PTFE Bellows - Customized Design and Performance
PTFE bellows are used, for example, as compensating elements between engineered parts. By specifically using different fold geometries, any combination of properties can be achieved as required—for example, high flexibility or compressive strength.
The outstanding material properties of PTFE allow bellows to be used increasingly in the medical and food sectors, as well as in general industry.
PTFE Bellows Properties
- Almost universal chemical resistance
- FDA conformity for food and pharmaceutical products
- Highly suitable for sterilization
- Antiadhesive behavior
- Large temperature range of –60°C to +200°C
- Cost-effective series production from semifinished product to final product
- High reverse bending strength
- Good dimensional stability
- Low tooling costs
- Freedom of design
PTFE Bellows Application Areas
- As compensation for expansion in pipe systems
- For shielding sterile areas
- Filling lines
- Aseptic valves
- Solenoid valves
- Metering devices
- Pumps and valves, coating technology, steel mills, fitting industry
PTFE Bellow Types
Bellows for solenoid valves
For use in medical engineering. High flexibility and frequency.
Physiologically harmless. Resistant to aggressive cleaning agents.
Bellows for Filling Valves
Hermetic separation of the medium from the actuation mechanism. The tip is the sealing cone of the valve.
Separation of two areas with moving parts.
Integration of sealing and guiding elements.
Connections can be designed according to customer specifications.
Pointed, Non-cut Folds
For maximum expansion and low pressures up to 3 bar.
Round, Machined Folds
For improved cleaning and maximum reverse bending strength. Low to medium pressures up to 6 bar.
Solid, Machined Folds
For high pressures above 6 bar. Optimal with rectangular support on the rod or in the cylinder bore.