Wedge Wire Technology and Profiles
Wedge wire screen is a welded vee wire stainless steel construction mainly used for filtration, separation and retention of media. It is made of surface profiles, usually V-shaped (wedge shaped) , that are resistance welded onto support profiles.
The distance between the surface profiles is controlled very accurately and forms the slot opening through which the filtrate flows.
FOTI – FITO
The direction of the filtering flow is determined by the position of the surface profiles in relation to the support profiles. Wedge wire tubes are either flow out to in (FOTI) or flow in to out (FITO).
Wedge wire advantages
- Non-clogging: the continuous slot formed by the V-shaped surface wires ensures a two-point contact between the particles and the slot, which minimizes clogging
- High-precision slot sizes
- Surface filtration: the V-shaped wires allow easy cleaning by mechanical scraping or back flushing
- Longer life time
- Low pressure drop
- Strong construction: for most applications, the wedge wire screens are self-supporting
- Engineered to high standards
Product overview
Almost all shapes and sizes can be developed according to the customer’s requirements, starting from two basic forms:
- Slot tubes – radial external wire
- Flat screens
Overview:
Some of the materials of Construction
| AISI | DIN | UNS | Trade name |
|---|---|---|---|
| 3.7035 | Titanium GR II | ||
| 430 | 1.4016 | S43000 | |
| 304 | 1.4301 | S30400 | |
| 321 | 1.4541 | S32100 | |
| 316L | 1.4404 | S31603 | |
| 316Ti | 1.4571 | ||
| 317LN | 1.4439 | ||
| 1.4539 | N08904 | Uranus B6 | |
| 2.4360 | N04400 | Monel 400 | |
| 2.4819 | N10276 | Hastelloy C276 | |
| 1.4462 | S31803 | Uranus 45N Duplex | |
| Super duplex | |||
| 1.4547 | 254 SMO | ||
| Impact + (wear resistant material) |