A rolled multi-layer sintered wire mesh cartridge rated 1–200 μm for duties where the element has to be cleaned and returned to service. The sintered stack fixes the aperture, so it does not open under differential pressure, and the rigid wall takes a backwash. Welded in house and batch-tested for bubble point and air permeability.
The multi-layer sintered wire mesh cartridge is a flat sintered sheet rolled into a cylinder and seam welded. A protective mesh, the control layer that sets the rating, a dispersion layer and coarser support layers are sintered into one rigid sheet first, then formed to the housing envelope. Ratings run from 1 to 200 μm, and the element runs in liquid and gas service up to 600 °C.
The purpose of the stack is that the aperture is fixed. A woven opening that is only stacked can shift as pressure rises across a loaded element, but here the layers are diffusion-bonded into one sheet, so the pore the element was measured at is the pore it keeps in service. That is what makes this cartridge the choice where the differential pressure across a loaded element is a design case rather than an incident, and it is also why the rated layer keeps its bubble point after cleaning.
It is also what makes the element cleanable. Because the wall is rigid and the contaminant is held at and near the rated layer rather than through a deep fiber mat, reverse flow lifts it off and the cartridge goes back into service. Lines that backwash on a schedule specify this element for that reason: the running cost is cleaning cycles rather than a stock of replacements.
About 70% of our orders arrive as replacements, against a drawing or an OEM part number; the rest start from operating conditions and our engineers select the layer stack and issue a dimensioned drawing for approval. Forming — rolling, discing, flanging — and welding by TIG, resistance or laser all happen in our plant. Every batch is measured for bubble point and air permeability, and the record travels with the dispatch. Drawing review takes 3–5 working days; samples ship in 20–30 days and production runs take 30–60 days, from a minimum of a few pieces to a few dozen elements.