Wedge wire is the filter media which are made from shaped wire. The profile / surface wires are accurately aligned and then welded to the support rods mostly by automatic resistance welding. Both the profile and the support wires can be with certain wedge shape or other section shape such as water drop , circle, or keystone.

316  (1.4401), 316L (1.4404), 304, 304L  stainless steel are the among the standard material for wedge wire filter elements.

Other exotic materials are also available as request, such as 904L, Hastelloy C276, Hastelloy C22, etc.

Wedge wire mainly shows in two forms: slotted tubes (cylindrical filter element) and flat screen (Johnson screen, sieve). Filter rating ranges from 25 to 3000 microns.

Advantages of wedge wire filter:

  • Strong construction, high strength
  • Excellent media retention
  • Superb backwash ability
  • Less possibility of clogging
  • Long service life
  • Low Maintenance costs
Detail view of the profile and support wire of the wedge wire filter element

Profile and support wire of the wedge wire filter element

Wedge wire filter cartridges / candles

Wedge wire filter elements mainly have filter cartridges (candles) and tube screen. The wedge wire filter cartridges can be applied for direct filtration of fluid or as filter media support for media filtration such as diatomite earth, gravel, etc.

Wedge wire filter cartridges with outer thread end fitting

Wedge wire filter cartridges with outer thread end fitting

Dozens of wedge wire filter cartridges with outer thread end fitting, on a cart

Wedge wire filter cartridges

Wedge wire filter tube screen

The wedge wire filter tube screen is often used for automatic self-cleaning filters, especially for those handling with large fluid volume and impurity is hundreds of microns and up.

Wedge wire filter tube screen for automatic self-cleaning filter

Wedge wire filter tube screen for automatic self-cleaning filter

Wedge wire filter tube screen for ballast water treatment filter

Wedge wire filter tube screen for water filter