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316 Stainless Steel Flanged Offtakes Clamps
Derwent Industries 316 Stainless Steel Flanged Offtakes are Australian manufactured. The range of Flanged Offtakes are available in various sizes with the number of segments dependent on pipe OD and offtake required. Flanged offtakes are an ideal solution to add new service connections without the need for service interruption.
- Feature
- 316 Stainless Steel for Superior Corrosion Protection
- Studs and Nuts coated with molybond to prevent galling
- Flanges 316 SS
- Table C/D to AS 4087 standard
- - Table C/D to AS 4087 standard - Others available on Request
- Nitrile Gasket: Other gasket materials are available on request
- Flanged Offtakes are fully passivated, ensuring superior quality
- All studs are supplied with plastic thread protectors
- Manufactured in Australia
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Applications:
The Derwent Industries Flanged Offtakes are ideal for new service connections on existing or new mains. The ability to tap an existing main under pressure through the utilisation of a Stainless Steel Flanged Offtake, eliminates the need to shut the main, interrupting service to utility customers as well as reducing the risk of contamination via a cut in.
Please refer to installation instruction for all installations.
| Product Code | Description |
|---|---|
SIZE RANGE: | DN100 – DN 900 |
OFFTAKE SIZES: | DN100 / 150 / 225 / 250 / 300 |
TEMPERATURE RANGE: | -10°C to 60°C |
MAX. OPERATING PRESSURE: | 1600 kPa (DN100-450) |
QUALITY ASSURANCE: | ISO9001:2015 |
CERTIFICATE No.: | QEC2004 |
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FAQ
What are 316 Stainless Steel Flanged Offtake Clamps and how do they work?
Derwent Industries 316 Stainless Steel Flanged Offtake Clamps are Australian-manufactured repair/tapping fittings designed to add new flanged branch connections to existing water, wastewater, or industrial pipelines.
- Under-Pressure Tapping: They allow water authorities and contractors to perform “hot tapping” under full line pressure, completely eliminating the need to shut down the main supply or disrupt service to utility customers.
- Risk Reduction: Tapping under pressure reduces contamination risks associated with dewatering and cutting into live water mains.
What are the key design features and material specifications?
Manufactured in Australia to exacting standards, these offtake clamps incorporate premium materials and engineering features:
- 316 Stainless Steel Construction: Full Grade 316 SS body and flanges for superior corrosion resistance and longevity. Fully passivated to maximize chemical and environmental durability.
- Anti-Galling Fasteners: Fastener studs and nuts are coated with Molybond to prevent thread galling during high-torque installation. Plastic thread protectors are included on all studs.
- Gasket Sealing: Standard high-grade Nitrile gasket for robust seal performance (other gasket materials available upon request).
- Segmented Design: Constructed in multiple segments tailored to specific pipe outside diameters (OD) and required branch outlet sizes.
What flange standards and sizing options are available?
- Standard Flange Drilling: Supplied as standard with Table C/D flanges to AS 4087 standards.
- Custom Flange Drilling: Alternate flange configurations (e.g., Table E, ANSI 150, EN 1092) are available on request to suit specific project or valve connections.
What are the primary applications for 316 SS Flanged Offtakes?
They are primarily used across municipal civil water infrastructure, industrial plant networks, and irrigation pipelines:
- Live Branch Tappings: Creating new branch lines, hydrant connections, or bypass loops on active water mains.
- Service retrofits: Adding new connection points without customer supply interruptions.
Product Summary: 316 Stainless Steel Flanged Offtake Clamps
| Feature | Specification |
|---|---|
| Origin | 100% Manufactured in Australia |
| Body & Flange Material | Full 316 Stainless Steel (Fully Passivated) |
| Fasteners | 316 SS Studs & Nuts coated with Molybond (anti-galling) |
| Flange Pattern | AS 4087 Table C/D standard (Others on request) |
| Gasket Material | Nitrile (Standard); alternative materials upon request |
| Protection | Plastic thread protectors on all studs |
| Primary Advantage | Under-pressure tapping (zero service interruption / reduced contamination risk) |
