Back plate made of 3mm thick stainless metal plate. All edges are thoroughly rounded, surface is chemically polished. Back plate’s profile in combination with BS centering enables up to 9kg V shape weight to be placed into space between plate and tank.
Securing of one tank, possibly an scrubber of rebreather without using secondary “mono” adapter.
For mounting of two tanks we use common way of tightening onto centering screws by MZD.