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AS 3718:2021


Water supply - Tap ware

This Standard specifies requirements for metallic taps, plastic taps, mixing taps, sensor taps, lever taps, timed flow taps, mixing taps mechanical (non-thermostatic), and tapsets in nominal sizes ranging from DN 6 to DN 50 that are designed to be used generally for continuous operating temperatures not exceeding 80 °C and maximum dynamic operating pressure 500 kPa
Published: 17/09/2021
Pages: 93
Table of contents
Cited references
Content history
Table of contents
About this publication
1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
1.4 Size designation
1.5 Marking requirements
1.5.1 Taps
1.5.2 Components Components for the retrofit market Components for the OEM market
1.6 Packaging and installation instructions
1.6.1 Intended application
1.6.2 Installation instructions
2 Materials
2.1 Scope of Section
2.2 Metallic materials
2.2.1 Use of metallic material
2.2.2 Corrosion-resistant metallic materials
2.2.3 Copper
2.2.4 Copper alloy
2.2.5 Dezincification-resistant (DR) copper alloy
2.2.6 Stainless steel
2.3 Plastic and elastomeric materials
2.3.1 General
2.3.2 Acetal
2.3.3 UV resistance
2.3.4 Resistance to chemical degradation
2.4 Other materials
3 Design and manufacture
3.1 Scope of section
3.2 End connectors
3.2.1 Copper and copper alloy end connectors
3.2.2 Other end connectors
3.3 Screw threads
3.3.1 General
3.3.2 Thread engagement
3.4 Water shut-off devices
3.4.1 General
3.4.2 Single and combination taps jumper valve Spindles Jumper valve Design Construction
3.4.3 Other water shut-off valves
3.5 Thickness of metal parts
3.5.1 General
3.5.2 Copper, copper alloy and stainless steel tubes
3.5.3 Other sections
3.6 Fabricated assemblies
3.7 Outlets
3.7.1 Unit construction outlets
3.7.2 Other outlets
3.7.3 Flexible hoses Backflow prevention Flexible hoses with shut-off devices
3.7.4 Hose tap outlets
3.7.5 Showerheads for personal bathing
3.8 Operating mechanisms
3.9 Finish and workmanship
3.10 Accessories or components supplied with tap products
3.10.1 General
3.10.2 Flexible hose connectors
3.10.3 Integral backflow devices
3.10.4 Flow control devices
3.11 Taps and tap components to suit industry-specific dimensional characteristics
3.11.1 General
3.11.2 Valve seating, valve chamber and tap head connection
3.11.3 Tap head
3.11.4 Spindle end
3.11.5 Loose jumper valves
3.11.6 Tapset breaching piece assemblies
3.11.7 Replacement tap seats
3.12 Electronic taps and/or valves
3.12.1 General
3.12.2 Power failure
3.12.3 Electrical safety
3.12.4 Electromagnetic compatibility
4 Performance requirements
4.1 General
4.2 Plastic materials used for plastic-bodied taps
4.3 Hydraulic strength test
4.4 Surface-mounting strength test for taps
4.5 Watertightness under pressure
4.6 Nominal flow rate
4.6.1 General High pressure Low and unequal pressure
4.6.2 Outlets where conformance to AS/NZS 6400 is mandatory High pressure Low and unequal pressure
4.6.3 Other taps and outlets
4.7 Contamination of water
4.8 Torque of fabricated joints
4.9 Torque of head to body
4.10 Torque of operating mechanism
4.11 Endurance test for taps and tap components
4.11.1 Endurance test for tap operating mechanisms General Pre-endurance testing Cycles Subsequent tests
4.12 Strength of connector nut and assembly
4.13 Strength of button-operated and foot-operated taps
4.14 Resistance of handle to removal
4.15 Power failure for electronically controlled taps
4.16 Rotating or swivel outlet
Appendix A
A.1 Scope
A.2 Relevance
A.3 Terms and definitions
A.4 Testing
A.4.1 Type testing
A.4.2 Batch release testing
A.4.3 Retesting
Appendix B
B.1 Scope
B.2 Principle
B.3 Apparatus
B.4 Procedure
B.5 Test report
Appendix C
C.1 Scope
C.2 Principle
C.3 Application
C.4 Apparatus
C.4.1 Pressurizing system
C.4.2 Test rig
C.4.3 Test sample
C.4.4 Pressure gauge
C.4.5 Thermometer
C.4.6 Timing device
C.5 Testing environment
C.5.1 Safety
C.5.2 Conditioning of tap assemblies
C.6 Procedure
C.7 Test report
Appendix D
D.1 Scope
D.2 Principle
D.3 Apparatus
D.4 Procedure
D.5 Test report
Appendix E
E.1 Scope
E.2 Principle
E.3 Apparatus
E.3.1 Pressurizing system
E.3.2 End connections
E.3.3 Pressure gauge
E.4 Procedure
E.4.1 Hydrostatic test
E.4.2 Pneumatic test
E.5 Test report
Appendix F
F.1 General
F.2 Principle
F.3 Apparatus
F.4 Procedure
F.5 Test report
Appendix G
G.1 Scope
G.2 Principle
G.3 Apparatus
G.4 Procedure
G.5 Test report
Appendix H
H.1 Scope
H.2 Principle
H.3 Apparatus
H.4 Procedure
H.5 Test report
Appendix I
I.1 Scope
I.2 Principle
I.3 Application
I.4 Apparatus
I.5 Procedure
I.6 Test report
Appendix J
J.1 Scope
J.2 Principle
J.3 Application
J.4 Apparatus
J.4.1 Test rig
J.4.2 Water supply system
J.4.3 Measurement of pressure
J.4.4 Timing and control equipment
J.4.5 Temperature of measurement
J.5 Procedure
J.6 Test report
Appendix K
K.1 Scope
K.2 Principle
K.3 Apparatus
K.4 Procedure
K.5 Test report
Appendix L
L.1 Scope
L.2 Principle
L.3 Apparatus
L.4 Procedure
L.5 Test report
Appendix M
M.1 Scope
M.2 Dimensions
M.3 Valve seating
M.3.1 General
M.3.2 Dimensions
M.4 Handles
Appendix N
N.1 Scope
N.2 General
N.3 Typical examples of simulated samples
N.4 Special issues
N.5 Component documentation
Appendix O
O.1 General
O.2 Principle
O.3 Apparatus
O.4 Procedure
O.5 Test report
Appendix P
P.1 Scope
P.2 Principle
P.3 Application
P.4 Apparatus
P.4.1 Test rig
P.4.2 Water supply system
P.4.3 Measurement of pressure
P.4.4 Measurement of temperature
P.4.5 Timing and control equipment
P.5 Procedure
P.6 Test report
Appendix Q
Q.1 Scope
Q.2 Principle
Q.3 Application
Q.4 Apparatus
Q.4.1 Test rig
Q.4.2 Water supply system
Q.4.3 Measurement of pressure
Q.4.4 Timing and control equipment
Q.4.5 Temperature of measurement
Q.4.6 Procedure
Q.5 Test report
Appendix R
R.1 Scope
R.2 Principle
R.3 Application
R.4 Apparatus
R.4.1 Test rig
R.4.2 Water supply system
R.4.3 Measurement of pressure
R.4.4 Timing and control equipment
R.4.5 Temperature of measurement
R.5 Procedure
R.6 Test report
Appendix S
S.1 Scope
S.2 Principle
S.3 Application
S.4 Apparatus
S.4.1 Test rig
S.4.2 Water supply system
S.4.3 Measurement of pressure
S.4.4 Timing and control equipment
S.4.5 Temperature of measurement
S.5 Procedure
S.6 Test report
Appendix T
T.1 Scope
T.2 Principle
T.3 Visual examination before and after tests
T.4 Corrosion resistance
T.5 Performance requirements
T.6 Adhesion of electrodeposited and PVD coatings
T.6.1 Metal substrate
T.6.2 Plastic substrate
Amendment control sheet
AS 3718:2021
Amendment No. 1 (2024)
Correction amendment
Cited references in this standard
Content history
DR2 AS 3718:2021
Inclusive of GST
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