IS 2963:1979 is the Indian Standard (BIS) for copper alloy waste fittings for wash basins and sinks. This standard covers the requirements for materials, dimensions, construction, and finish of copper alloy waste fittings used in sanitary appliances like wash basins and sinks. It establishes uniform threading and sizing to ensure leak-proof and interchangeable plumbing connections.
copper alloy waste fittings for wash basins and sinks
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Nominal Thread Size (Wash Basin) | G 1 1/4 (32 mm) | G 1 1/4 | EN 274-1 |
| Maximum Lead (Pb) Content in Brass Alloy | 3.5% (referencing Grade II brass from IS 291) | ≤ 0.25% (for wetted surfaces, driven by health regulations) | ASME A112.18.2 (by reference to NSF/ANSI 372) |
| Waste Fitting Flow Rate Requirement | Not defined as a performance metric; controlled by dimensions. | ≥ 0.5 L/s (for basin waste without overflow) | EN 274-1 |
| Overflow Performance Requirement | Not defined as a performance metric. | Must handle a flow of ≥ 0.25 L/s | EN 274-1 |
| Minimum Chromium Plating Thickness | 0.3 µm (Service Grade SC 2 of IS 1068) | Not specified; performance-based (must pass 200-hour Neutral Salt Spray test) | EN 274-1 |
| Water Tightness Test | 1.5 m water head (~14.7 kPa) for 2 minutes | 0.1 bar (10 kPa) for 5 minutes | EN 274-2 |
| Plating Adhesion Test | Thermal cycling test (quenching from 150°C) | Cross-cut test (grid-scribing and tape pull) | EN 274-2 (references ISO 2409) |