When a backplate is used with a single cylinder, a single tank adapter, or STA, is usually employed. The STA is a small metal structure that bolts on to the backplate on the outside of the wings, contains two camstraps, and accommodates the cylinder.
In some instances, the STA may be omitted, and the camstraps threaded through the wing and backplate. In these cases, the wing will contain a built-in STA in the form of two rods or pads which stabilise the cylinder or the backplate may be manufactured with a slight channel in the central ridge which allows the single cylinder to locate.
Twin cylinders are usually attached to the backplate via bolts, passing through the cylinder bands, and secured by nuts within the central channel of the plate. An alternative is to use two sets of camstraps and extra slots in the backplate and wing. This arrangement will allow the convenient attachment of independent cylinders of almost any size without the use of cylinder bands.
Some rebreather divers fit backplates to their rebreathers. The exact method of attachment varies between users and rebreather models, and may include modification to the rebreather or the use of a customised backplate. Some rebreathers are designed specifically for use with backplates.
Famous quotes containing the words attachment and/or cylinder:
“Men are more evanescent than pictures, yet one sorrows for lost friends, and pictures are my friends. I have none others. I am never long enough with men to attach myself to them; and whatever feelings of attachment I have are to material things.”
—John Ruskin (18191900)
“The outline of the city became frantic in its effort to explain something that defied meaning. Power seemed to have outgrown its servitude and to have asserted its freedom. The cylinder had exploded, and thrown great masses of stone and steam against the sky.”
—Henry Brooks Adams (18381918)