Configuration

In a pony canteen arrangement the aback regulator is a complete diving regulator (first and additional stages, and generally a submersible burden gauge) on a abstracted butt which is not advised for use as primary breath gas during the dive. It provides a absolutely bombastic emergency air supply. The admeasurement of the pony canteen butt is usually abate than that of the primary scuba cylinder. It should about accommodate abundant breath gas to accomplish a absolutely controlled acknowledgment to the surface, including any appropriate decompression stop or assurance stop appropriate forth the way. The appropriate pony butt accommodation will depend on the contour for safe ascendance to the apparent appropriate for a accurate dive plan. A pony canteen acclimated for action diving may be 6, 13 or 19 cu ft in the USA, while 2 litre and 3 litre are accepted sizes in Europe. For abysmal or abysmal abstruse diving or bones diving 30 and 40 cu ft (5 litre and 7 litre) cylinders are generally used. The pony canteen is a minimum claim for anyone accomplishing abandoned diving, who has no another antecedent of air in the anatomy of a buddy's accessible catchbasin and octopus regulator1 if the dive is to a abyss area the diver is not able to do a safe chargeless ascent. In accurate diving operations, pony bottles can a accepted allotment of tethered scuba diving operations area the diver is generally abandoned but affiliated to the apparent by communications equipment.2 Several scuba manufacturers aswell accept produced a minimalist haversack accouter that accurately supports a aback army pony canteen alone for use by a able scuba diver in bank baptize diving or for baiter aliment purposes