ASME A112.18.6-2009 pdf download

ASME A112.18.6-2009 pdf download.Flexible water connectors.
5.3 Burst pressure test
5.3.1 Performance
Flexible connectors shall not leak when subjected to the hydrostatic burst pressure test specified in
Clause 5.3.2.
5.3.2 Procedure
The burst pressure test shall be conducted as follows:
(a) Fill the specimen with water.
(b) Submerge the specimen in water at 82 ± 3 °C (180 ± 5°F) for 30 mm. Alternatively, if the medium is air, condition the specimen for 60 mm at ambient laboratory conditions while flowing water at 82 ± 3 °C (180 ± 5°F) through it.
(c) Pressurize the specimen at 1 724 ± 35 kPa (250 ± 5 psi).
(d) Hold the specimen at the temperature and pressure specified in Items (b) and (c) for 30 mm.
(e) Remove the specimen from the water, if applicable.
(f) Inspect the specimen for leaks while it is still being subjected to the test pressure.
5.4 Pressure drop test
5.4.1 Performance
The pressure drop across the specimen shall not exceed the applicable value specified in Table 1 when it is tested in accordance with Clause 5.4.3. This requirement shall not apply to flexible connectors that are an integral part of a faucet that complies with ASME Al 12.8.1 /CAN/CSA-B1 25.1.
5.4.2 Set-up
The test assembly shall be set up in accordance with Part 4 of ANSI/ISA-75.02. The test specimen shall
consist of a flexible water connector bent 1 80° around a mandrel of the applicable size specified in
Table 1.
5.4.3 Procedure
The pressure drop test shall be conducted as follows:
(a) Supply water at the applicable flow rate specified in Table 1 for at least 30 s.
(b) At the end of the 30 s, measure the pressure drop across the specimen.
5.5 Torque test
Flexible connectors shall not leak or otherwise fail when tested in accordance with Clause 5.3.4.2 of
ASME Al 12.18.1 /CAN/CSA-B1 25.1.
6 Markings
6.1
Except as specified in Clause 6.2, flexible connectors shall be permanently marked with the manufacturer’s recognized name, trademark, or other mark.
6.2
Flexible connectors that are not permanently marked with the manufacturer’s recognized name, trademark, or other mark shall be permanently marked with the recognized name, trademark, or other mark of the customer for whom the connector was manufactured.
B.1
The following conversion rules are used in this Standard:
(a) Zeros to the left of the first non-zero digit are not significant.
(b) If the number is greater than 1, all zeros to the right of the decimal point are significant.
(c) In multiplication and division, the original number with the smallest number of significant digits determines the number of significant digits in the product or quotient.
(d) If an exact constant is used (e.g., 3 ft = 1 yd), it does not affect the number of significant digits in the calculated value.
(e) If inexact constants are used (e.g., it = 3.141 6), the constant with at least one more significant digit than the smallest number of significant digits in the original data is used.
B.2
The following rounding rules are used in this Standard:
(a) The digits that follow the last significant digit are dropped if the first digit is less than 5.
(b) If the first digit dropped is greater than 5, the preceding digit is increased by 1.
(c) If the first digit dropped is 5 and there are non-zero digits following the 5, the preceding digit is increased by 1.
(d) If the first digit dropped is 5 and there are only zeros following the 5, the digit is rounded to the even number (e.g., for three significant digits, 1 .655000 becomes 1 .66, 1 .625000 becomes 1 .62).
(e) For maximums and minimums, rounding is performed within the range of the maximum and minimum values in a way that does not violate the original limits.