PTFE expansion joints
Expansion joints with pure PTFE bellows for highly aggressive chemicals and high temperatures. Used where rubber cannot withstand the medium — acids, alkalis, solvents and temperatures up to 260 °C.
For installation selection, call: +48 68 458 55 70
// APPLICATIONS
Where it works
Expansion joints with pure PTFE bellows for highly aggressive chemicals and high temperatures. Used where rubber cannot withstand the medium — acids, alkalis, solvents and temperatures up to 260 °C.
Selection for your system
The configuration is selected for the medium, pressure, temperature and installation arrangement. Our engineering team confirms the choice after reviewing the full operating data; non-standard designs are engineered to order and validated using FEA/CAE.
Chemical industry
Acid and alkali systems
Petrochemicals
Aggressive media and solvents
Electroplating plants
Pickling baths and etching media
Pharmaceuticals
High-purity processes
Specifications
| Nominal diameters | DN25 – DN600 |
|---|---|
| Nominal pressure | PN6 / PN10 / PN16 |
| Operating temperature | -50 °C … +260 °C |
| Bellows material | PTFE (politetrafluoroetylen) |
| Number of arches | 1 – 5 (depending on movement) |
| Flanges | Carbon or stainless steel, loose rotating |
| Resistance | Acids, alkalis, solvents and oxidisers |
| Connection | Flanged to EN 1092-1 |
Available configurations
| Medium | Configuration | Max. temp. | Arches |
|---|---|---|---|
| Inorganic acids | PTFE | 200 °C | 1–2 |
| Alkalis, bases | PTFE | 220 °C | 2–3 |
| Hot media | PTFE | 260 °C | 3–5 |
| Mixed media / vibration | Rubber-PTFE | 150 °C | 2–3 |
// Indicative table. The final configuration is confirmed by our engineering team.
// DESIGN
Design features
Broad chemical resistance
PTFE is chemically inert to almost all industrial media.
High-temperature capability
Continuous operation up to 260 °C without loss of bellows performance.
Multi-arch designs
Greater movement absorption while retaining chemical resistance.
You may also like
Rubber expansion joints
Accommodate thermal expansion, vibration and pipeline movement.
- Diameters DN32–DN3000
- Pressure PN6–PN25
- Temp. up to 130 °C
- Material EPDM / NBR / IIR
Pinch valves and sleeves
Control and isolation of abrasive media with a replaceable rubber sleeve.
- Diameters DN15–DN300
- Sleeve NR / EPDM / NBR
- Medium abrasive
Knife gate valves
Reliable isolation of contaminated media, sludge and abrasive slurries.
- Diameters DN50–DN1000
- Pressure PN10
- Medium contaminated
Need a solution selected for your installation?
Provide the medium, diameter, pressure and temperature. An engineer will prepare a selection and quotation with no obligation.