BS EN ISO 19879:2021 pdf download

BS EN ISO 19879:2021 pdf download.Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connections.
In hydraulic fluid power systems, power is transmitted and controlled through a liquid under pressure within an enclosed circuit. It is suggested that components be designed to meet these requirements under varying conditions. Testing of components to meet performance requirements provides a basis of assurance for determining design application and for checking component conformance with the stated requirements.
BS EN ISO 19879 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.
BS EN ISO 19879 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 BS EN ISO 19879is 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.
WARNING — Some of the tests described in BS EN ISO 19879 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).
4.1 Test assemblies
All components tested shall be in the final form, including annealed nuts, as required for brazed components. Unless otherwise specified in the respective connector standard, Type 1 test assemblies shall be as shown in Figure 1 for tube connections, and Type 2 test assemblies shall be as shown in Figure 2 for male stud ends. Alternatively, in order to test the connector to its full capability, use of the metallic tube may be omitted for burst and cyclic endurance tests, and different configurations with similar capability may be combined in a test assembly Type 3, as shown in Figure3. Type 4 test assemblies for flange connectors shall be as shown in Figure 4. Test assemblies shall conform to the.BS-EN-ISO-19879-2021

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