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Vortex flow control shaft 
The dynamic flow control regulates volume flows of up to 65 l/s
Instructions
Sizing form/
Tender file
Tender file
Dimension drawing
With the vortex flow control shaft can be regulated volume flows of up to 65 l/s. The vortex flow control shaft VS-Control External is ideal for retention systems fitted with Graf EcoBloc ditch elements or retention cisterns.
- Continuously variable installation depth of 985 mm – 6500 mm (38.8" – 21' 4")
- Minimal height offset between the inlet and the outlet (315 mm (12.4") VS-Control External S; 445 mm (17.5") VS-Control External M; 505 mm (19.9") VS-Control External L)
- Individually adjustable outflow value
- Support in the planning and dimensioning of our system
- Housing can be shortened
Versatile use
- With storage modules, welded into watertight plastic liners
- With GRAF underground tanks
- With retention tanks provided by the customer
Project-specific design
- Flexible adaptation to the local site conditions using GRAF shaft components
- Project specific demensioning of the replaceable orifice
- Different shaft sizes for individual requirements
Reliable in operation
- No wear because there are no moving parts
- Low-maintenance, because of the self-cleaning-effect through vortex flow
- Extremely good revision capability
S
| order no. | max. discharge value (l/s) | Length (mm) | Height (mm) | Inner Ø dome shaft (mm) | add to enquiry |
|---|---|---|---|---|---|
| 340150 | 2-35 | 615 | 1135 | 400 |
M
| order no. | max. discharge value (l/s) | Length (mm) | Height (mm) | Inner Ø dome shaft (mm) | add to enquiry |
|---|---|---|---|---|---|
| 340151 | 3-50 | 795 | 1880 | 600 |
L
| order no. | max. discharge value (l/s) | Length (mm) | Height (mm) | Inner Ø dome shaft (mm) | add to enquiry |
|---|---|---|---|---|---|
| 340152 | 3-65 | 820 | 1935 | 600 |
