The scuba equipment manufacturer A.P.Diving or Ambient Pressure Diving, formerly known as A.P.Valves, is at Water-Ma-Trout in Helston in Cornwall in England. They make a variety of scuba gear including buoyancy compensator jackets and the Inspiration diving rebreather. The firm started in 1969 making a valve to attach to a stabiliser jacket buoyancy compensator to allow the diver to breathe from the stab jacket's inflation cylinder. They progressed to making divers' adjustable buoyancy life-jackets and stabiliser jackets, and then making, or dealing in, other sorts of diving gear such as rebreathers (from year 2001) and diving accessories etc. They often exhibit at diving trade shows. Product lines *"Inspiration" rebreathers *"Buddy" and Commando" - recreational and military scuba buoyancy compensators. *"Mk IV Jump Jacket" - a buoyancy compensator designed for use with surface supplied diving equipment.
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