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ASME A112.19.5-2017 pdf download

ASME A112.19.5-2017 pdf download.Flush valves and spuds for water closets, urinals, and tanks.
1 Scope 1.1 This Standard covers spuds and flush valves for water closet bowls, tanks, and urinals. 1.2 In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (nonmandatory) to define their application. 1.3 SI units are the units of record in Canada. In this Standard, the inch/pound units are shown in parentheses. The values stated in each measurement system are equivalent in application; however, each system is to be used independently. Combining values from the two measurement systems can result in non- conformance with this Standard. All references to gallons are to U.S. gallons. For information on the conversion criteria used in this Standard, see Annex A. 2 Reference publications This Standard refers to the following publications, and where such reference is made, it shall be to the edition listed below, including all amendments published thereto. ASME (The American Society of Mechanical Engineers)/CSA Group ASME A112.19.2-2013/CSA B45.1-13 Ceramic plumbing fixtures
4.3 Overflow tubes The inside diameter of the overflow tube for flush valves intended to be sold as replacement parts shall be a minimum of 23.4 mm (0.92 in). 4.4 Spud dimensions Threaded spuds shall comply with the dimensions specified in Tables 1 and 2. Note: Alternate dimensions may be used provided that compatibility is maintained with mating components. 5 Performance requirements and test methods 5.1 General 5.1.1 Preconditioning 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 Flush valve assembly 5.1.3.1 Threaded Threaded flush 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 Performance 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 serviceability. 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 ± 10 °F). b) Operate the specimen and allow it to return to its closed position for 150 000 cycles, 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 in) 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) Tighten the flush valve nut to a torque of 14 N•m (10 lbf-ft). c) Wait 1 min and disassemble the flush valve and flush valve nut. d) Examine for signs of damage or jumped threads. 5.4 Fixture and flush valve joint leak test 5.4.1 Performance requirement The joint between the fixture and the flush valve (i.e., the flush valve mounting seal) shall not leak. Leakage through the flush valve seal opening shall not be considered a failure. 5.4.2 Test method The fixture and flush valve joint leak test shall be conducted as follows: a) Assemble the flush valve into a hole in the bottom of a container that is at least 500 mm (20 in) deep from the bottom to the lowest spill point. The hole in the bottom of the container shall be 1 to 5 mm (0.04 to 0.20 in) larger than the outside diameter of the flush valve thread or in accordance with the manufacturer’s instructions in the case of non-threaded connections. b) Fill the container with water at 21 ± 5 °C (70 ± 10 °F) to a height of 500 mm (20 in) measured from the container bottom. c) Wait 10 min. d) Inspect for leaks between the flush valve and the container.

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