ASME A112.18.6-2009 pdf download – Flexible water connectors.
4.1.3
Copper alloy components shall contain at least 56% copper.
4.1.4
Stainless steel components in contact with water shall be made from 300 or 400 series stainless steel.
Ferrous steel parts not in contact with water shall be protected by a coating that complies with Clause 4.2.
4.2 Coatings
Coatings shall be tested in accordance with and meet the requirements of Clause 5.2 of
ASME Al 12.18.1 /CAN/CSA-B1 25.1.
4.3 Connections
4.3.1 General
Connections shall comply with the performance requirements of this Standard (see Clause 5) and, as applicable, Clauses 4.3.2 to 4.3.7.
4.3.2 Pipe threads
NPT or NPTF tapered pipe threads shall comply with the Li gauge requirements of ASME Bi .20.1 or
ASME Bi .20.3 using a tolerance of ± 1 turn. Other pipe threads shall comply with ASME Bi .20.1.
4.3.3 Hose end threads
Hose end threads shall
(a) be compatible with hose end threads that comply with ASME B1 .20.7; and
(b) comply with the requirements of this Standard.
4.3.4 Fill valve threads
Fill valve threads shall comply with ASME Al 12.19.5, except that fill valve nut threads may be Class 2B.
4.3.5 Solder connections
The length and diameter of the joint section of a solder joint end for connection to copper tube or copper tube fittings shall be as specified in ASME Bl 6.18 or ASME Bl 6.22. Flexible connectors for soldering to the water distribution system shall not contain soldered assemblies.
4.3.6 Flare connections
Flare connections shall
(a) be compatible with flare connections that comply with ASME B1 6.26; and
(b) comply with the requirements of this Standard.
4.3.7 Compression connections
Compression connections shall
(a) be compatible with compression connections that comply with SAE J5i 2; and
(b) comply with the requirements of this Standard.
4.3.8 Push-fit fittings
Connections achieved by push-fit fittings shall comply with ASSE 1 061 and the applicable requirements of this Standard.
4.3.9 Alternate connections
Alternate connections shall meet the performance requirements of this Standard.
4.4 Water heater flexible connectors
Metallic water heater flexible connectors shall be made of
(a) 300 series stainless steel with a minimum wall thickness of 0.25 mm (0.01 0 in); or
(b) copper with a minimum wall thickness of 0.7 mm (0.026 in).
4.5 Working pressure
Flexible connectors shall function at
(a) supply pressures between 140 and 860 kPa (20 and 125 psi); and
(b) intermittent impulse pressures not exceeding 1 240 kPa (1 80 psi).
4.6 Working temperature
Flexible connectors shall
(a) function at supply temperatures between 4 and 71 °C (40 and 1 60°F); and
(b) withstand water at 82 °C (1 80°F) for 0.5 h without failure of the pressure envelope.
S Performance requirements and test methods
5.1 General
5.1.1
A specimen representing each combination of nominal diameter, connection type, and material shall be tested.
5.1.2
Separate specimens shall be used for each test specified in this Standard.
5.2 Intermittent impulse pressure test
5.2.1 Performance
Flexible connectors shall withstand intermittent impulse pressures not exceeding 1280 kPa (1 85 psi) when tested in accordance with Clause 5.2.2. In addition, on completion of such testing, the flexible connectors shall not leak when tested in accordance with the blocked outlet procedure specified in Clause 5.3.1 .3 of
ASME Al 12.18.1 /CAN/CSA-B1 25.1.
5.2.2 Procedure
The intermittent impulse pressure test shall be conducted as follows:
(a) Supply water at 82 ± 3 °C (180 ± 5°F) to the specimen in such a manner that the flowing pressure upstream of the specimen is a maximum of 51 7 kPa (75 psi) and the flow rate is 7.6 ± 19 L/min (2.0 ± 0.5 gpm).
(b) For each cycle, stop the flow and increase the pressure from 51 7 kPa (75 psi) to 1240 ± 35 kPa (180± 5 psi).