Dorr-Oliver disc and drum filters have been a fixture of mining, chemical, and wastewater plants worldwide for decades. Since the brand is now part of FLSmidth, many operators rely on independent aftermarket manufacturers for replacement filter cloths. R+F FilterElements manufactures compatible filter media for Dorr-Oliver rotary vacuum disc filters and drum filters — cut to your sector or drum geometry, supplied ready for installation.
🔑 Key Takeaways
- R+F FilterElements manufactures compatible replacement cloths for Dorr-Oliver rotary vacuum disc filters and drum filters.
- Sector panels are cut to exact geometry — including snap-ring, caulking-rope, and sewn-in attachment formats.
- Drum filter covers are available as full-width wraps or segmented panels, depending on the drum design.
- Materials include monofilament and multifilament PET and PP, as well as PA for specific chemical duties.
🏭 Dorr-Oliver Disc Filters — What Operators Need to Know
Dorr-Oliver vacuum disc filters were designed for high-capacity dewatering in mining and mineral processing. Many of these installations have been in service for 20 years or more, which means original spare-parts support has become limited. When the cloth reaches the end of its life, operators need a replacement that matches the sector geometry, attachment method, and process requirements exactly.
R+F FilterElements supplies compatible sector cloths for Dorr-Oliver disc filters in monofilament PET and PP weaves. We manufacture to your existing sector dimensions — including all common snap-ring and caulking-rope formats. If you have a drawing or an old cloth as a template, we can replicate the geometry.
🔧 Dorr-Oliver Drum Filters — Replacement Covers
Dorr-Oliver rotary vacuum drum filters use a continuous cloth wrap or segmented panels across the drum surface. Over time, the cloth loses permeability, develops localised wear, or simply ages beyond repair. Replacing the drum cover requires a fabric that matches the drum diameter, width, and grid-support geometry.
We supply drum filter covers in the same polymer and weave families used on the original equipment. Whether your Dorr-Oliver drum filter uses a belt-discharge, scraper-discharge, or string-discharge configuration, the cloth specification is tailored to the application.
| Equipment type | R+F product | Typical materials | Attachment |
|---|---|---|---|
| Vacuum disc filter | RF-RD Series sector cloths | Monofilament PET, PP | Snap ring, caulking rope, sewn |
| Rotary vacuum drum filter | RF-BF Series drum covers | Monofilament/multifilament PET, PP, PA | Lacing, clamping bar, sewn wrap |
📊 Why Operators Choose Aftermarket Cloths
With Dorr-Oliver now integrated into FLSmidth, original replacement cloths may involve long lead times, minimum quantities, or premium pricing. An independent manufacturer like R+F FilterElements can often deliver faster, at a competitive price, with the same or better fabric performance — because we focus exclusively on filter media.
💡 Tip: If you are unsure which weave specification suits your slurry best, use our online tool to configure your disc filter cloth online and receive a pre-filled, non-binding specification and inquiry.
Dorr-Oliver model, disc/drum diameter, number of sectors or drum width.
Drawing, old cloth, or photos with a tape measure for reference.
We confirm geometry, material, and delivery time — typically within 48 hours.
Cloths arrive ready for installation — no trimming or rework needed on site.
R+F FilterElements GmbH is an independent manufacturer of filter fabrics and filter elements. Dorr-Oliver and FLSmidth are trademarks of their respective owners. We are not affiliated with, endorsed by, or authorised by FLSmidth or any successor entity. Product names are used solely to describe compatibility.
📩 Need Help Choosing the Right Fabric?
Our technical team at R+F FilterElements can help you find the perfect filter fabric for your specific application. Get in touch for a free consultation — we will recommend the right solution based on your machine, process, and operating conditions.
Ready to move forward? You can also configure your rotary disc filter fabric online to generate a pre-filled, non-binding specification and inquiry in just a few steps.