AVK SUPA MAXI™ STRAIGHT COUPLING, PN 16
Universal and tensile, A2 bolts, EPDM sealings
Jim Marsden
National Sales Manager Mechanical & Fabricated Fittings Water
Supa Maxi™ straight coupling, universal and tensile with A2 bolts / A4 nuts for drinking water and neutral liquids -10°C to +70°C
AVK’s Supa Maxi™ range of universal tensile couplings sets a new standard. The patented SupaGrip™ sealing support system with flexible bracket ensures full support of the gasket and full tensile strength on all pipe types up to PN 16. Supa Maxi™ couplings are very easy to mount with the possibility of ±4° angular deflection, the permanent protection caps, the lifting eye and the fact that they are tightened from the sleeve side with no need for re-tightening the bolts.
| Variant 631/00-001 | |
|---|---|
| Connection: | Supa Maxi™ Coupling |
| Material: | Ductile Iron |
| DN: | DN50 - DN800 |
| PN: | PN 16 |
Features
- Patented SupaGrip™ sealing support system with flexible bracket ensures full support of the gasket even at minimum pipe size
- Full tensile strength on all pipes is ensured by two different metal grip segments - every other of gunmetal for PE/PVC and of hardened stainless steel for cast iron/ductile iron/steel/stainless steel/GRP/asbestos cement pipes. For PE pipes a support bush is to be used.
- ±4° angular deflection on each side
- Large tolerance ranges
- Ductile iron body and bracket of cast steel, fusion bonded epoxy coating in compliance with DIN 3476 part 1 and EN 14901, GSK approved
- Gasket of drinking water approved EPDM rubber
- Bolts of A2 and nuts of A4 are anti-friction coated to prevent galling
- Permanent protection caps protect the coupling during handling and installation
- Large insertion depth tolerances allow for cutting the pipe slightly angled
- Bolts are tightened from the sleeve side for full access when space is limited
- Re-tightening of bolts is not necessary
- Lifting eye in DN100-700
Downloads
Reference nos. and dimensions:
| Ref. no. | DN mm |
Product PN Class |
Seal range mm |
L mm |
D mm |
Theoretical weight/kg |
Notes |
|---|---|---|---|---|---|---|---|
| 631-071-00-6 | 50 | PN16 | 48-71 | 255 | 200 | 6.0 | |
| 631-091-00-6 | 65 | PN16 | 69-91 | 265 | 226 | 7.0 | |
| 631-106-00-6 | 80 | PN16 | 82-106 | 268 | 235 | 7.5 | |
| 631-133-00-6 | 100 | PN16 | 104-133 | 289 | 268 | 11 | |
| 631-161-00-6 | 125 | PN16 | 132-159 | 277 | 285 | 13 | |
| 631-188-00-6 | 150 | PN16 | 159-188 | 314 | 340 | 16 | |
| 631-227-00-6 | 200 | PN16 | 193-227 | 354 | 389 | 25 | |
| 631-257-00-6 | 225 | PN16 | 224-257 | 390 | 437 | 37 | |
| 631-301-00-6 | 250 | PN16 | 266-301 | 381 | 476 | 35 | |
| 631-356-00-6 | 300 | PN16 | 314-356 | 438 | 545 | 45 | |
| 631-396-00-6 | 350 | PN16 | 352-396 | 513 | 612 | 114 | |
| 631-442-00-6 | 400 | PN16 | 392-442 | 526 | 661 | 107 | |
| 631-510-00-6 | 450 | PN16 | 448-510 | 767 | 740 | 177 | |
| 631-552-00-6 | 500 | PN16 | 498-552 | 769 | 772 | 201 | |
| 631-652-00-6 | 600 | PN16 | 604-652 | 767 | 872 | 241 | |
| 631-745-00-6 | 700 | PN16 | 700-745 | 745 | 991 | 396 | PN16 only for non-tensile // Tensile up to 16 bar. |
| 631-842-00-600004 | 800 | PN16 | 800-842 | 740 | 1100 | 454 | For metal/AC pipes // PN16 only for non-tensile // Tensile up to 10 bar. |
Components
| 1. | Nut | Stainless steel A4 |
| 2. | Bolt | Stainless steel A2 |
| 3. | Washer | Stainless steel A2 |
| 4. | Grip segment | Stainless steel / bronze CC491K |
| 5. | Gasket | EPDM |
| 6. | Ductile iron | |
| 7. | Bracket | Cast steel |
| 8. | Protection cap | PE |
Test/Approvals
- Approved according to KIWA Certificate K 66561
- Belgaqua approved material
Standards
- Designed according to EN 14525
