|
Engineering
with nature
Copyright © 2010
WISY AG. All rights
reserved. 05/31/10
E-Mail Kontakt
| |
|
  
   |
 |
|
WFF150 (WF 1011) |
WFF100 (WF 2011) |
|
For cleaner rainwater for use in the house
-
For connecting to the drainpipe in the ground
-
The unique construction of the vertically placed fine filter washes out the large and fine dirt. Moss, leaves and insects are automatically washed into the drain.
-
Absolutely safe function
-
Over 90% of the rainwater is collected
-
Meets DIN 1986
-
Extension pipe (500 mm) is included.
|
The vortex fine filter (WFF100/150)
|
|
|
![]()
|
|
-
The WFF, that is connected to a horizontal drain, filters the rainwater from the roof which is then led to a cistern.
-
The rainwater coming from the roof runs into the side of the WFF and is widely spread over the cylinder-shaped filter mesh. The rainwater from the roof is drawn through the vertically placed fine filter there, by exploiting the natural adhesion forces (surface tension), and is led through the outlet to the storage cistern, whilst the dirt is washed into the drain with the remaining water. Over 90% of the rainwater entering the WFF is filtered by this principle.
-
The full cross-section of the rainwater drainages system remains continuously open in the WFF
-
There are no reductions in the cross-section of this appliance in which dirt and water can collect. This is especially important with torrential rainfalls where large quantities of water
enter. In such cases over 50% of the filtered water is still led to the storage cistern. Excess rainwater is led directly into the drain.
-
The filter mesh largely cleans itself because practically nothing can remain on the vertical mesh.
-
Pitched roofs of slate, clay or concrete tiles are most suitable for collecting rainwater. Planted roof areas are less suitable because of the low water-collection efficiency. Non-sealed asbestos cement roofs are unsuitable. They not only cause environmental and health problems but their fibres tend to block the fine filter mesh.
-
With the help of the blind insert the collection and filtering of the appliance can be stopped. The rainwater from the roof then flows directly into the drain (stopping the rainwater system, winter operation).
|
|
|
|
WFF150 (WF 1011)
|
The WFF150 equipment:
Housing of polypropylene, filter of stainless-steel, rainwater inlet DN 150, cistern inlet DN 100, drain connection DN
150. All pipe connections can be turned
360º. |
|
|
WFF100 (WF 2011)
|
The WFF100 equipment: Housing of polypropylene, filter of stainless-steel, rainwater inlet DN 100, cistern inlet DN 100, drain connection DN 100, cistern and drain connections are fixed on opposite sides. The rainwater inlet can be turned
360º. |
 |
Also applies to installed extension pieces, provided straight cut original WISY pipes are used. |
|
Area of application
|
The effectiveness of the WFF is dependent upon various influences (quantity of rainfall, roof size and pitch, coefficient of discharge etc.). An approximate value for use could be:
| WFF100 |
for roof areas of up to 200m² |
| WFF150 |
for roof areas of up to 500m² |
| WFF300 |
for roof areas of up to 3000m² |
|
What is what?
|
|
1 Housing cover (inspection
opening),
2 Catch pin to secure the lid, 3 Lifting strap,
4 filter insert, 5 Groove for securing cover,
6 Intermediate or closing ring to take cover,
7 Rainwater inlet, 8 Cistern inlet, 9 Drain
connection,
10 Centering pin, 11 Reducing piece (accessory),
12 Centering groove, 13 Cutting mask, 14 Extension piece
Extension pieces are manufactured
with PE. The diameter is DN 300 and thus fits both WFF types.
The extension piece is required for deeper installations of the vortex fine filter. This raises the inspection opening to ground level.
|
|
|
 |
 |
|
WFF100
|
WFF150
|
|
|
|
|
The closing ring enables paving to be laid. The sunken lid can be easily unlocked by turning. |
|
Fine filter wall clips
(WH 0303) |
|
There are appropriate wall holders for both Vortex fine filters for installation inside rooms. |
|
Soakaway sieve
|
Soakaway sieve (VS 0304 for WFF100,
VS 0301 for WFF150) |
- There are different methods for soaking away excess and remaining water. The most ideal will depend on the area available, the permeability of the subsoil and the groundwater conditions.
- A soakaway sieve can always be inserted in the WFF. It traps large and fine dirt and prevents silting of the soakaway trenches.
- The soakaway sieve has to be emptied more often.
|
|
|
|
 |