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IS 1711:1984 is the Indian Standard (BIS) for self-closing taps for water supply purposes. This standard prescribes the material, dimensional, manufacturing, and performance requirements for self-closing taps (push taps) used in water supply systems. These fixtures are primarily installed in public places to conserve water by automatically shutting off the flow after a preset duration.
Specifies requirements for self-closing (automatic shut-off) taps, which is a direct parallel to the scope of IS 1711.
BS EN 816:1997BSI (British Standards Institution), United Kingdom
HighCurrent
Sanitary tapware. Automatic shut-off valves PN 10
The UK's adoption of the European standard EN 816, making it technically identical in requirements.
AS/NZS 3718:2021Standards Australia/Standards New Zealand, Australia & New Zealand
MediumCurrent
Water supply - Tapware
A broader tapware standard that includes specific performance clauses for self-closing and timed-flow taps within its scope.
ASME A112.18.1-2018 / CSA B125.1-18ASME/CSA, USA & Canada
MediumCurrent
Plumbing Supply Fittings
A comprehensive standard for all plumbing fittings which contains specific sections on metering and self-closing faucets.
Key Differences
≠IS 1711 mandates a significantly lower endurance life (50,000 cycles for 15mm taps) compared to international standards like EN 816 (200,000 cycles) and ASME A112.18.1 (500,000 cycles), indicating a lower durability requirement.
≠IS 1711 specifies performance via a closing time (3-7 seconds), whereas modern standards like ASME A112.18.1 focus on water conservation by specifying a maximum volume per cycle (e.g., 0.95 litres), a more direct measure of water efficiency.
≠The hydrostatic body strength test in IS 1711 is more stringent (2.0 MPa) than in EN 816 (1.6 MPa) or AS/NZS 3718 (1.5 MPa).
≠Material specifications in IS 1711 are prescriptive, listing specific alloys like Leaded Tin Bronze. Modern standards focus on performance, requiring materials to be dezincification-resistant (DZR) and comply with lead-leaching and potable water safety standards like NSF/ANSI 61.
Key Similarities
≈All standards share the fundamental purpose of regulating non-concussive, self-closing taps to prevent water wastage, primarily for use in public and commercial applications.
≈All standards mandate a set of crucial performance tests, including water tightness under pressure (hydrostatic tests) and mechanical endurance (life cycle tests), to ensure reliability.
≈The general requirements for construction and finish, such as being free from defects, having no sharp edges, and often requiring a durable finish like chromium plating, are common across all the standards.
≈All standards define requirements for the connection ends (e.g., threaded inlets) to ensure interoperability with standard plumbing systems in their respective regions.
Parameter Comparison
Parameter
IS Value
International
Source
Endurance Test (Lifecycle)
50,000 cycles (for 15mm size)
200,000 cycles
EN 816:1996
Closing Performance Criteria
Time-based: Closes in 3 to 7 seconds at 0.05 MPa
Volume-based: Max 0.95 litres (0.25 gal) per cycle
ASME A112.18.1
Hydrostatic Strength Test (Tap Body)
2.0 MPa for 2 minutes
1.6 MPa
EN 816:1996
Water Tightness Test (Seat)
1.4 MPa (Air Pressure)
0.6 MPa (Hydraulic Pressure)
EN 816:1996
Flow Rate Regulation
Not explicitly defined; implied by closing time and pressure.
Mandated maximum flow rates linked to efficiency labels (e.g., WELS scheme in Australia)
AS/NZS 3718:2021
Material Health & Safety
Specifies metallic composition (e.g., Leaded Tin Bronze).
Requires compliance with standards for contact with drinking water (e.g., NSF/ANSI 61).
ASME A112.18.1
⚠ Verify details from original standards before use
Key Values4
Quick Reference Values
standard nominal size15 mm
hydraulic test pressure1.5 MPa
test duration2 minutes minimum
discharge delivery volumeUsually restricted by time/flow limits to prevent wastage