Hi-pass Storm Chamber
Storm overflow bypass chamber with circular weir and flow regulator.
Complies with Avis Technique17/00-113 issued by the CSTB for regulated-flow storm overflow bypass chambers.
Operating principle
The Hi-pass, regulated-flow, storm overflow bypass chamber SDOR allows control of the treatment flow rate and diversion of excess run-off effluent in the event of a storm.
The internal circular weir, with counter-baffle, provides a long weir length in a compact unit, ideal for high flow applications and installations where space is limited.
In order to optimise the flow admitted to the treatment plant, this unit is fitted with a flow regulator and, if required, with an adjustable weir. The cylindrical design facilitates adaptation of inlet and outlet positions to fit the existing or desired network layout.
Entirely prefabricated in steel, this bypass chamber is particularly suited to projects where installation time is at a premium.
Analysis of the drainage conditions will enable us to propose the storm overflow best adapted to your particular project.
Features
- Flow regulator fabricated in stainless steel.
- Lifting lugs.
- Round access of diameter 960 mm.
- Access ladder.
- Profiled channel to guide low flows to treatment outlet.
Construction
- Vertical cylindrical section with flat base and top.
- S 235 JR grade steel.
- Protective coating: SA 2,5 sand-blasting then epoxy bicompound or thermally polymerised polyurethane (thickness 600 µm), meeting the adhesion, abrasion resistance and chemical resistance requirements of EN858-1.
- Vessel bracing in compliance with French codes for tanks subjected to pressure due to burial.