Flange Adaptor and Coupling
The Flange Adaptors and Couplings are widely used in Water distribution lines, Water transmission pipelines, Pump stations, Water treatment and sewage treatment plants, Plant rooms, Meter chambers, Power generation equipment and Gas distribution stations and it could be used for the convey of various media: acid, alkali, water, wastewater, seawater, sewage, drainage, compressed air, oil, gas, etc.
THIT supply different material Flange Adaptors and Couplings, the common material is Ductile Iron, Carbon Steel and Stainless Steel and according to the connected pipes types, there are different types of Flange Adaptors and Couplings.
Reference Standard of Flange Adaptor and Coupling
AWWA C219
AS/NZS 4998
EN14525
Category of Flange Adaptor
No. | Flange Adaptors Type | Product Size Range (DN) |
1 | Universal (Straight) Flange Adaptor for PVC, DI, CI, AC, Steel Pipes | DN40-4000 (1 1/2"-160") |
2 | Restrained Flange Adaptor for PE Pipes | DN50-600 (2"-24") OD" 63-630 |
3 | Quick Flange Adaptor for PE and PVC Pipes | DN40-400 (2"-16") OD" 50-400 |
4 | (Dedicated) Flange Adaptor for PVC Pipes | DN50-600 (2"-24") OD" 63-630 |
5 | (Dedicated) Flange Adaptor for Ductile Iron Pipe | DN50-2600 (2"-104") |
6 | (Dedicated) Flange Adaptor for Steel Pipe | DN50-1200 (2"-48") |
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Universal (Straight) Flange Adaptor | Restrained Flange Adaptor for PE Pipes |
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Quick Flange Adaptor for PE and PVC Pipes | (Dedicated) Flange Adaptor for PVC Pipes |
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(Dedicated) Flange Adaptor for Ductile Iron Pipe | (Dedicated) Flange Adaptor for Steel Pipe |
 | No. | Part Name | Material |
1 | Gland | Ductile Iron/Carbon Steel/Stainless Steel | |
2 | Flange | Ductile Iron/Carbon Steel/Stainless Steel | |
3 | Gasket | EPDM/SBR/NBR/VITON | |
4 | Bolt & Nut & Washer | Galvanized or Dacromet Carbon Steel/Stainless Steel | |
5 | Coating | Liquid Epoxy/FBE (Fusion Bonded Epoxy)/Rilsan Nylon |
Category of Coupling
| No. | Couplings Type | Product Size Range(DN) |
1 | Universal (Straight) Coupling for PVC, DI, CI, AC, Steel Pipes | DN40-4000 (1 1/2"-160") |
2 | Universal Stepped (Reducing) Coupling for PVC, DI, CI, AC, Steel Pipes | DN80-2600 (3"-104") |
3 | Restrained Coupling for PE Pipes | DN50-600 (2"-24") OD" 63-630 |
4 | Gibault Coupling for PVC Pipes | DN50-600 (2"-24") OD" 63-630 |
5 | (Dedicated) Coupling for Ductile Iron Pipes | DN50-2600 (2"-104") |
6 | (Dedicated) Coupling for Steel Pipe | DN50-1200 (2"-48") |
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Universal (Straight) Coupling | Universal Stepped (Reducing) Coupling |
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Restrained Coupling for PE Pipes | Gibault Coupling for PVC Pipes |
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(Dedicated) Coupling for Ductile Iron Pipes | (Dedicated) Coupling for Steel Pipe |
 | No. | Part Name | Material |
1 | Center Sleeve | Ductile Iron/Carbon Steel/Stainless Steel | |
2 | End Ring | Ductile Iron/Carbon Steel/Stainless Steel | |
3 | Bolt & Nut & Washer | Galvanized Carbon Steel/Stainless Steel | |
4 | Gasket | EPDM/SBR/NBR/VITON | |
5 | Coating | Liquid Epoxy/FBE (Fusion Bonded Epoxy) /Rilsan Nylon |
Flange Class of Flange Adaptor and Coupling
Applicable Flange | |
Reference Standard | Class |
EN1092/ISO7005 | PN6/PN10/PN16/PN25/PN40 |
ASME B16.1/B16.5 | 125lb/150lb/300lb |
KS/JIS | 5K/10K/16K/20K |
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