Vacuum Filter Fabric (Vacuum Filter Belt)
Vacuum filter fabrics for vacuum belt filters and vacuum disc filters in power plant FGD, phosphoric acid and mining filtration. Seamless or seamed, custom sizes.
Vacuum filter fabrics engineered for vacuum belt filters and vacuum disc filters in demanding dewatering duties.
Choose by duty — the five model families
623A mining precision (all-monofilament plied weft), 623 the FGD upgrade (mono surface, scraper-resistant), 617 the economical low-permeability FGD workhorse, 620 the most versatile calendered double layer for chemicals, 610 satin weave for phosphoric acid. Measured air permeability for every model is in the factory test table below.
FGD gypsum: 617 or 623?
Start with 617 when budget leads or the filter has tight clearances; upgrade to 623 when cake release and scraper wear drive your cloth costs — 623 runs longer campaigns and holds filtrate clarity at higher loads.
| Model | Yarn | Warp/Weft dens. (/cm) | Weave | Air perm. (CFM) | Thickness (mm) | Weight (g/m²) | Tensile (N/cm) |
|---|---|---|---|---|---|---|---|
| 610D | PET 0.33 / 0.5 blue | 40 / 11.5 | 5/1 satin | 205–218 | 1.16 | 870 | 1604 |
| 620 | PET 0.2+0.35 / 0.23+0.32 | 52+13 / 27 | 3/1 + 2/2 | 306–640 | 1.43 | 796 | 1231 |
| 620A | PET 0.2+0.35 / 0.4+600D | 52+13 / 27 | 3/1 + 2/2 | 50–54 | 1.27 | 776 | 1099 |
| 623A | PET 0.48 orange / 0.5 white | 27.5 / 18.5 | 6/2 satin | 100–150 | 1.83 | 1448 | 1543 |
| 3356 | PET 0.35 / 0.5 blue | 27 / 12 | 5/1 satin | 292 | 1.1 | 816 | 1159 |
| 008MD | PP — 8 µm rating | 192 / 54 | Double layer | 13–20 | 0.85 | 560 | 5500 |
| 030MD | PP — 30 µm rating | 192 / 54 | Double layer | 38–43 | 0.9 | 560 | 5500 |
| 120D | PP — 120 µm rating | 140 / 57 | Plain | 333–366 | 1.18 | 510 | 5000 |
Applications
- Power plant FGD gypsum dewatering on vacuum belt filters
- Phosphoric acid and chemical process filtration
- Mining plant filtration — concentrates and tailings on vacuum disc / drum filters
Specifications
Frequently Asked Questions
617 or 623 for FGD gypsum — which should I choose?
617 is the economical FGD workhorse: a multifilament weft gives low permeability (33–41 CFM) for gypsum and fly-ash slurries. 623 upgrades it — 100% monofilament surface with the multifilament hidden on the back — for better cake release, better scraper-wear resistance and longer life; the trade-off is a thicker fabric that a few close-clearance filters won't take. We help you compare on total cost per tonne.
Do you supply fabrics for vacuum disc filters?
Yes — we cut and seam vacuum filter fabrics to fit disc filter sectors, and drum filter panels, in custom sizes for every model.
Can vacuum filter belts be made endless?
Yes. Horizontal vacuum belt filter fabrics can be supplied endless or with pin/spiral seams, with sealed or reinforced edges.
How do I match cloth to my cake?
Fine cakes need tighter weaves for clear filtrate; coarse, free-draining cakes reward open monofilament weaves for capacity. We select weave and CFM from your particle size and loading.
Do you supply to common OEM filter brands?
Yes — our fabrics are dimensioned to fit the common horizontal belt, disc and drum filter platforms; tell us the machine model and we cut to it.
Related Products
Request a quote for vacuum filter fabric
Custom sizes, seams and materials — OEM/ODM available.
Tell us about your filtration duty
Send your machine model, slurry/product type, and operating conditions — our engineers will recommend the optimal weave and quote within 24 hours.