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Buoyancy Compensators
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To make the correct choice an assumption must also be made here. We are sure that there is no longer any doubt as to what is best: the older "twin-bag" design, i.e. an internal air chamber and an external sewn protective chamber, or the "single-bag" design, i.e. a fabric support, usually in very strong 840 dn Nylon and/or 700/1000 dn Cordura, coated in a thick layer of polyurethane then sealed using the radio-frequency technique and seamed. The latter is both lighter and smaller both in the water and out.
The choice is limited to two technical features:
- Surrounding air volume single-bag design.
- Rear air volume single-bag design.
The surrounding air volume buoyancy compensator, undoubtedly the favourite of amateur divers is suggested for use with single air tanks. It has the advantage that the air volume is attached to the diver around the waist thus assisting vertical set-up under all conditions.
The rear air volume buoyancy compensator also known as "technical" and/or "all at the back" was specifically designed to compensate for negative thrust caused by heavy twin or triple sets of air tanks when the entire weight is supported on the diver's back.
As manufacturers of buoyancy compensators we are able to offer a further choice depending on intended use:
- a buoyancy compensator with a rigid back support secured with stainless steel screws and bolts, a tank holder strap with quick-adjustment buckle.
- a buoyancy compensator with a lower back support, two tank holder straps with quick-adjustment buckles, lighter and smaller.
The excess pressure valve is automatic at 0.18 bar and manual, similar to the type made in the USA with a small stainless steel pipe.
The "rapid exhaust" system is fitted in the upper exhaust valve. This is easy to use and located to the left of the compensator. The large delivery and exhaust buttons are easy to use even with large neoprene gloves.
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