What is the material required for these end caps?

Virgin polyethylene compound conforming to designations specified in IS 7328, such as PE-WA-50-T006 (for PE 80).

What is the required color of the fitting?

The fitting must be black. Any other color requires agreement between the purchaser and manufacturer (Clause 4.3).

What is the main performance test for these fittings?

A hydrostatic pressure test where the fitting must not rupture under specified stress, temperature, and duration as per Table 2.

Are there specific dimensional checks required?

Yes, dimensions such as spigot outside diameter and wall thickness must comply with the values given in Table 1.

IS 8008

: 2000

Injection Moulded/Machined High-Density Polyethylene (HDPE) Fittings for Potable Water Supplies, Part 3: Specific Requirements for 90° TEES

CurrentFrequently UsedSpecificationWater Resources · Plastic Piping System

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This standard specifies the requirements for injection moulded or machined High-Density Polyethylene (HDPE) 90° tees used for potable water supplies. It covers material properties, dimensional tolerances, physical and mechanical performance, test methods, and marking for fittings.

Injection Moulded/Machined High-Density Polyethylene (HDPE) Fittings for Potable Water Supplies, Part 3: Specific Requirements for 90° TEES

Quick Reference Values

Material Density Minimum0.940 g/cm³ at 27°C

Melt Flow Rate (MFR) Tolerance±20% of the value specified for the raw material

Oven Test Temperature110 ± 2 °C

Hydrostatic Stress for PE 80 at 80°C for 165h test4.0 MPa

Colour of FittingBlack

Practical Notes

Ensure the HDPE material grade of the end cap (e.g., PE 80, PE 100) matches the grade of the pipe it is being fused to for a reliable joint.

Proper fusion welding (butt fusion or electrofusion) is critical; this standard only covers the fitting itself, not the jointing procedure.

The standard covers both injection-moulded fittings and fittings machined from extruded bar stock.