Apeks Tek 3 Regulator SetApeks has developed unique first stages specifically for use on a twinset regulator set. The benefits of this system are: minimized risk of accidental snagging, no hose kinking and easier access to the manifold valves. Each first stage has three medium pressure ports and one high pressure port. They are over balanced, cold water compatible and extremely robust. Tek3 looks great too. Not only is the Tek 3 suitable for twinset use but it is equally