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The BV2 lead weights are designed to be used in conjunction with the underwater housings. These weights can be used to trim the housing to be neutral at a depth predetermined by the diver.
- Can either be inserted in the lead-belt included in some housings or strapped to the lead-belts fitted under some units
- For longer life to housing, do not hang lead to housings when they are not in the water. This will cause unnecessary extra wear to the housing an decrease its life expectancy. Clip the weights on as the housings reach water level
That the flexible housing behaves just like the organs of a diver with regards to water pressure. As stated by the law of physics of Boyle-Mariotte (pressure x volume = constant) the volume of air in the housing (just as that in the lungs, diving jacket and the air inclusions in the diving suit) decreases as it descends. In other words, a housing that is positively buoyant on the surface will be neutral at a certain depth and thereafter even show a tendency to sink. This point can be "adjusted" by adding weights to the housing, the amount of air included in the housing and some practice.