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I can't believe this has gone on for so long. In general everyone is in agreement that the Instructor was wrong, but have we not all lost it with someone on some occasion? While it is never OK for a teacher to loose it with a student, we certainly don't know the provocation here. The OP has...

I think one has to be cautious about interpreting gas flow when evaluating regs. Most regs can deliver upwards of 600 l/min of gas flow. The minute volume of someone taking 60 x 3 liter breaths per minute is only 180 l/min (and this is physically impossible to do, hence the Navy testing...

Concerned diver: Diving is supposed to be a fun, exciting activity. I think too many people are out there posing and judging others, trying to feel superior. The most judgemental diver I was with, had a fight with his buddy and refused to do any more dives with him. Needless to say I was landed...

I have thought about this, and have come to the following conclusions. 1. Between the lightest and the heaviest reg there will be a maximum of 2 lbs difference in weight 2. Miflex L.P hoses are not appreciably lighter than standard. The only huge difference is on the high pressure hose in...

Elitism, snobbery, the board is full of it, mine's bigger than yours. Racist, biggoted you name it's here. So unless you stick in your comfort zone and train with the self professed better than everyone else instructor in your home town, your training is going to be inferior???? Get real, and...

Hotpuppy, just a different slant on this, I agree with most of what has been said. Being a safe experienced diver requires a certain attitude. Why did you choose the name hotpuppy? Just maybe there was a "personality clash", that started in the classroom, progressed through the 1st and then...

You spoilt brat!! Dived the Maldives some 15 years ago, and nothing I have dived since has compared. 28 - 29 degree celsius water (in February), crystal clear visibility 50+ meters, pristine coral, millions of fish. Please get trained before you waist this magnificent place doing OW course!! or...

Thanks LeadTurn I change the second stages over so I've kept that as a constant only the first is on trial. My VX10 is around 15 years old and has served me well, as you say I think it is truly a top end reg, but recently I thought I'd get the latest top of the range reg by the same...

Thanks for the info Leadturn. The one that has the low pressure drop is a Beuchat VX10, the one with the huge drop is the Beuchat VR200. Recovery speed is brisk and locked onto 130 psi, no creep. On initiating a breath the needle flicks down about about 18 psi and stabilises at around -12-15psi...

zung, as I said it has been service in the last week, by reputable shop. No crud anywhere, was the same pre and post service, and in fact when brand new.

Is there a way to stop an excessive IP fall (25psi) on purging, or is it inherent in the design of the reg. I have 2 balanced diaphragm regs (different models from the same manufacturer) on 1 there is hardly any drop <5 psi on full purge, while on the other there is this excessive drop, which...

I have been a fan of the octo-inflator since my 10th dive (when I bought my own gear). I loved the lack of clutter the extra hose and octo cause. But have recently changed to a conventional set up, and bought 4 new Octo's for my regs. Why? 1. Every time I travel, I need to take my BC as well...

awap, I'm not sure if it is the 5-xxx that makes the difference, but here is a reference that confirms the "Sub-Aqua" sizing. British Standard Size O-rings Seals NBR Rubber BS606-BS688 from Polymax. The local bearing shop new exactly what I was talking about, but only had N70's in stock, hence...

I have had a similar problem with a Scubapro DIN insert in my tanks. None of the usual BS 111 or 112, etc seem to fit correctly. I think I have found the solution, Beuchat list their DIN fitting as requiring an 11.92 x 2.62mm N90 o-ring. Now this is a BS-614, and is just between the BS-111...

Thanks for that, I have the 2006 manual, that doesn't show that step. I wonder if the design has changed? It makes sense now. The only other thing I was concerned about is that there is no mention of the little white teflon backup ring in the HP Assembly, are you not supposed to change this even...

Attached is a photo of the "crown" next to the body of the first stage. Just wondering why removal was not shown in the manual? thanks

Thanks for the reply, I think my terminology is wrong. I believe it is the "crown in Aqualung speak or the HP seat in Beuchat speak" that is held in the 1st stage by an 012 o-ring that the "HP seat in DiveRite speak" seals against. In your excellent photographic service manual you don't mention...

I was reading the service manual, and noted that removing the HP valve seat is not mentioned. Is this a purposeful omission? I suspect cleaning solvents could damage the 0-ring, and it might be difficult to dry behind the seat. Also is it normal for IP to drop by 15 -20 psi during a purge...

As I understand it all regulators, tanks and nitrile o-rings are good for 40% nitrox. All tanks are good for 40% oxygen if filled by a membrane system. Tanks have to be specially oxygen cleaned only if the partial fill method of blending nitrox is used (the most common way), because they are...

JonKranhouse, With respect, I am sorry I have touched a nerve, I notice you would be the first supporter of any conspiracy theory. I don't want to get into a slinging match, but I firmly believe that he who shouts loudest, or uses the most bold print, or red print for that matter is not...