Flow Control - Couplings
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PE Couplings
Derwent Industries supplies a range of PE products for HDPE to suit the requirements of Water, Waste Water, Irrigation & Mining. The range of products provides the industry with PE solutions.
- Features:
- Body: Ductile Iron GGG450-10
- Bolts: 316 Stainless Steel
- Lip Seal: EPDM
- Spacer Bush: PE
- Gripper Ring: Brass Ms58
- Flange: Ductile Iron GGG450-10
- Coating: Akzo Nobel Fusion Bonded Epoxy coated to AS/NZS 4158.
Applications:
The Derwent Industries PE Flange Adapters are for use in
Potable Water, Waste Water, Fire, Irrigation and Water Circulation applications and are suitable for both above and below ground installation.
This item is available via special order . Please note that Minimum Order Quantities (MOQ) may apply. Lead times may vary.
| Product Code | Description |
|---|---|
SIZE RANGE: | DN 80-DN 600 (DN50 and DN65 also available not to AS/NZS2638.2) |
ALLOWABLE OPERATING PRESSURE: | 1600 kPa; 1.6 Mpa |
MAXIMUM TEST PRESSURE: | 2400 kPa, 2.4 Mpa |
CERTIFICATION: | SAI Global |
WATERMARK LIC. NO.: | 25890 |
WSAA APPRAISAL No. | PA2106 |
NOTE: | Alternate Flange adaptors and Couplings are available DN355 – DN630. Please contact us for details. |
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FAQ
What industries and applications use Derwent PE Couplings?
Derwent Industries supplies PE products for High-Density Polyethylene (HDPE) piping systems across several key sectors:
- Water & Utilities: Potable water, wastewater, fire systems, and water circulation
- Agriculture & Commercial: Irrigation systems
- Industrial: Mining applications
They are designed for both above-ground and below-ground installations.
What are the key material specifications for Derwent PE Flange Adapters?
- Body & Flange: Ductile Iron GGG450-10
- Coating: Akzo Nobel Fusion Bonded Epoxy (compliant with AS/NZS 4158)
- Bolts: 316 Stainless Steel for high corrosion resistance
- Lip Seal: EPDM rubber
Gripper Ring: Brass (Ms58)
Spacer Bush: Polyethylene (PE)
What installation best practices should be followed for Derwent PE fittings?
- Size Verification: Confirm the coupling/adaptor matches the host pipe dimensions.
- Support Liners: Use an internal support liner if installing on thin-walled PE pipes (>SDR 21) under low internal pressure.
- Pipe Preparation: Chamfer the pipe end prior to insertion to protect the EPDM seal and assist fitting.
- Lubrication: Apply an approved pipe lubricant to the pipe end.
- Assembly: Push the pipe fully to the recommended insert depth, then tighten the locking ring bolts evenly around the fitting until secured tight against the stop.
See Technical Sheet for more details
