PTFE expansion joints for low pressures

FF.GI Srl produces a wide range of expansion joints for use at low pressures.
Designs vary according to the form, dimensions and end connection and the main materials used are:

- FLON-CHEM 1000 (virgin standard grade PTFE)
- FLON-CHEM 1121 (virgin premium grade PTFE)
- FLON-CHEM 1075 (modified premium grade PTFE)
- FLON-CHEM 1022 (antistatic PTFE)
- FLON-CHEM 1023 (modified antistatic PTFE)

CDA type


This kind of expansion joint is perfect for all those applications with very low pressure (max 1 atm) and a maximum temperature of 150°C.

The main features is the high flexibility that grants high excursions even with a small minimum length; in the scheme below you could see all the dimensions from DN 10 to DN 500; by the way these joints could be manufactured on customer purpose and with the formulas you could have the ideal expansion joint for your purpose and furnished with or without flanges.

CDB type


This kind of expansion joint is perfect for all those applications up to 5 atm of maximum pressure and up to 150°C of maximum temperature; its main feature, despite the CDA type, is the peculiarity to have an higher machine resistance while keeping a good flexibility.

In the scheme below are reported the standard dimension from DN10 to DN500, by the way these joints could be manufactured on customer purpose and with the formulas you could have the ideal expansion joint for your purpose and furnished with or without flanges.
FF.GI Srl have sophisticated equipment for the realization of pieces obtained by welding the virgin PTFE and modified PTFE. Thanks to this technology we could produce big dimension CDB type expansion joints.
Welding are made by our most experienced staff with unique machines; the quality of the welding is granted by a scintigraphy weapon that help us to control the homogeneity and integrity of the weld.