3P Volume filter VF12

Industrial filter

Operating principle

  1. As water arrives the level builds up and overtops the filter lip, so ensuring it is distributed evenly across the whole width of the filter cascade.
  2. Pre cleaning through the cascades. Largest dirt particles are led across the primary filter cascades directly to the sewer.
  3. Pre filtered water then flows over the secondary filter sieve (Mesh size 0,4 x 1 mm). Due to the special mesh structure of the sieve, any dirt falls directly down onto the bottom of the shaft. In case of heavy rainfalls, the filter has more loss, as the water washes away the filtered dirt into the sewer.
  4. The cleaned water is being absorbed in the lower tank and directed through a tube DN 150 into the storage.
  5. Dirt goes to the sewer through the shaft.

Rainwater filter for larger roof areas. Filter for installation in concrete ring or other structural chamber (Ø 2000 or Ø 2500 mm).

The filter can be delivered directly to the site, or pre-fitted off-site. The proven 3P two-step Volume Filter cleaning system gives a high level of filtering efficiency, independent of flow rate. Due to the steep inclination of the two step filter cartridge, the filtered out debris is continuously washed away to sewer. The sewer outlet is installed within the chamber wall. The filtered out material falls to the base of the chamber and is washed away during the next intense rainfall event.

Connection capacity, according to DIN 18481:
3933 m² roof area at rainfall intensity of 300 l/(sxha).

A larger area can be connected using a bypass-installation.

Maximum flow rate of filter sieve:
18 l/sec = 64,8 m³ clean water per hour.

Inlet rainwater: DN 300
Outlet to storage: DN 250
Outlet to sewer: DN 300

The height difference between inlet and outlet: 600 mm, DN 300 KG elbows are supplied for mounting in concrete ring.

The filter should be cleaned depending on the contamination loading 1 - 2 times during the year.

Technical Data

Filter according to DIN 1989-2, Typ C

Inlet rainwater: 1 x DN 300
Outlet to storage: DN 250
Outlet to sewer: DN 300

Height difference between inlet and outlet: 320 mm (center)

Filter body material: stainless steel 4016 mesh filter material: stainless steel 1.4301 mesh size: 0.390 x 0.980 mm
Dimensions: 1200 x 1300 x 800 mm
(Dimension: C = 780 + foot adjustment 200 mm)

Weight: 39,5 kg

A 780 mm
B 1070 mm
C 780 mm
D 1200 mm
E 600 mm
F 275 mm
G 880 mm

Filter test

Average rainfall in Germany 80% less than 15 l (sxha), which results in a volume flow of 5.9 l / s with a roof area of ​​3933 m².

Pipe diameter: DN 300
max. flow: 118 l/s
connectable area at max. 200 l/(sxha): 8500 m²
connectable area at max. 300 l/(sxha): 3933 m²

Application

Installation of the filter in a pilot shaft

As shown below with feeding-in and bypassinstallation. High security because of bypassinstallation, therefore larger roof areas can be connected.

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