MATERIAL SPECIFICATION & STANDARDS
Universal Couplings designed and manufactured under the quality management system certified to ISO9001:1994. Hydrostatic testing conforms to the standard of AWWA/ANSI C219.
Center Sleeve – Rolled Steel to BS EN 10025-1993 Grade S275
End Rings – Ductile iron to BS EN1563-1997; Grade EN-GJS-450-10
Bolts – To BS EN ISO 898:1:1999 Grade 4.8
Nuts – To BS 970: Part 1: S304 Stainless Steel
Washers – To BS 970: Part 1: S304 Stainless Steel
Gasket – EPDM to BS 681.1-1996
Coating
The Center Sleeve and End Rings are Epoxy Coated, which is certified for potable water.
Working Pressure: 1.6Mpa
Testing pressure: 2.4Mpa
Working Temperature:0℃ to +100℃
Coupling caters for a total angular deflection of ±3 degrees.
| Pipe Nom | Pipe Materials | OD Range (mm) | Bolt Length (mm) |
|---|---|---|---|
| 150mm/3″ | Ductile Iron, PVCu, Cast Iron, Steel,Cast Iron Met&Imp AC | 88.1-102.4 | M12×175 |
| 100mm/4″ | Ductile Iron, PVCu, Cast Iron, Steel,Cast Iron Met&Imp AC | 109.6-127.8 | M12×175 |
| 150mm/6″ | Ductile Iron, PVCu, Cast Iron, Steel,Cast Iron Met&Imp AC | 158.2-181.6 | M12×200 |
| 200mm/8″ | Ductile Iron, PVCu, Cast Iron, Steel,Cast Iron Met&Imp AC | 218.1-235.0 | M12×200 |
| 250mm/10″ | Ductile Iron, PVCu, Cast Iron, Steel,Cast Iron Met&Imp AC | 272.0-289.0 | M12×215 |
| 300mm/12″ | Ductile Iron, PVCu, Cast Iron, Steel,Cast Iron Met&Imp AC | 322.9-339.4 | M12×215 |
