Armoured PTFE Bellows
Armoured FluoroFlow FFAB PTFE Bellows are manufactured from virgin HiPerFlon® PTFE and combined with a multi-layered austenitic stainless steel or Hastelloy shell to provide high pressure performance outside the range of conventional PTFE bellows. This range is designed to the EJMA international standard.
The manufacturing technique is such that the PTFE and the steel shell are convoluted simultaneously to provide a uniform PTFE wall thickness throughout the product.
These bellows are typically supplied without tie rods but they can be provided upon request. The high pressure rating of up to 25 Bar g allows these bellows to be supplied with ASME B16.5 Class 300 or DIN PN40 flanges. Even at 200° C the bellows can be used at 19 Bar g!
The standard size range is 1.1/2” (DN40) up to 20” (DN500)