Cartridge filter
RWT manufactures cartridge filters for flow rates up to 200 m³/h. The cartridge filters are used to hold back dirt and suspended substances and as fine filters to protect sensitive units.
Design
 RWT cartridge filters consist of:
- an upper torispherical head with vessel flange, ventilation connection pieces and cover handles
- a cylindrical section with a lower torispherical head and a vessel flange
- flange tubes for raw water input, pure water output, flushing water output and draining
- screwed-in filter cartridges made of Polypropylene (PP) with exchangeable filter cloth
- three vessel support feet
Data:
| Type |
KEF
1 |
KEF
2 |
KEF
3 |
KEF
4 |
KEF
5 |
KEF
6 |
KEF
7 |
KEF
8 |
Capacity
[m3/h] |
14 |
20 |
25 |
35 |
55 |
90 |
125 |
200 |
Total height H
[mm] |
1000 |
1000 |
1000 |
1000 |
1000 |
1000 |
1000 |
1000 |
Empty weight
[kg] |
80 |
100 |
105 |
150 |
200 |
220 |
245 |
280 |
Vessel connection
[DN] |
50 |
65 |
65 |
80 |
100 |
125 |
150 |
200 |
Design:
The cartridge filters were designed for the following conditions:
- max. operating pressure 10 bar
- max. operating temperature 40 °C
Filter systems for filtration, iron removal and demanganisation
RWT manufactures standardised gravel filter units (of type KIF). The units are ready-for-use. The performance data for filtration, iron removal and demanganisation specified below are based on values obtained through many years of experience and are used for orientation. Strictly, verfication of design must be carried out using current raw water values as a basis. Deacidification filters, activated carbon filters and GIH filters must always be designed to suit a particular application.
Design and Layout
 The filter vessels consist of:
- upper and lower torispherical head with cylindrical shell
- flanged-in or welded-in nozzle plate, including screwed-in filter nozzles
- internal flushing funnel
- all required connection nozzles for raw water input, pure water output, backwash water input and output, flushing air and venting
- deflectors at the flushing air connection nozzles
- vessel support feet, manholes/hand holes and name plate
Performance data:
| Type |
Diameter
Ø D
[mm] |
Filtration
output
[m3/h] |
Iron removal
output
[m3/h] |
Demanganisation
output
[m3/h] |
| KIF 35 |
356 |
1,5 |
1 |
0,75 |
| KIF 45 |
457 |
2,5 |
1,5 |
1 |
| KIF 50 |
508 |
3 |
2 |
1,5 |
| KIF 60 |
600 |
4 |
2,5 |
2 |
| KIF 70 |
700 |
5,5 |
3,5 |
3 |
| KIF 80 |
800 |
7 |
5 |
4 |
| KIF 90 |
900 |
9 |
6 |
5 |
| KIF 100 |
1000 |
12 |
7 |
6 |
| KIF 120 |
1200 |
17 |
11 |
9 |
| KIF 140 |
1400 |
24 |
15 |
12 |
| KIF 160 |
1600 |
30 |
20 |
16 |
| KIF 180 |
1800 |
38 |
25 |
20 |
| KIF 200 |
2000 |
45 |
30 |
25 |
| KIF 220 |
2200 |
55 |
38 |
30 |
| KIF 240 |
2400 |
65 |
45 |
35 |
| KIF 260 |
2600 |
80 |
50 |
40 |
| KIF 280 |
2800 |
90 |
60 |
45 |
| KIF 300 |
3000 |
100 |
70 |
55 |
| KIF 350 |
3500 |
150 |
95 |
75 |
Design:
The filter vessels were designed for the following conditions:
- Max. operating pressure: 4 bar (g) with KIF 35 and KIF 45 -
6 bar (g) with KIF 50 and up
- Max. operating temperature: 40 °C
A customer-specific design with deviating values for pressure and temperature is possible upon request.
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