dwg AVX-1803 · Products
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A wedge wire screen consists of triangular profile wire welded onto support rods. The flat top faces form continuous slots. The wire narrows below the surface so each slot widens downstream. This limits particles lodging after they pass the opening. Correct flow orientation and cleaning suited to the application remain necessary.
Also known as: profile wire screen · V-wire screen · continuous slot screen · slotted screen panel · sieve bend screen · wedge wire panel
Particles can lodge in the openings of perforated plate or woven cloth. This reduces capacity and increases differential pressure. With wedge wire, the surface opening is the narrowest point. The slot widens below it so passing particles are less likely to remain trapped.
We supply wedge wire screens as flat panels and curved sieve bends. Cylinders, baskets and conical sections are also available. Slots can run across or along the flow. State the required slot width, medium and current open area. Include how the screen is supported or clamped. We work to your drawing or prepare one with you.
Set slot direction and support rod pitch before production. Transverse slots support separation in a sieve bend. Slots along the flow are used for lower-resistance drainage and dewatering. Wider rod spacing provides more open area but less support. Closer spacing adds support and reduces open area. The frame, edge bars and mounting are designed accordingly.
| Property | Value |
|---|---|
| 0.05–15 mm (standard range); the fine end is profile-dependent and confirmed per application | |
| 1.0–3.7 mm × 1.8–6.3 mm (common profiles; others on request) | |
| typically 10–75 mm, set by load and span | |
| = slot ÷ (slot + profile width); ≈ 1 % to over 80 % across the ranges above | |
| across or along the flow; slot widens downstream | |
| commonly up to approx. 1,500 × 6,000 mm; larger surfaces built up from panels | |
| commonly approx. 50–1,200 mm; larger diameters in segmented sections | |
| flat panels, curved sieve bends, cylinders, baskets, conical sections | |
| 304, 316L, Duplex; higher alloys on request |
Values shown are standard industry ranges for wedge wire screens. They are not a commitment. Slot width, profile size and rod pitch are confirmed per application after technical review of the process and mounting. The same applies to open area, form and alloy.
Mesh count from woven cloth cannot be converted directly into slot width. A fibre or flake may pass edge-on through a slot that a square aperture of the same width would retain. State the smallest particle you must retain and the largest you can pass. Include a particle size distribution where available.
In sieve bends, transverse slot edges help separate material from the stream. Slots along the flow provide lower resistance for drainage. Screens can be flat, curved, cylindrical or conical. Describe how the medium reaches the surface as well as the shape of the existing part.
Support rod pitch affects open area and stiffness. Insufficient support can cause deflection under a raking arm, pressure differential or other mechanical load. State span, mounting and differential pressure. Include any mechanical contact with the surface.
304 is used for benign duty and 316L for many process-water and food applications. Chlorides, seawater and acidic or hot media may require Duplex or a higher alloy. Material selection is assessed against medium, concentration and design temperature.
Standard in 304 and 316L. Also supplied in Duplex and, for chloride, sour or high-temperature duty, in higher alloys such as 904L, Inconel and Hastelloy. Frames, edge bars and support rods are matched to the screen alloy unless the specification says otherwise. Availability and lead time for the higher alloys are confirmed at quotation.
The slot is narrowest at the surface and widens below it. Particles that pass the opening can therefore flow through more easily than through a straight-sided hole. Sticky, fibrous or greasy material may still cause blinding and needs cleaning.
Start with the required separation: the smallest particle to retain and the largest that may pass. Consider shape as well. Fibres and flakes can pass edge-on through a slot. A sieve analysis helps with selection. Photographs can also be useful.
Sieve bends generally use slots across the flow to separate material. Slots along the flow are also used for drainage, dewatering and static retention. With a raking or brushing arm, coordinate slot direction and sweep direction so the arm stays on the wire tops.
Yes. State chord and arc, or radius and included angle. Add slot width and the clamping arrangements at the top and bottom. Take the intended slot width from the original drawing where possible. A worn screen may have wider slots than originally specified.
Geometric open area follows slot ÷ (slot + profile width). A 0.5 mm slot on a 3.0 mm profile gives about 14 %. A 3 mm slot on the same profile gives 50 %. A wide dewatering slot on a slim profile may exceed 80 %. Final open area also relates to the required support and strength. Send slot width and loading for assessment.
304 is an option for benign duty and 316L for many process-water and food applications. Chlorides, seawater, sour gas or higher temperatures may require Duplex or higher alloys. Include medium, concentration and design temperature for an informed choice.
We supply flat panels, cylinders, baskets and conical sections. Cylindrical slots can run around the cylinder or along it. Support rods may be inside or outside depending on the required smooth face. State whether flow is in-to-out or out-to-in. The slot must widen in the correct flow direction to limit particle trapping.
Include slot width, dimensions and form. Add the arc for a sieve bend. State flow direction, medium and design temperature. Describe the support or clamping arrangement. A frame sketch or existing drawing helps assessment. Availability and lead time are confirmed at quotation.
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