In pipeline installations that are exposed to the weather, problems hampering effective maintenance are most often caused by flange connections. This is because the gaps between the flanges present maintenance problems. Layers of rust tend to build up and eventually weaken the bolts or stud bolts. Moreover, underlying constructions also frequently suffer from wear by rusty water, leaking from flange connections..
To fit flanges with a protector, e.g. type "A". This consists of the "Armaflex" elastomer with a water vapour diffusion resistance factor exceeding 5000. This interior jacket is nonflammable and has the M1-MF (ANFOR) certificate. The outer casing is made of stainless steel. The unit is provided with either a hole for leakage detection of a coupling, to which a stainless steel tube, etc. can be connected.
