Specification
Table Of Contents
- Preface
- 1 Scope
- 2 Reference publications
- 3 Definitions and abbreviations
- 4 Design requirements
- 4.1 Supply fittings
- 4.2 Servicing
- 4.3 Installation
- 4.4 Threaded connections
- 4.5 Connections other than threaded connections
- 4.6 Accessible designs
- 4.7 Backflow prevention
- 4.8 Cover plates and escutcheons
- 4.9 Toxicity and lead content
- 4.10 Frost-proof faucets and hydrants
- 4.11 Showerheads, body sprays, and hand-held showers
- 4.12 Cross-flow
- 4.13 Fittings incorporating electrical features
- 4.14 Materials
- 4.15 Automatic compensating valve temperature control
- 4.16 Lawn faucets
- 4.17 Flexible water connectors
- 4.18 High-efficiency commercial pre-rinse spray valves
- 4.19 Household hot water dispensers with storage electrical heating systems
- 5 Performance requirements and test procedures
- 5.1 General
- 5.2 Coatings
- 5.3 Pressure and temperature
- 5.4 Flow rate
- 5.5 Operating requirements
- 5.6 Life cycle
- 5.7 Resistance to installation loading
- 5.8 Resistance to use loading
- 5.9 Backflow prevention
- 5.10 Lawn faucets
- 5.11 Alternative materials test
- 5.12 High-efficiency showerheads and hand-held showers
- 5.13 High-efficiency commercial pre-rinse spray valves
- 6 Markings, packaging, and installation instructions
- Annex A (informative) Unit conversion and rounding criteria
- Annex B (normative) Tests by fitting type
ASME A112.18.1-2018/CSA B125.1-18 Plumbing supply fittings
July 2018 © 2018 Canadian Standards Association
41
5.4 Flow rate
5.4.1 Supply fittings
Fittings and accessories shall meet the minimum and maximum flow rate requirements specified in
Table 1, at the temperatures and flowing pressures specified in Clause 5.4.2.3, with the exception of
high-efficiency commercial pre-rinse spray valves, which shall be tested in accordance with Clause 5.4.3.
These requirements shall be met before and after the life cycle tests specified in Clause 5.6.
5.4.2 Test procedure
5.4.2.1 Specimen
The specimen shall
a) be thoroughly flushed before the flow rate is measured;
b) be connected to a smooth-interior pipe or tubing with a length equal to at least 20 times the inside
diameter of the inlet(s) of the specimen;
c) have a pipe or tubing of the length specified in Item b) connected to the outlet of the specimen if
the specimen does not discharge to the atmosphere;
d) be connected to a pipe or tubing of the same nominal size as the specimen connections;
e) have its standard accessories installed, when tested for compliance with the maximum flow rates
and the minimum flow rates for high-efficiency devices specified in Table 1; and
f) have its standard accessories removed, when tested for compliance with the minimum flow rates
specified in Table 1.
If the accessories are supplied separately, they shall be tested as separate devices using commercially
available pipe or tubing.
The test set-up shall be as shown in Figure 3.
5.4.2.2 Flow rate
Other flow rate test conditions shall be as follows:
a) the upstream pressure tap(s) and downstream pressure tap (if required) shall be located as shown
in Figure 3;
b) pressure tap size and configuration shall comply with ASME PTC 19.2 or ANSI/ISA-75.02;
c) if a fluid meter is used to measure flow rate, the installation shall be as specified in ASME PTC 19.5;
and
d) if the time/volume method is used, the container shall be of sufficient size to hold the collected
water for at least 1 min.
5.4.2.3 Procedure
5.4.2.3.1
Fittings shall be tested at the maximum flow setting, if adjustable, with both hot and cold water valves
fully open on combination fittings.
The flow rate test shall be conducted with water between 5 and 71 °C (40 and 160 °F) in accordance
with the intended end use of the fitting and under the following conditions:
a) for
minimum flow: at 140 ± 7 kPa (20 ± 1 psi) at the inlet when water is flowing; and
b) for
maximum flow for faucets: at 410 ± 7 kPa (60 ± 1 psi) at the inlet when water is flowing; and