Mist Collectors
Genuine Airflow Systems MistPak filters — MIST-PLUS main filters, aluminum mesh prefilters and DOP / HEPA after-filters — plus replacement cartridges for Donaldson Torit Dryflo mist collectors. Pick your machine to see the complete filter set it uses.
Send us the make and model of your dust collector, mist collector or air cleaner and we'll tell you which filters it takes, with price and availability. Or email info@rx4cleanair.com.
Mist collector filters for MistPak, VOM and Dryflo units
Oil mist and coolant mist from CNC machining, grinding, cold heading and EDM has to be caught at the machine, and the collector only works as well as the filters in it. Rx4CleanAir stocks the full filter set for every Airflow Systems MistPak collector: MP4, MP14, MP30, MP60, MP120, MPH5, MPH8, MPH10, PRO 1 and PRO 2, and for the 1200VOM and 2400VOM wet-application units. We also carry a replacement cartridge for the Donaldson Torit Dryflo MMA machine-mounted collector.
The Airflow Systems MIST-PLUS filters, mesh prefilters and after-filters here are the genuine OEM parts. In-stock orders placed by noon Central ship the same business day.
How the filter stack works
- Aluminum mesh prefilter. The first stage. Knocks the large droplets out of the airstream and drains them back; it protects the main filter from chips and heavy liquid.
- MIST-PLUS main filter. The coalescing stage: fiberglass media that merges fine mist into droplets that drain to the sump. MIST-PLUS is the 95% version; MIST-PLUS II is the 97% version of the same filter.
- After-filter. Optional on most MistPak models and used when the air returns to the shop or the process makes smoke: a DOP-grade box filter or a HEPA filter downstream of the main filter.
Which filter fits which machine
| Machine | Mesh prefilter | MIST-PLUS main filter | After-filter options |
|---|---|---|---|
| MistPak MP4 | 7FA8-0005 | 2AF7-3001 MIST-PLUS 95% | — |
| MistPak MP14, PRO 1 | 7FA8-0006 | 2AF7-4001 MIST-PLUS 95% or 2AF7-4000 MIST-PLUS II 97% | 7FJ9-5004 DOP (MP14); 7FJ9-5112 DOP and 7FJ9-9005 HEPA (PRO 1) |
| MistPak MP30, MP60, MP120, PRO 2 | 7FA8-0007 | 2AF7-5001 MIST-PLUS 95% or 2AF7-5002 MIST-PLUS II 97% | 7FJ9-5005 DOP, 7FJ9-5112 DOP, 7FJ9-9005 HEPA |
| MistPak MPH5 | — | 2AF8-4550 MIST-PLUS II (three per unit) | — |
| MistPak MPH10 | — | 2AF8-4900 MIST-PLUS II 97% (three per unit) | — |
| MistPak MPH8 | — | Uses one MIST-PLUS filter; ask us for the part number | — |
| 1200VOM | — | — | 7FP9-0312 box filter replacement |
| 2400VOM | 7FA8-0101; 24 x 24 x 4 pleated prefilter | 7FB9-0114 bag, 7FB9-0126 bag or the 7FB9-0126 95% replacement bag | 7FJ9-5112 DOP, 7FJ9-9113 HEPA |
| Donaldson Torit Dryflo MMA | — | P191241 / 3EA-39652-01 replacement cartridge | — |
The model is on the nameplate of the collector; if the filter in the machine is unmarked, the machine page above lists everything it takes. Quantity pricing is on each listing for shops that change several units at once.
Keeping a mist collector running
Pressure drop tells you when to change the main filter: when the gauge climbs past the collector's rated range, or mist shows up at the outlet, the coalescing media is saturated. The mesh prefilter is the cheap part of the stack and takes the abuse; keep it clean and the main filter lasts longer. After-filters are changed on pressure drop too, and a HEPA that has been wetted should be replaced, not dried.
Donaldson, Torit and Dryflo are trademarks of their respective owners and are used here for cross-reference only; Rx4CleanAir is not affiliated with them.
Frequently asked questions
- Which filter does my MistPak take?
- Find the model on the collector's nameplate (MP4, MP14, MP30, MP60, MP120, MPH5, MPH8, MPH10, PRO 1 or PRO 2), then use the table on this page or the machine's own page above. Each model has one mesh prefilter and one MIST-PLUS main filter size; the after-filter is optional and depends on how the unit was ordered. If you are not sure, send a photo of the nameplate through the chat button.
- What is the difference between MIST-PLUS and MIST-PLUS II?
- Same filter footprint, different efficiency: MIST-PLUS is rated 95% and MIST-PLUS II is rated 97%. Choose the II version for fine mist from high-pressure coolant, for smoke, or when the air returns to the shop and you want more capture before the after-filter. They are interchangeable on the models that list both.
- Are these genuine Airflow Systems filters?
- Yes. The MistPak filters here are genuine Airflow Systems parts. The Donaldson Torit Dryflo cartridge is a non-OEM replacement built to the original's dimensions and media.
- How often should mist collector filters be changed?
- Go by pressure drop, not the calendar. Clean the mesh prefilter on a regular schedule so it never loads up, and replace the MIST-PLUS main filter when the gauge no longer comes down or mist appears at the outlet. Heavy high-pressure-coolant work saturates a main filter faster than light machining; most shops land somewhere between six months and a year on the main filter.
- How fast do these ship?
- In-stock orders placed by noon Central ship the same business day. MIST-PLUS filters and prefilters go UPS Ground; larger orders go LTL freight. Both are quoted at checkout before you pay.