BELLOWS
PTFE bellows are used as balancing
elements between engineering parts. They are machined parts. Due to the
different geometries of the folds highly flexible or pressure- resistant
versions can be designed and manufactured.
PTFE’s outstanding material properties
allow bellows to be used increasingly in medical, food and general industrial
applications.
- Nearly universal chemical resistance
- FDA-conforming materials for food and pharmaceutical products
- Very good suitability for sterilization
- Anti-adhesive
- Wide temperature range from –60°C to +200°C
- Cost effective series production from in-house production of semi-finished goods to the final product
- High reverse bending strength
- Good dimensional stability
- Low tooling costs
- Freedom of design
Pointed, Non-cut Folds
for maximum expansion and low pressures upto 3 bar.
Round, Machined Folds
for imporved cleaning and maximum reverse bending strength. Low to medium pressures up to 6bar.
Solid, Machined Folds
for high pressures above 6 bar. Optimal with rectangular support on the rod or in the cylinder.
Bellows for a solenoid valve
in medical technology. High flexibility and frequency. Physiologically harmless. Resistant to aggressive cleaning agents.
Bellows for filling valves
Hermetical seperation of themedium from the actuation mechanism. The tip is the sealing cone of the valve.
Multi-functional bellows
Seperation of two areas with moving parts. Integration of sealing and guiding elements. Connections can be performed according to customer specifications.
- As compensation for expansion in pipe systems
- For shielding sterile areas
- For filling systems
- With aseptic valves
- With solenoid valves
- With metering devices
- With pumps and valves
- Typically, unfilled PTFE with FDA approval
- Modified PTFE with higher reverse bending strength
- Special versions with electrical conductivity
- With applications as metering, shut-off and sealing element the clamping flange, the sealing cone or the slide ring may be manufactured from a PTFE compound (e.g. glass fibres or ceramics)