Milky wrote:But I am sure I will get use to it. On my old drysuit, whenever I need to dump the air out, all I need to do was lift my arm, so what about the dump valve on my shoulder? Should I try to make myself vertical or should I be in a standing right-up position? Secondly, is the dump valve automatically dumped any excess air if any? Is there any faster way of dumping the air on the valve such as pushing it rather than turning it?
I think Pete is down on the Lermontov for a few more days, so might not respond straight away.
All you need to do to vent air from the shoulder dump is move the valve to the highest position - I tend to do this by lifting my elbow, rolling slightly to the right and coming slightly out of trim. The more you roll or the more you come out of trim, the faster the air will come out. The knack is to let small amounts of air out regularly so you're not needing to let air out in big bursts. How the suit responds also depends on how much air you put in to it.
If you do ascend vertically, you don't really need to do anything - just keep your arm by your side and the valve is pretty close to being the highest point anyway. You've got two options to vent more air, firstly just lift the elbow a little. Secondly, you can raise your whole arm above your head, then squeeze it down against your side which will force air out the valve.
No matter how you're ascending, you can always cause the valve to vent by pushing it down.