Working Principle; Technical Data - Katadyn MF-7 Instrucciones De Montaje, Servicio Y Mantenimiento

1.5 Working Principle

The Katadyn filter element is based on the operating principle of deep-bed filtration. Since filtration is
a separation process, which is produced by the mechanical and physical forces of the ceramic
structure, sediments and microorganisms can be retained in the minute channels of the ceramic
housing. This filtration effect is dependent upon the size of the pores and the thickness of the
ceramic layers. Deep-bed filtration has a unique characteristic, even particles which are smaller than
the absolute pore size are retained on the inner surface of the ceramic by the adsorption principle.
Katadyn ceramic filters are manufactured from various raw materials which conform to a high quality
standard so that a nominal pore size of down to 0.2 µm can be achieved.

1.6 Technical Data

Design pressure:
Test pressure:
Mains connections:
MF-7: 3/4" G internal thread
MF-31: 1 1/4" G internal thread
MF-54: 2" G internal thread
Net weight of filter incl. elements:
MF-7: 19 kg
MF-31: 95 kg
MF-54: 180 kg
Materials: - Filter casing and lid in chrome-nickel steel 18/8 (material 1.4301;AISI 304)
- Fittings in chrome-plated brass
- Pipe sections in galvanised iron (for MF-7)
Flow rate: The curve applies to cleaned filter elements. Increased pressure required for
vertical rises, etc. after filtering are to be deducted from the given flow pressure
when calculating flow rate. The same applies for long stretches of piping before
filtering and for any pipe friction losses thus caused. The flow rate decreases as
fouling on the filter elements increases.
Performance
Chart: MF-7/-31/-54: see Appendix 8.5
We reserve the right to make structural and dimensional alterations in the course of further technical
development.
6 bar
9 bar
~ 3 ~