Johnson wedge wire wound water treatment filter

1.Construction Drawing of the Johnson wedge wire wound water treatment filter 

If the slot tubes are used as a carrier for another filter medium for example textile. The surface profile can be:

1. reversed triangular

2. round

3. diamond shaped

In case of round wire the support tubes can be welded with 1, 2 or 3 wires next to each other.

2.Advantages of the Johnson wedge wire wound water treatment filter 

Compared with conventional support elements ( such as perforated tubes, wire mesh, ....) , support elements have following advantages:

1. a smaller contact between the support tube and the filter media there is more active filter area, which creates a larger active filter media and a smaller pressure drop. Thorough cleaning by back flushing possible.

2. a strong mechanical construction

3. large open area

4. easy to clean (back flushing)

3. Standard constructions of Johnson wedge wire wound water treatment filter  (special geometries on request)

The construction of a support tube is described as follows:

surface wire / support wire x number of support wires.
Example: 0,8/2 x 18
This means that the profile wire is Ø 0.8. The support wire is Ø 2 and there are 18 support wires, equally spaced over 360°.

4.Standard constructions of Johnson wedge wire wound water treatment filter