ASME A112.1037-2015 pdf download

ASME A112.1037-2015 pdf download.Performance requirements for
pressurized flushing devices for plumbing fixtures.
4.2.2 Procedure
The pressure test shall be conducted as follows:
(a) Install the test specimen on a test stand with the PFD discharging to atmosphere.
(b) Operate the PFD (i.e., allow it to complete its flushing cycle) at a static pressure of 140 ± 14 kPa (20 ± 2 psi).
(c) Repeat Item (b) at a static pressure of 860 ± 14 kPa (125 ± 2 psi).
(d) Subject the PFD to a static pressure of 140 ± 14 kPa (20 ± 2 psi).
(e) Hold for 5 mm.
(f) Repeat Item (b) at a static pressure of 860 ± 14 kPa (125 ± 2 psi).
(g) Observe for leakage.
4.2.3 Performance criteria
Failure to complete the flushing cycle or any leakage shall result in a rejection of the PFD.
4.3 Back siphonage test — Non-tank type PFDs
4.3.1 Purpose
The purpose of this test is to ensure that the PFD incorporates a means to protect against back siphonage except as specified in Clause 3.3.
4.3.2 Procedure
Non-tank type PFDs shall comply with the back siphonage performance requirements in ASME Al 12.18.3, ASSE 1001, orCSA B64.l.1.
4.3.3 Performance criteria
Failure to comply with the applicable back siphonage requirements of the applicable standards specified in
Clause 4.3.2 shall result in a rejection of the PFD.
4.4 Backflow test — Tank type PFDs
4.4.1 Purpose
The purpose of this test is to ensure that the PFD incorporates a means to protect against back siphonage and backpressure.
4.4.2 Procedure
The backflow test for tank type PFDs shall be conducted as follows:
(a) Install the test specimen in accordance with Figure 1.
(b) Foul all checking members with a 0.8 mm (0.032 in) diameter 100% copper wire formed to the
sealing surface of the check being tested and in the proper location for the type of valve construction, as illustrated in Figure 2, 3, or 4.
(c) Add a dye solution to the tank.
(d) Pressurize the tank to the manufacturer’s recommended working pressure to establish the normal water level in the PFD tank.
(e) Apply a vacuum of 85 kPa (12 psi) and maintained for at least 1 mm.
(f) Slowly apply a vacuum (not less than 5 s) from 0 kPa to 85 kPa (0 psi to 12 psi)
(g) Slowly reduce the vacuum from 85 kPa to 0 kPa (12 psi to 0 psi).
(h) Create a surge effect by quickly (less than 1 s) opening and closing a quick-acting valve. During this step, the vacuum shall range between 85 kPa and 0 kPa (12 psi and 0 psi).
Note: 85 kPa (12 psi) is equivalent to 638 mm (25 in) of mercury.
4.6.2 Procedure
The operating (torque) test shall be conducted in an ambient environment of 20 ± 5 °C (68 ± 9°F), 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 it.
(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 Ibf).
4.6.3.2
For primary controls of accessible design PFDs, the linear force shall not exceed 22 N (5 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-up
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 1 72 ± 14 kPa (25 ± 2 psi) flowing supply pressure at 15 ± 6 °C (59 ± 10°F).
(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.
(1) Average the five flush volumes and record the average flush volume of the PFD. 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 every 25,000 cycles,
(i) record the average flush volume of 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 (1).