Water supply—Tap ware - Plumbing Products Industry Group

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Water supply—Tap ware
Part Title:
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Designation:
AS/NZS 3718:2005
Part Number:
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Supersedes Standard No:AS/NZS 3718:1997, AS/NZS 3718:2003, AS 1718—1992, AS 3496—1999,
AS/NZS 3718:2003
AustralianORJoint:
Australian/New Zealand
Creation Date:
2007-10-16
Revision Date:
2007-10-16
Issue Date:
October 2007
Committee Number:
WS-001
Committee Title:
Water Fittings
Subcommittee Number: Click here and type SubCommittee Number
Subcommittee Title:
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Project Manager:
Jessica Chai
PMs Email Address:
Jessica.Chai@standards.org.au
WP Operator:
Chai
Project Number:
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Combined Procedure?: Click here and type Yes or No
Committee Doc No.:
ONE Alpha followed by FOUR numerical (eg: N9999)
Stage:
Committee Draft
Committee Reps:
Australian Industry Group
Australian Stainless Steel Development Association
Building Officials Institute of New Zealand
Certification Interests (Australia)
Copper Development Centre – Australia
Master Plumbers Association of NSW
Master Plumbers, Gasfitters and Drainlayers New Zealand
New Zealand Engineering Federation
Plastics Industry Pipe Association of Australia
Plastics New Zealand
Plumbing Distributors Association of New Zealand
Plumbing Products Industry Group
Queensland Brassware Industry Advisory Panel
South Australian Water Corporation
Testing Interests (Australia)
Water Corporation Western Australia
Additional Interests:
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Product Type
ASAM
Document Status
Current
Document Availability Private
Amendment
Amendment No.:
Amdt Published Date:
Std Published Year:
2
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2005
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2
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AS/NZS 3718:2005/Amdt 2/
STANDARDS AUSTRALIA/STANDARDS NEW ZEALAND
Amendment No. 2
to
AS/NZS 3718:2005
Water supply—Tap ware
REVISED TEXT
The 2005 edition of AS/NZS 3718:2005 is amended as follows; the amendment(s) should be inserted in the
appropriate place(s).
SUMMARY: This Amendment applies to the <Click here and type Amendment Locations >
Published on .
Approved for publication in New Zealand on behalf of the Standards Council of New Zealand on Error! No
text of specified style in document.
AMDT
No. 2
Clause 1.1
Change current note to ‘Note 1’, and add the following 2nd note:
2. Where clauses and appendices refer to New Zealand, these shall apply only to products to
be sold in New Zealand.
AMDT
No. 2
Clause 1.3.13
Delete existing text and replace with the following:
The water consumption of a fully open water tap, which is measured in litres per minute,
using a dynamic water pressure of—
(i) 35 kPa in accordance with Appendix H,
(ii) 250 kPa, or
(iii) the average of 150, 250 and 350 kPa in accordance with Appendix G.
AMDT
No. 2
Clause 1.3.30
Delete the existing text and insert the following:
The nominal flow rate (WELS) or the actual discharge measured at
(i) 35 kPa, or
(ii) 250 kPa (dynamic).
AMDT
No. 2
Clause 1.3.31
Insert the following new clauses:
1.3.31 High pressure
Where both the hot water and cold water supply pressures are at 150 kPa or above.
1.3.32 Low pressure
Where both the hot water and cold water supply pressures are below 150 kPa
1.3.33 Unequal pressure
Where the hot water supply pressure is below 150 kPa and the cold supply pressure is at or
above 150 kPa
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AMDT
No. 2
3
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Clause 1.6.1
Delete the existing text and insert the following:
Taps and outlets that are required to conform with AS/NZS 6400 shall be labelled on the
packaging with their nominated supply pressure (e.g., low pressure, high pressure and/or
unequal pressure) and intended application (e.g., basin, kitchen sink, ablution trough,
laundry tub)
AMDT
No. 2
Clause 1.6.2
Delete the first paragraph and replace with the following:
Tap ware requiring assembly and fitting, as part of the installation process, shall be
accompanied by installation instructions in the English language, including a description of
installation requirements and operating temperature and pressure application or limitation.
AMDT
No. 2
AMDT
No. 2
Clause 2.3 Item (a)
Delete ‘or AS 2837’ from the first line.
Clause 4.4
Delete the existing Clause and replace with the following:
4.4 SURFACE-MOUNTING STRENGTH TEST FOR TAPS
When tested in accordance with Appendix E, the surface-mounting components of the tap
shall show no signs of cracking, deformation, or stripping of threads, and shall comply with
the requirements of the Appendix F.
NOTE: This clause does not apply to recessed wall mounted tap bodies
AMDT
No. 2
Clause 4.6.1
Delete the existing text and replace with the following:
4.6.1.1 High pressure
The flow rate of a tap or tap outlet shall be determined in accordance with Appendix G.
4.6.1.2 Unequal and low pressure
The flow rate of a tap or tap outlet shall be determined in accordance with Appendix R.
AMDT
No. 2
Clause 4.6.2
Delete the existing text and replace with the following:
4.6.1.1 High pressure
Where labelling compliance with AS/NZS 6400 is mandatory, the nominal flow rate shall
be determined in accordance with Appendix G, and the following:
(a)
The maximum difference between the highest and lowest average flow rate shall not
exceed 2.0 L/min.
(b)
The highest average flow rate shall not exceed the upper limit of the flow range for
the determined nominal flow rate in AS/NZS 6400 by more than 1.0 L/min.
(c)
The lowest average flow rate shall be not less than the lower limit of the flow range
for the determined nominal flow rate in AS/NZS 6400 by more than 1.0 L/min.
4.6.1.2 Unequal and low pressure
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Where labelling compliance with AS/NZS 6400 is mandatory, the nominal flow rate shall
be determined accordance with Appendix R, with one or both inlets measured at a dynamic
pressure of 35 kPa as per the manufacturer’s specifications.
AMDT
No. 2
AMDT
No. 2
Table A1
1
In the row for Clause 4.4, delete the words ‘Resistance to bending moment (surfacemounted taps)’ and replace with ‘Surface-mounting strength test for taps’.
2
In the row for Clause 4.6, add the words ‘or R’ after ‘Appendix G’.
Table A2
1
After the last row, add the following new row:
4.6
2
Nominal flow rate ††
Appendix G or R
Each batch or lot
Add the following new legend:
†† Tests for nominal flow rate compliance may be based on supplier certificates for a
WaterMark approved product.
AMDT
No. 2
Appendix B
Delete the following reference:
2837
AMDT
No. 2
Wrought alloy steels—Stainless steel bars and semi-finished products
Appendix E
Delete existing Appendix E and replace with the following:
APPENDIX E
SURFACE-MOUNTING STRENGTH TEST FOR TAPS
(Normative)
E1 SCOPE
Appendix sets out the method to assess the strength of a tap mounting components to resist
damage when subjected to a testing load.
E2 PRINCIPLE
The tap body or assembly is securely fixed in accordance with the manufacturer's
designated fitment instructions into the test jig. An adaptor is fitted to allow a tensile load
to be applied along the axis and at right angles to the mounting plane.
E3 APPARATUS
(a)
A rigid mounting plate 10 ±2 mm thick designed to accept the normal fixing method
for the tap under test. The bore in the mounting plate shall be the maximum opening
size as specified by the manufacturer in their installation instructions.
(b)
An adaptor to fit into or onto the tap body for the application of the axial test force.
(c)
A hot water supply capable of producing a constant supply of heated water according
to Paragraph E4 (b) for the duration of the test.
E4 PROCEDURE
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(a)
Securely fix the body of the tap under test onto the mounting plate in accordance with
the manufacturer’s designated fitment instructions. If the manufacturer does not
provide instructions for mounting or tightening of backnuts or screws, these shall be
tightened to 5-10 Nm for test purposes only.
(b)
For taps with plastic bodies or plastic mounting components, they shall be
conditioned by running water at 80 ±2°C through the tap or the maximum operating
temperature where the manufacturer specifies a maximum operating temperature
greater than 40 C. The temperature shall be stabilized to the test temperature of
80 ±2°C as recorded at the test body inlet and maintained for a minimum period of
60 s before stopping water flow.
(c)
Attach a suitable device to apply a static tensile load of 500 N axially to the tap body
for a minimum of 60 s.
NOTE: Non load-bearing components, such as handles, outlets, tap head or other components
may be removed to facilitate the application of the test load.
(d)
Remove the load and prior to removal of the tap under test inspect the mounting
assembly for security of movement.
(e)
Remove the components and check for distortion, cracking, breakage or any other
damage.
(f)
Then test for leakage in accordance with Appendix F.
E5 TEST REPORT
The following shall be reported:
(a)
Model, manufacturer, type and size of tap.
(b)
Tensile force applied.
(c)
Any distortion, cracking, breakage or other failure.
(d)
Results of retesting in accordance with appendix F
(e)
Reference to this test method, i.e., Appendix E, AS/NZS 3718.
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6
FIGURE E1 LOAD TEST SCHEMATIC
Drafting note: have requested the above to be drawn.
AMDT
No. 2
AMDT
No. 2
AMDT
No. 2
Appendix G
Add the words ‘FOR USE WITH HIGH PRESSURE’ at the end of the title.
Paragraph G1
Add the words ‘for use with high pressure’ at the end of the first sentence.
Paragraph G5
After Item (d), add the following new items:
(e)
Compliance with Clause 4.6.2.1 (b) for maximum average flow rate.
(f)
Compliance with Clause 4.6.2.1 (c) for minimum average flow rate.
(g)
Product nominated for use with high pressure as defined.
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(h)
AMDT
No. 2
AMDT
No. 2
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Reference to this test method i.e., AS/NZS 3718, Appendix G.
Table K1
1
Add the words ‘including alternate head assemblies’ at the end of the title of the 2nd
column.
2
Add the words ‘e.g., mixer taps’ at the end of the title of the 3rd column.
Appendix R
Insert the following new Appendix R:
APPENDIX R
DETERMINATION OF THE NOMINAL FLOW RATE OF TAPS AND TAP OUTLETS
FOR USE IN UNEQUAL PRESSURE
(Normative)
R1 GENERAL
This Appendix sets out the method for determining the flow rates through taps and tap
outlets for use in unequal pressure.
This test method shall be used as a basis for rating water efficiency of taps and tap outlets
in AS/NZS 6400.
Where a tap (tap and/or tap outlet, or mixer tap) is supplied with an aerator or outlet device,
the nominal flow rate shall be measured with the tap and tap outlet in the fully open
position providing maximum flow.
R2 PRINCIPLE
The test sample to be tested is supported in a test rig and water is passed through the test
sample at dynamic flow pressures of 35 kPa; when the flow rate has stabilized it is
recorded.
R3 APPARATUS
The following apparatus is required:
(a)
A water supply capable of delivering the required volumes at a temperature of
20 ±5°C and at a dynamic flow pressure of at least 150 kPa.
(b)
Test apparatus made from Type B copper tube of diameter equal to the inlet size of
the tap. The branch for flow pressure measurements shall be located at least 250 mm
downstream of any valve or fitting. The tap outlet, mixer tap, or flow controller
connection(s) shall be not more than 300 mm downstream of the flow pressure
measurements.
(c)
Pressure gauge having an accuracy of ±2% of the true value.
(d)
Flow meter having an accuracy of ±2% of the true value.
NOTE: See Figure G1 for a typical test arrangement.
R4 PROCEDURE
The procedure shall be as follows:
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(a)
Mount the test sample (tap and/or tap outlet, or mixer tap) in the test rig with the
inlet(s) connected to the water supply in accordance with the product manufacturer’s
intended method of installation.
(b)
The test sample operating mechanism or mechanisms or actuating valve(s) shall be
adjusted to achieve the maximum flow at the outlet.
(c)
Condition the test sample by allowing the water to flow through and then adjust the
control valve gradually until the dynamic flow pressure of 150 kPa is achieved for at
least 1 min.
(d)
Gradually adjust the control valve to turn off the flow of water.
(e)
Gradually adjust the control valve until the dynamic flow pressure of 35 kPa is
achieved, allowing the flow and pressure to stabilize.
(f)
Observe the flow meter and record the flow rate at that dynamic flow pressure.
(g)
Gradually adjust the control valve to turn off the flow of water.
(h)
Repeat Steps (e) to (g) to obtain a second reading of the flow rates
(i)
Calculate and record the average flow rate and record this value as the nominal
unequal pressure flow rate.
R4 TEST REPORT
The following shall be reported:
(a)
Manufacturer, brand name, model name and model number (if these are applicable) of
the test sample (tap and/or tap outlet, or mixer tap).
(b)
The nominal flow rate (in litres per minute) through the test sample,
NOTE: The average flow rates as determined at Step (i) of Paragraph R4.
(c)
Product nominated for use in unequal pressure installations as defined in AS 3718
(d)
Reference to this test method i.e., AS/NZS 3718, Appendix R
*** END OF DRAFT ***
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