Baghouse filter bags
Polyester, acrylic, PPS, Nomex, P84, PTFE, fibreglass and anti-static needle felt. Round bags, snap-band or clamp collar, PTFE membrane on request.
Materials, sizes and selection →
Industrial filtration · Medical waste
Filter bags, diaphragms and incinerators — one supplier for the whole baghouse.
Ecoterva supplies needle-felt filter bags in eight fibre types, drop-in pulse valve diaphragms, and small medical waste incinerators from 10 to 500 kg/h. Tell us your gas temperature, dust chemistry and bag dimensions, and we will specify the right media instead of the cheapest one.
8filter media types in stock
10–500 kg/hincinerator capacity range
1–2 daystypical quotation turnaround
≤90%volume reduction, incineration
Three product lines, one engineering contact
Most baghouse problems are not one-part problems. A bag fails because the diaphragm leaks, or the incinerator runs wet and the media hydrolyses. Buying the bag and the valve part from the same supplier means somebody is responsible for the whole picture.
Pulse valve diaphragms
Drop-in replacements for Goyen, SBFEC, ASCO and Mecair pulse valves. NBR for standard duty, Viton for hot or acidic gas, EPDM for wet service.
Sizes and material options →Small medical waste incinerators
Two-chamber units from 10 to 500 kg/h for hospitals, clinics and regional treatment centres. Secondary chamber 1100–1200 °C, gas residence ≥2.0 s.
Models and process data →
Why buyers stay
We quote on data, not on guesswork
A filter bag is a chemical decision as much as a mechanical one. Two plants running the same 130 °C gas can need completely different media, because one is dry and the other is saturated with acid moisture.
So before we send a price, we ask four questions: gas temperature (continuous and peak), moisture and acid load, dust concentration and particle size, and the exact bag dimensions. If you send a photo of the old bag and its nameplate data, that is usually enough.
- Material recommendation with the reason it was chosen — including the limits
- Bag drawing confirmation before production, no silent substitutions
- Sample bags available before a full container order
- Same contact from quotation through production and shipment
What we need to quote a bag
| Dimensions | Diameter × length, or a photo with a tape measure |
| Gas temperature | Continuous and peak, °C |
| Chemistry | Moisture, SO₂, HCl, O₂ level |
| Dust load | Inlet g/m³ and typical particle size |
| Bag top | Snap band, clamp collar or rope cuff |
| Quantity | Pieces per year, or per replacement cycle |
Missing some of this? Send what you have and we will work from there.
Where our media runs
The same eight fibre types cover a lot of ground. These are the applications we quote most often.
Medical waste incineration
Acid gas plus moisture — usually PPS or PTFE with a PTFE membrane.
Coal & biomass boilers
PPS is the default above 150 °C; watch oxygen and sulphur.
Cement & mineral
Abrasive dust at moderate temperature — polyester or aramid.
Asphalt & foundry
Hot, dry and oily — aramid or P84, with oil repellent finish.
Technical notes from the shop floor
Short, practical answers to the questions buyers actually ask before ordering.
How long should a filter bag last in a medical waste incinerator?
Typical service life, the three failure modes that cut it short, and how to read a failed bag.
PPS vs PTFE vs fibreglass for incinerator flue gas
Temperature is the easy part. Oxygen, acid dew point and moisture decide which media survives.
Why pulse valve diaphragms fail early — and what to check first
Five causes, in the order worth investigating, plus how to pick NBR, Viton or EPDM.
Tell us what you are replacing
Send the old bag dimensions, a photo of the failed part, or the valve model number. We reply with a material recommendation and a price — usually within one working day.