Bag housings that open
in twenty seconds.
The BF quick-open multi-bag range — two to twelve bags, 72 to 288 m³/h, in 304 or 316L. Interlocked so the cover cannot open under pressure.
Twenty seconds, one person, no spanners
Most bag housings are a ring of bolts. Someone walks around the vessel undoing them, lifts a heavy cover off, changes bags, then walks around again doing them up — unevenly, which is how seals fail. The BF range replaces that with a V-shape clamp and a handwheel.
Unlock, rotate the wheel, open. Twenty seconds from one standing position — no walking around the vessel, no bolts to tension evenly.
The cover cannot be opened until the vessel has been vented and the pressure relieved. A safety interlock, not a procedure someone has to remember.
The cover opens vertically and stops at any angle under one finger. No overhead lifting gear and no side clearance for a swinging cover.
Six sizes, one cover mechanism
Every housing takes the same Size 2 bag (φ180 × 810 mm), so one consumable covers your whole site no matter which size sits on which line. Size 1 bags can be accommodated where the duty suits; Size 2 is our pick and what the range is built around, and the four-bag Size 2 is the one we supply most.
BF-2
Filter area 1.0 m² standard, 2.0 m² with high-area bags. DN80 / DN100 connections.
BF-3
Filter area 1.5 m² standard, 3.0 m² with high-area bags. DN100 / DN125 connections.
BF-4 Our pick
Filter area 2.0 m² standard, 4.0 m² with high-area bags. DN100 / DN125 connections.
BF-6
Filter area 3.0 m² standard, 6.0 m² with high-area bags. DN125 / DN150 connections.
BF-8
Filter area 4.0 m² standard, 8.0 m² with high-area bags. DN150 / DN200 connections.
BF-12
Filter area 6.0 m² standard, 12.0 m² with high-area bags. DN200 / DN250 connections.
The whole range on one table
| Model | BF-2 | BF-3 | BF-4 | BF-6 | BF-8 | BF-12 |
|---|---|---|---|---|---|---|
| Design pressure (MPa) | 1.0 | 1.0 | 1.0 | 1.0 | 0.7 | 0.7 |
| Flow rate (m³/h) | 72 | 72 | 96 | 144 | 192 | 288 |
| Filter bags | 2 | 3 | 4 | 6 | 8 | 12 |
| Filter area — standard (m²) | 1.0 | 1.5 | 2.0 | 3.0 | 4.0 | 6.0 |
| Filter area — high-area (m²) | 2.0 | 3.0 | 4.0 | 6.0 | 8.0 | 12.0 |
| Inlet / outlet | DN80 / DN100 | DN100 / DN125 | DN100 / DN125 | DN125 / DN150 | DN150 / DN200 | DN200 / DN250 |
| Approx. volume (L) | 125 | 190 | 224 | 324 | 446 | 674 |
Design temperature 0–250 °C, also limited by seal and bag material. Filtration 1–2000 micron. Housing 304 or 316L; legs, bolts and nuts stainless. Seals in NBR, EPDM, Viton, silicone, PTFE-encapsulated silicone or PTFE. Outside bead blasted; inside 120-mesh polish standard, food-grade optional. Connections flanged to HG20592-2009 (DIN), HG20615-2009 (ANSI) optional. Flow figures are for clean water at 10 micron — derate for viscosity, finer ratings and solids loading.
Housings are quoted to duty — vessel size, material, seal compound, internal finish, connections and any certification requirement all move the price. Give us the fluid and the flow and you get a firm number, plus the expected bag change interval so you can budget the consumable too. Request a quote →
This is what you are replacing
What are you filtering?
Flow rate, fluid, temperature, particle size and how often you want to change bags. We size the housing and the bag around that and quote the pair, delivered and commissioned.