ANSI Z21.24-2005 pdf download American National Standard/ CSA Standard For Connectors For Gas Appliances
2.3.2 The connector shall withstand for 5 minutes, without leakage and without becoming detached, a steady lengthwise pull of 800 lb/in (1 40.2 N/mm) of nominal inside diameter. Method of Test One end of a 1 ft (305 mm) connector shall be securely attached to a fixed pipe to which an air supply system and pressure gage is connected. The other end shall be securely attached in a similar manner to a closed pipe connected to a mechanical means by which a constant pulling force of 800 lb/in (1 40.2 N/mm) of nominal inside diameter can be applied. The required tension shall be applied to the connector and maintained for 5 minutes. At the end of 5 minutes, there shall be no leakage.
2.4 Bending The connector shall withstand 30 bends without leakage or damage to the tubing or fittings. Method of Test One end of a 2 ft (61 0 mm) connector shall be securely attached to a fixed pipe to which an air supply system and manometer is connected.
The other end shall be closed gastight. Two 2 1 / 4 in (57.2 mm) diameter mandrels shall be placed, one at each side of the fixed end of the connector, in contact with the connector nut. The center of the mandrels shall be in line with the tubing end of the nut. Air shall then be admitted to the connector until a pressure equivalent to 3 psi (20.7 kPa) is obtained. The tubing shall be bent from the starting position “A” along the path shown by the dotted circle in Figure 3, Illustration of Bending Test, to the position indicated by “B.” It shall then be bent back to the starting position and bent in the opposite direction to position “C.” Each 1 80 degree (3.1 4 rad) bend and subsequent return to the starting position shall be counted as one cycle. This process shall be repeated until 30 cycles have been completed, the bending motion being applied uniformly at the rate of 5 cycles per minute. Following completion of the 30 bends, the connector shall not leak. This test shall be applied to each nominal diameter, type and material of connector submitted.
2.5 Torsion The connector shall withstand, without leakage or damage to the tubing or fittings, 1 5 applications of 90 degree (1 .57 rad) twists in alternate directions. Method of Test One end of a 2 ft (61 0 mm) connector shall be securely attached to a rigid frame and loaded in tension as specified in Table V, Applied Load During Torsion Test.
ANSI Z21.24-2005 pdf download
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