079-1, ISO 4079-2, ISO 11237-1 and ISO 11237-2, and hose connectors conforming to ISO 12151-1 through ISO 12151-6.

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ISO 6149-4:2006 specifies dimensions and performance requirements for external hex and internal hex port plugs for use with ISO 6149-1 ports. Port plugs in accordance with this part of ISO 6149-4:2006 can be used at working pressures up to 63 MPa (630 bar). The permissible working pressure depends upon the plug end size, materials, design, working conditions, application, etc.

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ISO 9974-4:2006 specifies dimensions and performance requirements for metric external hex and internal hex port plugs for use with ISO 9974-1 ports. Port plugs in accordance with ISO 9974-4:2006 can be used at working pressures up to 63 MPa (630 bar). The permissible working pressure depends upon the plug end size, materials, design, working conditions, application, etc.

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ISO 19879:2005 specifies uniform methods for the testing and performance evaluation of metallic tube connections, stud ends for ports and flange connections for use in hydraulic fluid power applications. This International Standard does not apply to the testing of hydraulic quick-action couplings. Tests outlined in ISO 19879:2005 are independent of each other and document the method to follow for each test. See the appropriate component International Standard for which tests to conduct and for performance criteria. For qualification of the connector, the minimum number of samples specified in this International Standard are tested, unless otherwise specified in the relevant connector standard or as agreed upon by the manufacturer and the user.

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Specifies uniform methods for the testing and performance evaluation of threaded metallic tube connections for hydraulic fluid power lines.

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Cancels and replaces the first edition (1977). Specifies a selection of nominal pressures for hydraulic and pneumatic fluid power connectors and associated components.

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Lays down general and dimensional requirements for the design and performance of 24° cone connectors with O-ring weld-on nipples that are suitable for use with steel and stainless steel tubes with outside diameters from 6 mm to 42 mm, inclusive. These fittings are for use in fluid power and general applications where elastomeric seals can be used.

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Specifies general and dimensional requirements for the design and performance of O-ring face seal fittings of steel for tube outside diameters or hose inside diameters of 6 mm to 38 mm, inclusive. These fittings are for use in fluid power and general applications where elastomeric seals can be used to prevent fluid leakage. They are intended for the connection of tubes and hose fittings to ports in accordance with ISO 6149-1.

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Specifies sizes and nominal working pressures for tubes with outside diameters in accordance with ISO 4397 and wall thicknesses or mechanical properties in accordance with ISO 3304 (seamless precision steel tubes) and ISO 3305 (welded precision steel tubes). The nominal working pressures included herein reflect a design factor ratio of 4 to 1 between the static burst and nominal working pressures.

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Specifies general and dimensional requirements for the design and performance of 37° flared fittings which are suitable for use with ferrous and non-ferrous tubes with outside diameters from 6 mm to 50 mm, inclusive. These fittings are for use in fluid power and general applications within the limits of pressure and temperature specified for the connection of tubes and hose fittings to ports in accordance with ISO 6149-1, ISO 1179-1 and ISO 11926-1.

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Specifies general (pressure, temperature, designation, assembly, marking) and dimensional requirements for the design and performance of 24° compression fittings which are suitable for use with ferrous and non-ferrous tubes with outside diameters from 4 mm to 42 mm, inclusive. These fittings are for use in fluid power and general applications within the limits of pressure and temperature specified in this part. 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.

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Specifies two series of diameters: a series of nominal outside diameters for rigid or semi-rigid tubes, irrespective of material composition, and a series of nominal inside diameters for hoses made of rubber or plastic.

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