Rewatec bypass separators are designed to treat all flows generated by rainfall rates of up to 6.5mm/hr. These separators are used when it is considered an acceptable risk not to provide full treatment for high flows, for example where only small spillages occur and the risk of a spillage is small. Our bypass separators are engineered to allow any surface water flow exceeding the nominal size to pass directly to ground without entering the separation chamber.
The specified drainage areas for each Rewatec bypass separator are designed in accordance with BS EN858 and the standards set out by the Environment Agency.
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that Premier Tech Water & Environment Ltd is consulted before specifying.
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| Access Cover Diameter (?) | 600 mm | |
| Diameter (?) | 1016 mm | |
| Height (?) | 2200 mm | |
| Length (?) | 1400 mm | |
| Pipe Diameter (?) | 150 mm | |
| Width (?) | 1016 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB3S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Fuel storage sites , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 3 l/s | |
| Max Area Drained (?) | 1667 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 600 mm | |
| Diameter (?) | 1016 mm | |
| Height (?) | 1875 mm | |
| Length (?) | 1785 mm | |
| Pipe Diameter (?) | 150 mm | |
| Width (?) | 1016 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB4.5S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 4.5 l/s | |
| Max Area Drained (?) | 2500 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 600 mm | |
| Diameter (?) | 1016 mm | |
| Height (?) | 1875 mm | |
| Length (?) | 1975 mm | |
| Pipe Diameter (?) | 150 mm | |
| Width (?) | 1016 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB6S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 6 l/s | |
| Max Area Drained (?) | 3333 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 600 mm | |
| Diameter (?) | 1016 mm | |
| Height (?) | 1875 mm | |
| Length (?) | 2165 mm | |
| Pipe Diameter (?) | 225 mm | |
| Width (?) | 1016 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB8S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 8 l/s | |
| Max Area Drained (?) | 4444 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 600 mm | |
| Diameter (?) | 1016 mm | |
| Height (?) | 1875 mm | |
| Length (?) | 2485 mm | |
| Pipe Diameter (?) | 225 mm | |
| Width (?) | 1016 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB10S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 10 l/s | |
| Max Area Drained (?) | 5555 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 600 mm | |
| Diameter (?) | 1200 mm | |
| Height (?) | 2150 mm | |
| Length (?) | 2670 mm | |
| Pipe Diameter (?) | 225 mm | |
| Width (?) | 1200 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB15S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 15 l/s | |
| Max Area Drained (?) | 8333 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 1200 mm | |
| Height (?) | 2150 mm | |
| Length (?) | 3115 mm | |
| Pipe Diameter (?) | 225 mm | |
| Width (?) | 1200 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB20S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 20 l/s | |
| Max Area Drained (?) | 11111 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 1200 mm | |
| Height (?) | 2150 mm | |
| Length (?) | 3555 mm | |
| Pipe Diameter (?) | 300 mm | |
| Width (?) | 1200 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB25S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 25 l/s | |
| Max Area Drained (?) | 13889 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 1500 mm | |
| Height (?) | 2690 mm | |
| Length (?) | 3520 mm | |
| Pipe Diameter (?) | 375 mm | |
| Width (?) | 1500 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB30S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 30 l/s | |
| Max Area Drained (?) | 16667 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 1500 mm | |
| Height (?) | 2690 mm | |
| Length (?) | 4090 mm | |
| Pipe Diameter (?) | 375 mm | |
| Width (?) | 1500 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB40S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 40 l/s | |
| Max Area Drained (?) | 22222 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 1800 mm | |
| Height (?) | 3300 mm | |
| Length (?) | 4415 mm | |
| Pipe Diameter (?) | 375 mm | |
| Width (?) | 1800 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB60S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 60 l/s | |
| Max Area Drained (?) | 33333 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 1800 mm | |
| Height (?) | 3300 mm | |
| Length (?) | 5225 mm | |
| Pipe Diameter (?) | 450 mm | |
| Width (?) | 1800 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB80S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 80 l/s | |
| Max Area Drained (?) | 44444 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 1800 mm | |
| Height (?) | 3300 mm | |
| Length (?) | 6010 mm | |
| Pipe Diameter (?) | 450 mm | |
| Width (?) | 1800 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB100S/27 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 100 l/s | |
| Max Area Drained (?) | 55556 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 2500 mm | |
| Height (?) | 3000 mm | |
| Length (?) | 6781 mm | |
| Pipe Diameter (?) | 600 mm | |
| Width (?) | 2500 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB135S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 135 l/s | |
| Max Area Drained (?) | 75000 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 2500 mm | |
| Height (?) | 3000 mm | |
| Length (?) | 8973 mm | |
| Pipe Diameter (?) | 600 mm | |
| Width (?) | 2500 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB170S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 170 l/s | |
| Max Area Drained (?) | 94444 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 2500 mm | |
| Height (?) | 3000 mm | |
| Length (?) | 9878 mm | |
| Pipe Diameter (?) | 600 mm | |
| Width (?) | 2500 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB200S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 200 l/s | |
| Max Area Drained (?) | 111111 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 2500 mm | |
| Height (?) | 3000 mm | |
| Length (?) | 15281 mm | |
| Pipe Diameter (?) | 600 mm | |
| Width (?) | 2500 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB300S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 300 l/s | |
| Max Area Drained (?) | 166667 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 2500 mm | |
| Height (?) | 3000 mm | |
| Length (?) | 15729 mm | |
| Pipe Diameter (?) | 600 mm | |
| Width (?) | 2500 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB335S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 335 l/s | |
| Max Area Drained (?) | 186111 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 2500 mm | |
| Height (?) | 3000 mm | |
| Length (?) | 18535 mm | |
| Pipe Diameter (?) | 600 mm | |
| Width (?) | 2500 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB370S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 370 l/s | |
| Max Area Drained (?) | 205555 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |
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| Access Cover Diameter (?) | 750 mm | |
| Diameter (?) | 4000 mm | |
| Height (?) | 4100 mm | |
| Length (?) | 11987 mm | |
| Pipe Diameter (?) | 600 mm | |
| Width (?) | 4000 mm | |
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| CE Marking (?) | ||
| Standards (?) | EN 858-1-2 , ISO 14001 , ISO 9001 | |
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| Number of Modules (?) | 1 | |
| Product ID Number (?) | CNSB500S/21 | |
| Typical Building Sector (?) | Commercial , Industrial | |
| Typical Building Type (?) | Car parks , Fuel storage sites , Industrial estates , Refuel facilities , Roadways , Vehicle workshops | |
| Warranty (?) | 25 years | 100% |
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| Features (?) | Compact and easy to install , Durable GRP design , Highly reliable , Low maintenance costs , Preserves water quality in lakes and rivers , Prevents environmental contamination | |
| Flow Range (?) | 500 l/s | |
| Max Area Drained (?) | 277778 m2 | |
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| Shape (?) | Cylindric | |
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| Optional Extras (?) | Alarm control panel , Shaft extensions | |