ISO 14743:2020

ISO 14743:2020 pdf free.Pneumatic fluid power——Push-in connectors for thermoplastic tubes.
8 Marking
Each push-in connector shall be permanently marked with the minimum following information:
a) manufacturer’s/supplier’s name or trademark;
b) the OD of the tube which it is to be used with the push-in connector.
9 Performance requirements and testing
9.1 General
9.1.1 This clause establishes minimum qualification requirements for tensile load, pressure capabilities, leakage, connection forces, disconnection forces and cyclic endurance (impulse) for pneumatic push-in connectors for use with thermoplastic tubes.
9.1.2 Unless otherwise specified, tests shall be conducted at room temperature (23 °C ± 5 °C) and relative humidity level of 65 % ± 5 %.
9.1.3 Unless otherwise specified, a tolerance of ±5 % applies to all test characteristics.
9.2 Test samples
9.2.1 Three test samples shall be subjected to the proof and burst pressure tests; six test samples shall be subjected to all other tests.
9.2.2 Prior to testing, the tube sample shall be a minimum of two weeks (336 h) old.
9.2.3 Test samples shall consist of a push-in connector connected to the test tubing defined in Annex A and Annex B. Except for 9ñ and 91, the tubes for the test samples shall be cut to provide a length that is 20 times the OD of the tube between the two ends of the connectors when connected. The tubes shall be connected in accordance with the connector manufacturer’s specification.
9.2.4 Prior to testing, each connector to be tested shall be connected and disconnected four times and then connected a fifth time so that testing can be conducted.
9.3 Tensile test
9.3.1 Procedure The test shall be conducted under unpressurised conditions. The test sample shall be placed in a tensile machine and fixture so that the samples and end fixtures are co-linear. One end of the test sample shall be stationary, and the opposite end shall be attached to the moving member of the test apparatus. A tensile load shall be applied at a rate of 1 mm/s along the axis of the test specimen.
9.3.2 Pass/fail criteria
The test sample shall withstand the minimum tensile load shown in Table 8 without separation from the connector.
9.4 Pressure at maximum temperature test (for PA tubing only)
9.4.1 Description
The test under 1,5 times maximum allowed working pressure (MAWP) at maximum temperature is conducted with PA tubing, as specified in Annex A, and is intended to evaluate the ability of the connector to be functional and disconnected after this test.
9.4.2 Apparatus
The test apparatus consists of a source of pressure and chamber temperature. Source of pressure
The apparatus that will be used for the pressure test at maximum temperature shall be source of pressure with gauges and piping, capable to apply to the sample 1,5 times MAWP within the ±5 % general requirement tolerance. The test fluid applied shall be water. Temperature chamber
The test apparatus consists of a temperature chamber capable to maintain the test sample during the specified time at the temperature required within the ±5 % tolerance accuracy.
9.4.3 Procedure
Plug one end of the test specimen and mount it in the apparatus with the plugged end unrestrained. Apply a pressure of 1,5 times MAWP to the test specimen and hold for I h at +80 °C.
9.4.4 Pass/fail criteria
The tube shall be disconnected from the connector. The connection under test shall not exhibit any visual deformation or visual evidence of leakage after being subjected to the test.
9.5 Proof and burst pressure test (for PA tubing only)
9.5.1 Description
The proof and burst pressure test is conducted with PA tubing, as specified in Annex A, and is intended to evaluate the ability of the connector to retain the tubing at a proof pressure of 1,5 times the rated pressure and at a minimum burst pressure of three times the rated pressure.
9.5.2 Apparatus
The test apparatus consists of a source of pressure and the necessary gauges and piping. The test fluid shall be water.ISO 14743 pdf download.

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