ASME A112.19.5:2011 pdf free download.Flush valves and spuds for water closets, urinals, and tanks.
5 Performance requirements and test methods
5.1 General
5.1.1 Preconditionlng
Before testing, specimens shall be conditioned at ambient laboratory conditions for a minimum of 12 h.
5.1.2 InstallatIon for testing
Specimens shall be installed in accordance with the manufacturer’s instructions.
5.1.3 Hush valve assembly
5.1.3.1 Threaded
Threaded fkish valves intended to be assembled to the fixture using a flush valve nut shall be tested in accordance with Clauses 5.3 and 5.4.
5.1.3.2 Non-threaded
Flush valves assembled to water closets by means other than threads shall be tested in accordance with
Clause 5.4.
5.2 life cycle test
5.2.1 Performpnce requirements
During and after the test, flush valves shall
(a) continue to function as they did at the beginning of the test;
(b) show no signs of leakage; and
(c) not develop any defects that might adversely affect their functionality or serviceabity.
5.2.2 Test method
The life cycle test shall be conducted as follows:
(a) Install the specimen with a minimum sustained water head of 150 mm (6.0 in) at 21 ± 5 C (70± 10F).
(b) Operate the specimen and allow it to return to its dosed position for 150 000 cydes, with water at ambient temperature and returned to a minimum of 150 mm (6.0 in) head after each cycle.
5.3 Thread torque test
5.3.1 Performance requirements
The flush valve and flush valve nut shall withstand a torque of 14 N.m (10 lbf-ft) without jumping the threads or showing any sign of visible damage.
5.3.2 Test method
The thread torque test shall be conducted as follows:
(a) Using the matching flush valve nut, assemble the flush valve to a smooth 13 mm (0.5 ii) thick aluminum plate wIth a hole bored through It. Ensure that the hole In the aluminum plate Is 1 to 5 mm (0.04 to 0.20 in) larger than the outside diameter of the flush valve thread.
(b) Titen the flush valve nut to a torque of 14 N.m (10 lbf-ft).
(c) Wait 1 mm and sassemble the flush valve and flush valve nut.
ASME A112.19.5:2011 pdf free download
