ASME A112.1037 pdf download.Performance requirements for pressurized flushing devices for plumbing fixtures.
ASME A112.1037 covers pressurized flushing devices (PFD5) intended to flush water closets, urinals, and other plumbing fixtures and specifies requirements for materials, design, methods of operation, test methods, and markings.
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 sections do not include requirements or alternative requirements; the purpose of a note accompanying a section 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 (non-mandatory) to define their application.
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 noncon1ormance with this Standard. MI references to gallons are to U.S. gallons.
Section II
2 Reference publications and definitions
2.1 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.
4.6.2 Procedure
The operating (torque) test shall be conducted in an ambient environment of 20 ± 5 ‘C (68 ± 9SF), as
follows:
(a) Install the test specimen on a test stand with the PFD discharging to atmosphere.
(b) Bring the test specimen to equilibrium test temperatures by running water through ii
(c) Determine the torque or force to operate a manually activated operating control by testing with water running as follows:
(I) 140 ±14 kPa and 15 ± 6 ‘C (20±2 psi and 59± 10°F); and (Ii) 550 ±14 kPa and 15 ± 6 C(80 ± 2 psi and 59± 10°F).
4.6.3 Performance criteria
4.6.3.1
For primary controls of non-accessible design PFDs, the linear force shall not exceed 90 N (20 lbf).
4.6.3.2
For primary controls of accessible design PFDs, the linear force shall not exceed 22 N (S lbf).
4.7 Life cycle test
4.7.1 Purpose
The purpose of this test is to determine If there Is any deterioration in the performance of the PFD through the life cycle testing.
4.7.2 Procedure
4.7.2.1 Test set-Lip
The PFD for the life cycle test shall be set up as follows:
(a) Install the test specimen on a test stand with the PFD discharging to atmosphere.
(b) Connect the PFD to a 172 ± 14 kPa (25 ± 2 psi) flowing supply pressure at 15 ± 6 ‘C (59 ± 1 0F).
(C) Flush the PFD at least five times to hydraulically balance it.
(d) Once hydraulically balanced, flush the PFD five consecutive times.
(e) Measure the volume of each flush.
(f) Average the five (lush volumes and record the average flush volume of the PrO. For dual flush PFDs, measure and average the flush volumes for five full flushes then measure and average the flush volumes for five reduced flushes,
4.7.2.2 Procedure for PFDs with a primary control only
The life cycle test for PFDs with a primary control only shall be conducted as follows:
(a) Subject the PFD 250,000 cycles of operation.
(b) After eveiy 25,000 cycles,
(i) record the average (lush volume 04 three consecutive flushes; and (ii) observe the PFD for leakage.
(C) For dual flush PFDs, use the following cycling sequence:
(I) 25,000 cycles in full-flush mode;
(ii) 100,000 cycles in reduced-flush mode;
(iii) 25,000 cycles in full-flush mode; and
(iv) 100,000 cycles in reduced-flush mode.
(d) Compare the average flush volumes at each stage with the average discharge volumes recorded in accordance with Clause 4-7.2.1.
ASME A112.1037 pdf download
