ASME A112.18.2:2020 pdf free download – Plumbing waste fittings
5.8.1 Performance requirements
The minimum flow rate for a waste fitting with all of its component parts installed shall be 27 L/min(7.0o gpm) when a sustained water head of 150 mm (6.0 in) is applied above the inlet and the outlet isopen to the atmosphere.
For purposes of determining compliance with this flow rate, an observed or calculated value shall berounded “to the nearest unit”in the last right-hand digit used in expressing the specification limit inaccordance with the rounding method specified in ASTM E29.
5.8.2 Test procedure
The minimum flow rate test shall be conducted using water at 10± 6 *C(50±10 °F).Each inlet of amultiple-inlet fitting shall be tested separately.
Note: This test is not applicable to the overflow, condensate, and branch of the tailpiece connection components ofwaste fitting assemblies.
5.8.3 Grey water diverters5.8.3.1 General
Grey water diverters shall comply with Clause 5.8.3.2.The outlets of grey water diverters shall meet theminimum flow rate requirements specified in Clause 5.8.1.See Figures 10 and 11.
5.8.3.2 Performance requirements
When tested in accordance with Clause 5.8.3.3, grey water diverters shall have a minimum excess flowof 27 L/min (7.0 gpm) out of the sanitary outlet when a sustained water head of 150 mm (6.0 in) isapplied above the inlet. See Figure 12.
5.8.3.3 Test procedure
The test shall be conducted as follows:
a)Conduct the test as specified in Clause 5.8.2 with the diversion outlet of the specimen blocked andthe diversion mechanism directing the flow to the blocked outlet.
b)Measure the flow rate out of the sanitary drainage outlet.
5.9 strength
5.9.1 Thread torque strength
5.9.1.1 Performance requirements
Field-assembled threaded connections of union joints, slip joints, and gasketed joints shall not showevidence of stripping, cracking, or thread damage when tested in accordance with Clause 5.9.1.2 andshall not leak when tested in accordance with Clause 5.11.
5.9.1.2 Procedure
The test shall be conducted as follows:
a)Subject the joint(s) to a torque of 20 N-m (15 ft·lbf).
b)Disassemble the joint(s).
c)Examine the joint(s) for evidence of stripping, cracking, or thread damage. lf no such evidence isfound, proceed with ltem d).
d)Reassemble and retighten the joint(s) with a torque of 20 N-m (15 ft·lbf).e)Test the joint(s) in accordance with Clause 5.11 and check for leaks.5.9.2 Hydrostatic pressure
5.9.2.1 Performance requirements
The drainage envelope parts of waste fittings shall show no signs of leakage, cracking, or permanentdeformation when tested in accordance with Clause 5.9.2.2.
5.9.2.2 Procedure
The hydrostatic pressure test shall be conducted using water at 10±6 °℃(50±10 °F). Waste fittingsshall be assembled in accordance with the manufacturer’s instructions and subjected to a hydrostaticpressure of 34 kPa (5.0 psi) for at least 1 min.
5.10 Life cycle
5.10.1 Performance requirements
During and after the test described in Clause 5.10.2, waste fittings shall continue to function as they didat the beginning of the test and shall not develop defects that might adversely affect their serviceability.ln addition, they shall comply with Clause 5.11.
5.10.2 Test procedure
Waste fittings incorporating moving or potentially wearing parts shall be tested for 10 000 cycles. Thespeed of the life cycle test apparatus shall be adjusted to a minimum of 600 cycles per hour. The fittingshall be cycled without water.
Note: lf the design of a device is such that 600 cycles per hour cannot be attained, a more suitable cycle ratespecified by the manufacturer may be used.