ASME A112.19.5:2011 pdf download.Flush valves and spuds for water closets, urinals, and tanks.
(d) Inspect for leaks between the flush valve and the container.
5.5 Leak rate and chemical resistance tests
5.5.1 General
The flush valve seal shall be tested with a flush valve. The tests shall be conducted in the following order
(a) leak rate test (see Cause 5.5.3.2) and
(b) chemical resistance test (see Clause 55.3.3).
5.5.2 Performance requirement
Leakage through the flush valve seal during the initial leak rate test period and alter the chemical resistance test shall not exceed 0.25 mI/h.
5.5.3 Test methods
5.5.3.1 Apparatus
The test apparatus for the leak rate and chemical resistance tests shall consist of an NPS-8 dear PVC pipe attached to a piece of 6.4 mm (0.25 in) P flat stock. The joint between the pipe and the fiat stock shall be completely sealed. The flat stock shall have a hole bored through it that Is 1 to 5 mm (0.04 to 0.20 In) larger than the outside diameter of the flush valve thread or attachment mechanism. The flush valve shall be assembled into the hole in the flat stock. The dear PVC pipe shall be marked with a fill line 178± 1.5 mm (7±0.06 in) above the lowest point of the flush valve seat. Leakage from the flush valve seal shall be collected and measured.
Note: An akematfre test apparatus may be used if the condltons of this Clause are met.
5.5.3.2 Leak rate test procedure
The leak rate test shall be conducted as follows:
(a) Fill the test apparatus with water at 21 ± 5 °C (70 ± 10°F) to the specified fill line.
(b) Lift the fhish valve seal and flush the test apparatus.
Note This p’ocedure will allow the flush b’alve seal to be wetted and seal pe’cerfr
(c) Repeat Items (a) and (b) two more times, for a total of three fill-flush cycles.
(d) Fill the test apparatus to the fill line. Allow the flush valve seal to seat properly by leaving the test setup undisturbed for 24 ± 1 h.
(e) At the end of the 24 ± 1 h period specified ki Item (d), drain any water from the beaker, refill the apparatus with water to the fill line, and start the test. Conduct the test for 1 h ± 2 mm.
(f) At the conclusion of the test, remove the test apparatus from the graduated beaker.
(g) Inspect the beaker for any water that might have leaked past the flush valve seal.
(h) Measure the water collected in the beaker and calculate the leak rate.
5.5 Leak rate and chemical resistance tests
5.5.1 General
The flush valve seal shall be tested with a flush valve. The tests shall be conducted in the following order
(a) leak rate test (see Cause 5.5.3.2) and
(b) chemical resistance test (see Clause 55.3.3).
5.5.2 Performance requirement
Leakage through the flush valve seal during the initial leak rate test period and alter the chemical resistance test shall not exceed 0.25 mI/h.
5.5.3 Test methods
5.5.3.1 Apparatus
The test apparatus for the leak rate and chemical resistance tests shall consist of an NPS-8 dear PVC pipe attached to a piece of 6.4 mm (0.25 in) P flat stock. The joint between the pipe and the fiat stock shall be completely sealed. The flat stock shall have a hole bored through it that Is 1 to 5 mm (0.04 to 0.20 In) larger than the outside diameter of the flush valve thread or attachment mechanism. The flush valve shall be assembled into the hole in the flat stock. The dear PVC pipe shall be marked with a fill line 178± 1.5 mm (7±0.06 in) above the lowest point of the flush valve seat. Leakage from the flush valve seal shall be collected and measured.
Note: An akematfre test apparatus may be used if the condltons of this Clause are met.
5.5.3.2 Leak rate test procedure
The leak rate test shall be conducted as follows:
(a) Fill the test apparatus with water at 21 ± 5 °C (70 ± 10°F) to the specified fill line.
(b) Lift the fhish valve seal and flush the test apparatus.
Note This p’ocedure will allow the flush b’alve seal to be wetted and seal pe’cerfr
(c) Repeat Items (a) and (b) two more times, for a total of three fill-flush cycles.
(d) Fill the test apparatus to the fill line. Allow the flush valve seal to seat properly by leaving the test setup undisturbed for 24 ± 1 h.
(e) At the end of the 24 ± 1 h period specified ki Item (d), drain any water from the beaker, refill the apparatus with water to the fill line, and start the test. Conduct the test for 1 h ± 2 mm.
(f) At the conclusion of the test, remove the test apparatus from the graduated beaker.
(g) Inspect the beaker for any water that might have leaked past the flush valve seal.
(h) Measure the water collected in the beaker and calculate the leak rate.
