PTFE Bellows
Flanges, Inserts & Adaptors
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Full technical data and dimensions
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Vacuum Bellow Flange
LSVBF series, DN 80 to DN 300
Flange for the vacuum bellow range — supplied undrilled, or drilled to BS 10 Table E, Table F or ASA 150, DN 80 to DN 300.
| Product type | Vacuum bellow flange |
|---|---|
| Nominal bore range | DN 80 to DN 300 |
| Length | 70 mm across the range |
| Flange drilling | Undrilled; BS 10 Table E (/E), BS 10 Table F (/F) or ASA 150 (/A) |
| Used with | LSVB vacuum bellow range |
| Catalogue reference | LSVBF series |
Product overview
What it does, and where it fits.
The vacuum bellow flange is the flange supplied with the LSVB vacuum bellow range. It covers DN 80 to DN 300 — the same span as the vacuum bellow, since below 80 DN a line bellow and its flange are used instead.
Each size is listed four ways: an undrilled reference, and three drilled references corresponding to BS 10 Table E, BS 10 Table F and ASA 150. Specify the standard your mating flange works to and the reference takes the matching /E, /F or /A suffix.
Face-to-face is 70 mm across the whole range, matching the vacuum bellow it is supplied with.
Features
Built into every unit.
- Supplied undrilled, or drilled to Table E, Table F or ASA 150
- DN 80 to DN 300 in five catalogue references
- 70 mm length across the whole range
- Matched to the LSVB vacuum bellow range
Benefits
Why it earns its place in the line.
- One reference family covers four drilling options
- Undrilled option lets the flange be matched to non-standard equipment
- Dimensionally matched to the vacuum bellow, so nothing has to be adapted on site
Applications & industries
Where it is specified.
Typical applications
- Terminating a vacuum bellow onto a glass vacuum line
- Vacuum distillation and solvent recovery plant at 80 DN and above
- Assembling large-bore glass headers under vacuum
Industries served
- Chemical processing
- Pharmaceutical
- Fine chemicals & dyes
- Distillation & solvent recovery
- Water & effluent treatment
- Agrochemicals
- Research & pilot plant
Technical data
Specification for Vacuum Bellow Flange.
Figures below are for this product only — every item in the range carries its own dimension table.
| Product type | Vacuum bellow flange |
|---|---|
| Nominal bore range | DN 80 to DN 300 |
| Length | 70 mm across the range |
| Flange drilling | Undrilled; BS 10 Table E (/E), BS 10 Table F (/F) or ASA 150 (/A) |
| Used with | LSVB vacuum bellow range |
| Catalogue reference | LSVBF series |
| Cat. Ref. (undrilled) | Table E | Table F | ASA 150 | DN | D | L |
|---|---|---|---|---|---|---|
| LSVBF 3 | LSVBF3/E | LSVBF3/F | LSVBF3/A | 80 | 200 | 70 |
| LSVBF 4 | LSVBF4/E | LSVBF4/F | LSVBF4/A | 100 | 220 | 70 |
| LSVBF 6 | LSVBF6/E | LSVBF6/F | LSVBF6/A | 150 | 285 | 70 |
| LSVBF 9 | LSVBF9/E | LSVBF9/F | LSVBF9/A | 225 | 395 | 70 |
| LSVBF 12 | LSVBF12/E | LSVBF12/F | LSVBF12/A | 300 | 445 | 70 |
All dimensions in mm, transcribed exactly from the catalogue page.
FAQ
Questions we are asked about this item.
Because the vacuum bellow does. Up to 50 DN a line bellow is used for vacuum applications, so it takes the standard bellow flange instead.
Whichever your mating flange works to — BS 10 Table E, BS 10 Table F or ASA 150. If the mating equipment is non-standard, order it undrilled and drill to match.
Related products
Commonly specified alongside Vacuum Bellow Flange.
Enquiry
Tell us your line size — we'll confirm the spec.
Send the bore, the media, the temperature and pressure, and the flange standard you work to. Drawings and custom sizes welcome.
Not sure which spec fits your process?
Send your requirement — media, temperature, pressure, dimensions — and we'll recommend the right product or fabricate it.
Talk to an engineer