ASME A112.1002:2020 pdf download

ASME A112.1002:2020 pdf download Anti-siphon fill valves for water closet tanks
3.8 Servicing
The device shall be designed so that replacement of wearing parts can be accomplished
a) without removing the fitting from the supply system;
b) without removing the piping from the body;
c) without disturbing the finished wall; and
d) using standard tools or manufacturer-provided tools.
3.9 Pressure-relief devices
For pressure-relieving devices, pressure relief shall occur at a pressure of at least 1030 kPa (150 psi),and the relief discharge shall be into the fixture.
Section IV
4 Performance requirements and test methods
4.1 General
Tests shall be conducted in the order in which they are listed in this Standard on one test specimen.
4.2 Preconditioning and test conditions
4.2.1 Preconditioning
Before testing, the device shall be conditioned at ambient laboratory conditions for not less than 12 h.
4.2.2 Test conditions
Unless otherwise specified in this Standard, tests shall be conducted at ambient laboratory conditions.
4.3 Test specimen installation
For test purposes, specimens shall be installed in accordance with the manufacturer’s instructions.
4.4 Pressure and temperature tests
4.4.1 Pressure and temperature cycling test
4.4.1.1 Purpose
The purpose of the elevated pressure and temperature cycling test is to
a) evaluate the performance of the device at elevated temperatures and pressures; and
b) ensure that the device has a means for securing the refill tube to the overflow tube and that it remains in place during the test.
4.4.1.2 Procedure
The elevated pressure and temperature cycling test shall be conducted as follows:
a) Install the specimen in a tank in accordance with the manufacturer’s instructions.
b) The water in the tank may be displaced to accelerate the test, provided the flush volume range given by Clause 4.4.1.2 c) is maintained.
c) Using water at a temperature of 49 ± 3 °C (120 ± 5 °F) and a static pressure of 860 ± 14 kPa (125 ± 2 psi), flush the water closet tank every 5 min ± 15 s for a total of 50 cycles using a flush volume between 3.8 and 7.6 L (1.0 and 2.0 gal).
d) Increase the static pressure to 1035 ± 14 kPa (150 ± 2 psi) and maintain it for 5 min ± 15 s.
e) Check the specimen for leakage, distortion, or other damage that could affect its performance.
4.4.1.3 Performance criteria
There shall be no leakage, distortion, or other damage that affects the performance of the device. The refill tube shall remain in place throughout the test.
4.4.2 Static and dynamic seals, working pressure test
4.4.2.1 Purpose
The purpose of this test is to determine the static and dynamic seal performance of the device at pressures between 140 and 860 kPa (20 and 125 psi).
4.4.2.2 Procedure with the valve closed
With the valve in the closed position, test the specimen according to Clause 4.4.2.4 for 5 min ± 15 s for each condition.
4.4.2.3 Procedure with the outlet(s) blocked
With the valve in the fully open position, block the outlet(s) and test the specimen according to Clause 4.4.2.4 for 5 min ± 15 s for each condition.
Where the outlet is difficult to block, the pressures listed in Clause 4.4.2.4.2 a) and 4.4.2.4.2 b) shall be flowing pressures rather than static pressures.
4.4.2.4 Test temperatures and pressures
4.4.2.4.1
The test for static and dynamic seals shall be conducted in an ambient environment. The specimen shall be brought to equilibrium test temperature by running water through it.
4.4.2.4.2
Test temperatures and pressures shall be as follows:
a) 140 ± 14 kPa and 10 ± 6 °C (20 ± 2 psi and 50 ± 10 °F); and
b) 860 ± 14 kPa and 10 ± 6 °C (125 ± 2 psi and 50 ± 10 °F).
4.4.2.5 Performance criteria
There shall be no leakage.
4.5 Life cycle test
4.5.1 Purpose
The purpose of this test is to demonstrate the long-term operational performance of the device.
4.5.2 Test conditions
The test shall be conducted with water at a
a) temperature of 21 ± 5 °C (70 ± 10 °F);
b) supply pressure of 620 kPa (90 psi) minimum; and
c) flowing pressure of 480 kPa (70 psi) minimum.
4.5.3 Procedure
The life cycle test shall be conducted as follows:
a) Install the fill valve in a tank in accordance with the manufacturer’s instructions.
b) The water in the tank may be displaced to accelerate the test.
c) Operate the fill valve for 150,000 cycles by filling the tank for each cycle. Cycle duration shall not exceed 1 min.
d) Increase the static pressure to 860 ± 14 kPa (125 ± 2 psi) for 5 min ± 15 s.
e) Check the fill valve for leakage, distortion, or other damage that could affect its performance.