Flow Control - Couplings
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Step Couplings
- 316 Stainless Steel for Superior Corrosion Protection
- Studs and Nuts coated to prevent galling
- Flanges are Ductile Iron, Fusion Coated
- EPDM Gasket
- Ease of installation via tension wrench
- All bolts are supplied with plastic thread protectors
Applications:
The Derwent Industries Stepped Variable Couplings are the perfect solution for joining two sections of pipe together. The coupling allows for an OD variance between pipes requiring joining, allowing for a simple repair to damaged sections of pipe or for new joins. Regulations at water authorities may differ as to allowable usage.
Variable Couplings are not suited to all type of pipe, such as Polyethylene unless a form of restraint is included in the coupling.
Please refer to installation instruction for all installations.
Downloads
| Product Code | Description |
|---|---|
SIZE RANGE: | DN100 – DN375 (Other sizes available) |
TEMPERATURE RANGE: | -10°C to 60°C |
MAX. OPERATING PRESSURE: | 1600 kPa (DN40 – DN600) |
DEFLECTION: | DN100 – DN150 – 6° each end on range of coupling. DN200 – DN250 – 3° each end on range of coupling. DN300 – 1.5° each end on range of coupling. |
QUALITY ASSURANCE:
| ISO9001:2015 |








