AVK Fabricated STEPPED COUPLING
Stepped coupling with zinc plated and passivated fasteners. Temperature Range: -10°C to +70°C Insulation essential for temperatures of 0°C and below. Maximum Working Pressure: 16 Bar, -0.8 Bar (negative pressure).
The Series 259 is a fabricated stepped coupling, for all ferrous, GRP*, PVC pipes and stainless steel pipe/welded tube suitable**, suitable for use with water, waste water and neutral liquids.
| Variant 259/30-001 | |
|---|---|
| Connection: | Mechanical Joints |
| Material: | Steel |
| DN: | DN400 - DN1200 |
| PN: | PN 10/16/25 |
Features
- Corrosion resistant construction
- EPDM seals
- Short lead times
- Zinc plated and passivated coated fasteners
- Can be fabricated in any size within design range of DN350 to DN1600+
- Fusion bonded epoxy coating
- Sealing range nominal diameter +2mm to -5mm
- Angular deflection across total fitting<DN600 = 8°Dn700 to DN800 = 6°DN900 to DN1200 = 4°
- Can be used for upto -0.8 Bar negative pressure
Options:
- 259/34 - Stainless steel bolts, 259/36 - Sheraplex® bolts
- Special sizes manufactured to order
- Sizes DN1200+ manufactured to order dependant upon application
- 25 Bar on certain sizes
Note:
- This fitting is not designed for end load resistant applications
- *Suitable only for cc-GRP (centrifugally castglass reinforced polyester) and turned end pipes.
- **Suitable for 3mm wall thickness and above - DN300 to DN1000.
Downloads
Datasheet
Installation, operation and maintenance manuals
Reference nos. and dimensions:
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| Reference no. | Dd1 mm |
Dd2 mm |
W mm |
L mm |
Theoretical weight/kg |
|---|---|---|---|---|---|
| 259-30-0429-0406 | 406 | 429 | 536 | 326 | 35 |
| 259-30-0480-0457 | 457 | 480.0 | 587 | 326 | 38 |
| 259-30-0532-0508 | 508 | 532 | 639 | 326 | 41 |
| 259-30-0635-0610 | 610 | 635 | 742 | 270 | 47 |
| 259-30-0738-0711 | 711 | 738 | 845 | 326 | 56 |
| 259-30-0842-0813 | 812.8 | 842.0 | 949 | 326 | 60 |
| 259-30-0945-0914 | 914.4 | 945.0 | 1052 | 326 | 65 |
| 259-30-1048-1016 | 1016.0 | 1048.0 | 1155 | 356 | 79 |
| 259-30-1255-1220 | 1220.0 | 1255.0 | 1362 | 356 | 94 |
Enquiry
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Components
| 1. | Body | Steel Fe 430B |
| 2. | Gland ring | Steel Fe 430B |
| 3. | Seals | EPDM rubber |
| 4. | Studs | Steel gr. 8.8, zinc plated, passivated |
| 5. | Washer | Steel gr. 8, zinc plated, passivated |
| 6. | Nuts | Steel gr. 8, zinc plated, passivated |
Test/Approvals
- Hydraulic test 1.5 x PN
- Belgaqua approved material
- Drinking Water Inspectorate Regulation 31 compliant
- WRAS approved materials
Standards
- 1.5 x PN
- Coating WIS-4-52-01
