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
52
b) a vacuum system that can maintain a 0 to 85 kPa (0 to 12 psi) vacuum; and
c) the atmosphere.
The coloured-water reservoir shown in Figure 5 shall be located below the mounting surface level of the
specimen. The coloured water in the reservoir shall be at the mounting surface level.
The terminal end of the sight tube shall be immersed 13 mm (0.5 in) below the mounting surface level
of the coloured water in the reservoir. The sight tube shall be transparent and have an inside diameter
of 13 ± 1.5 mm (1/2 ± 1/16 in).
5.9.3.2.2.4 Test procedure
The test to determine the presence of hidden check valves in single-outlet fittings with a submersible
outlet shall be conducted as follows (see Figure 5):
a) Mount
the specimen in accordance with Clause 5.9.3.2.2.3.
b) Open
Valve 3.
c) Apply
and hold a vacuum of 85 kPa (12 psi) for 5 min.
d) Close
Valve 3, gradually open Valve 2, and allow the pressure on the supply side of the
specimen
device
to gradually return to atmospheric.
e) Close
Valve 2 and gradually open Valve 3.
f) Gradually
raise the vacuum test load from 0 to 85 kPa (0 to 12 psi) and then gradually reduce it
to
0
kPa (0 psi).
g) Create
a surge effect by quickly opening and closing Valves 2 and 3 at least five times. During
the
tes
t, the applied vacuum load shall start at 0 kPa (0 psi), be increased to 85 kPa (12 psi), and
then
be
decreased to 0 kPa (0 psi).
Note: 85 kPa (12 psi) is equivalent to 638 mm (25 in) of mercury.
5.9.3.2.3 Check valve leakage
5.9.3.2.3.1 General
Fittings incorporating check valves shall be tested in accordance with Clauses 5.9.3.2.3.3 and 5.9.3.2.3.4
to determine their resistance to leakage.
5.9.3.2.3.2 Performance requirements
There shall be no drop in the pressure applied to the outlet within the 5 min period of the test specified
in Clause 5.9.3.2.3.6.
5.9.3.2.3.3 Upstream check valves
The check valve leakage test for single-outlet fittings with a submersible outlet shall be conducted as
follows:
a) Block
open or remove all check valves except the upstream check valve.
b) Insta
ll the specimen in accordance with Clause 5.9.3.2.3.5.
c) Conduct
the test in accordance with Clause 5.9.3.2.3.6.
5.9.3.2.3.4 Downstream check valves
The check valve leakage test for single-outlet fittings with a submersible outlet shall be conducted as
follows:
a) Block
open or remove all check valves except the downstream check valve.
b) Insta
ll the specimen in accordance with Clause 5.9.3.2.3.5.