BS EN ISO 19879:2021 pdf download.Metallic tube connections for fluid power and general use一Test methods for hydraulic fluid power connections
1 Scope
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.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 48-2, Rubber, vulcanized or thermoplastic — Determination of hardness — Part 2: Hardness between 10 IRHD and 100 IRHD
ISO 3448, Industrial liquid lubricants — ISO viscosity classification
ISO 360 1-3, Fluid power systems — O-rings — Part 3: Quality acceptance criteria
ISO 5598, Fluid power systems and components — Vocabulary
ISO 65 08-1, Metallic materials — Rockwell hardness test — Part 1: Test method
ISO 6605, Hydraulic fluid power — Test methods for hoses and hose assemblies
ISO 6743-4, Lubricants, industrial oils and related products (class L) — Classification — Part 4: Family H (Hydraulic systems)
ISO 10763, Hydraulic fluid power — Plain-end, seamless and welded precision steel tubes — Dimensions and nominal working pressures
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5598 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 General requirements
WARNING一Some of the tests described in this document are considered hazardous. It is,therefore, essential that, in conducting these tests, all appropriate safety precautions be strictly adhered to. Attention is drawn to the danger of burst, fine jets (which can penetrate the skin) and energy release of expanding gases. To reduce the hazard of energy release, bleed air out of test specimens prior to pressure testing. Tests shall be set up and performed by properly trained personnel, utilizing appropriate personal protective equipment (PPE).BS EN ISO 19879 pdf download.