AS NZS 3718 pdf download – Water supply—Tap ware
1.3.7 Flow controller
A device designed to regulate the flow rate so as to maintain a constant flow rate over agiven range of pressures.
1.3.8 Isolating tap
An in-line tap for insertion into the pipeline to deliver water to a tap， valve，fixture,orcombination thereof，and which is shut only for maintenance or failure of the downstreaminstallation.
1.3.9 Kitchen sink tap
A device that is designed to turn on and turn off the flow of water into a sink in a kitchen,food preparation or dishwashing environment.
1.3.10 Laundry tub tap
A device that is designed to turn on and turn off the flow of water into a sink or tub in alaundry or washroom.
1.3.11 Lever tap
A tap that is operated by the movement of a lever.1.3.12 Mixing tap mechanical (non-thermostatic)
A tap into which hot and cold water enters through more than one port and is mixed in achamber.
1.3.13 Nominal flow rafe
The water consumption of a fully open water tap,which is measured in litres per minute,using a dynamic water pressure of—
(a)35 kPa in accordance with Appendix R;
(b)250 kPa; or
(c)the average of 150,250 and 350 kPa in accordance with Appendix G.1.3.14 Nominal size
The size determined from the inlet connection.1.3.15 Non-rising spindle tap
A tap in which the spindle does not rise when the tap is opened.1.3.16OEM (original equipment manufacturer) market
A market segment requiring tap ware components and/or subassemblies utilizing certifiedand/or non-certified components for incorporation into a complete product assemblycertified as part of the subsequent manufacturing process.
The portion of the tap assembly after the shut-off device where water flows for its intendeduse.
1.3.18 Retrofit (retail) market
A market segment requiring tap ware subassemblies, components and/or replacement partsto be installed in the field with other manufacturers’compatible products.
1.3.19 Rising spindle tap
A screw-down tap in which the spindle rises when the tap is opened.
1.3.20 Scaling factor
The ratio of the end-use surface area-to-volume ratio to the test surface area-to-volume ratio.
1.3.21 Sensor taps
A tap operated without physical contact.
1.3.22 Stop tap
A tap with inlet and outlet connections. It usually incorporates a loose jumper valve and permits flow in one direction only.
1.3.23 Tap body
That part of a tap or of a tap assembly that includes the inlet and outlet connections.
1.3.24 Tap head
That part of a tap assembly that is removable and retains the shut-off device.
1.3.25 Tapset breaching piece assembly
Two or more stop tap bodies in an assembly.
1.3.26 Test certificate
A certificate that shows the results of tests undertaken to establish stated requirements.
1.3.27 Timed flow tap
A tap that is automatically turned off after a predetermined delivery time and/or volume.
1.3.28 Unit construction
The components of a tap that cannot be readily removed by unscrewing.
1.3.29 WELS Scheme
Water Efficiency Labelling and Standards Scheme.
1.3.30 High pressure
Where both the hot water and cold water supply pressures are at 150 kPa or above.
1.3.31 Low pressure
Where both the hot water and cold water supply pressures are below 150 kPa.
1.3.32 Unequal pressure
Where the hot water supply pressure is below 150 kPa and the cold supply pressure is at or above 150 kPa.
1.4 SIZE DESIGNATION
The size by which a tap is designated shall be determined by its inlet connection. The designated size shall be between DN 6 and DN 50.
1.5 MARKING REQUIREMENTS
All taps shall be marked legibly and visibly as follows:
(a) Certification mark, the number of this Standard i.e., AS/NZS 3718 and manufacturer’s licence number on the body and head. Where sold as integral tap,marking on the body. Marking shall be durable.
(b) On stop taps, isolating taps and regulating taps, the words ‘INLET’ or ‘IN’, ‘OUTLET’ or ‘OUT’, or a directional arrow.
(c) On taps intended for the supply of hot water only, the letter ‘H’ or the word ‘HOT’ or a red indicator. On taps intended for the supply of tempered water only, the letter ‘W’ or the word ‘WARM’ or a yellow indicator. On taps intended for the supply of cold water only, the letter ‘C’ or the word ‘COLD’ or a blue indicator.