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BIS-ISI-CERTIFICATE

IS 8931 : 2021

Copper Alloy Single Taps, Combination Tap Assemblies, Stop Valves and Single Lever Mixers for Water Services

Copper Alloy Single Taps, Combination Tap Assemblies, Stop Valves and Single Lever Mixers for Water Services
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Copper Alloy Single Taps, Combination Tap Assemblies, Stop Valves, and Single Lever Mixers are plumbing fittings used to control and regulate water flow in residential, commercial, and industrial water supply systems. Manufactured from durable copper alloys such as brass, these fittings provide corrosion resistance, strength, leak-proof performance, and long service life.

Why BIS Certificate is Mandatory for Copper Alloy Single Taps, Combination Tap Assemblies, Stop Valves and Single Lever Mixers for Water Services

BIS certification is mandatory to ensure plumbing fittings meet Indian Standards for safety, material quality, pressure resistance, and performance. Since these products are directly connected to potable water systems, certification prevents leakage, contamination, and premature failure, ensuring consumer safety, durability, and regulatory compliance in the Indian market.

What is BIS Certified for Copper Alloy Single Taps, Combination Tap Assemblies, Stop Valves and Single Lever Mixers for Water Services

The BIS certified specification defines requirements for material composition, mechanical strength, dimensional accuracy, surface finish, plating thickness, pressure performance, and leakage testing. It ensures copper alloy taps and valves comply with Indian Standards, guaranteeing durability, safe water contact, corrosion resistance, and reliable long-term performance in water services.

Test required for Copper Alloy Single Taps, Combination Tap Assemblies, Stop Valves and Single Lever Mixers for Water Services

TitleMandatory/Optional
Material

Optional

Manufacture, workmanship and construction

TitleMandatory/Optional
General, casting, forging, plastic moulding & Machining

Required

Screw threads

Required

Waterway

Required

Flow straightening and aerating device (As per manufacturerdeclaration)

Required

Body seat--
Bonnet assembly--
Gland packing

Required

Flanges

Required

Knob

Required

Dimensions of Single Pillar and Bib Tap, Combination Tap Assembly, Stop Valve and Angle Stop Valve

TitleMandatory/Optional
Minimum Thickness

Required

Body

Required

Bonnet assembly

Required

Washer plate

Required

Seat washer

Required

Dimensions of Single Lever Mixer

TitleMandatory/Optional
concealed diverter for bath and shower mixer

Required

single lever sink mixer with swivel spout

Required

single lever pillar mounted basin mixer

Required

wall mounted single lever sink mixer with swivel spout

Required

single lever bath and shower mixer

Optional

Diameter of Single Lever Cartridge

Optional

Nuts

Optional

Additional Requirements for Accessible Taps

TitleMandatory/Optional
Lever handle

Required

Information on taps

Required

Thermostat installation, Hot & cold water taps identification

Required

Finish

TitleMandatory/Optional
General

Required

Nickel chromium plating on taps & valves, knobs & knobs components of plastic/zinc base alloy

Optional

Performance test

TitleMandatory/Optional
Water tightness characteristic

Required

Pressure resistance characteristicDead load test

Required

Hydraulic characteristic (Flow rate)

Required

Hydraulic characteristic (Flow rate)Additional Requirements for Water Efficiency (Flow rate)

Required

Mechanical strength characteristic

Optional

Mechanical Endurance Characteristics

Optional

Benefits of BIS Certification for Copper Alloy Single Taps, Combination Tap Assemblies, Stop Valves and Single Lever Mixers for Water Services

1. Assured Material Quality
BIS certification ensures the use of approved copper alloys with controlled chemical composition, preventing corrosion, cracking, or contamination in water supply systems.

2. Leak-Proof and Pressure Safety
Certified products undergo pressure and leakage tests, ensuring reliable performance under varying water pressures.

3. Safe for Drinking Water
BIS standards ensure fittings are suitable for potable water use, reducing risks of harmful metal leaching.

4. Legal Market Approval
Mandatory BIS certification allows manufacturers and importers to legally sell products in India without regulatory penalties.

5. Enhanced Brand Credibility
BIS-marked plumbing fittings gain higher trust among builders, contractors, and consumers, improving market acceptance and competitiveness.