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Pull off the exhaust tee, and use some pump-spray silicone to lube the exhaust valve, being careful not to kink it. We do this as a matter of course with our Spro regs, and it usually cures the exhale-burp sound syndrome. With many brands of regs, a fart or honk sound (sometimes even...

I've seen a lot of posts lately that say that Titanium Regulators shouldn't be used with enriched air. I'm fairly sure that isn't true. First of all, yes, Titanium is a Class 2, Group E combustible metal. What this means is that in dust concentrations, in air or enriched environments, a...

Your Viper Tec may be mal-adjusted, but it *is*a design flaw. Thankfully, not repeated in all the Dacor regs. There are many variables in designing second-stages, and they play against one another. Orifice/Seat size, lever length, balance, spring tension, turbulence flow, and diaphragm...

The titanium-nitrox thing is a bit of a myth. yes, given sufficient heat, a spark, and a pure o2 environment, titanium will combust. But so will marine brass and stainless steel. At considerably lower temperatures, in fact. So will copper, invar, and inconel. Use your Ti reg with nitrox...

Your reg needs to be rebuilt with Viton O-rings. Generally, Spro uses halocarbon (non-reactive) grease on their regs in manufacture (christolube, actually) but their regs are not "EANx Ready." The rebuild kit is about $50, and a good technician needs to do the rebuild, someone who...

'86 Toyota Van with 1,215,000 kms on it. Perfect height for tank donning, routinely carries 15 tanks and gear for 7 people. Great on gas, and way easier to get gear into than my monster FJ55 with 33" mudders (great for the dirt, terrible trying to lift the tanks higher than my nipples!!) For...

Victoria's just a hop and a skip from Seattle, and we have lots of dive sites really close to town. And all the way up the island. U$ go far here, too. Well worth the trip, methinks. C

chuckrt, Interesting, interesting.... we weren't really worrying about oxtox (either type) within our conservative and well-validated diving tables... rather, I was concerned about long (looooooooong) exposures at very shallow depths, which are pretty common for harvest divers up here...

All good points. But a "cheapo" octo may actually be quite a good reg. For instance, I knew one shop selling super-cheap octos and they turned out to be made by Kirby-Morgan (fantastic stuff) and worked better than many primaries. Spectre, you are a bit of an exception...Apeks regs are a...

Funny....here in Canada, USD never used "repair rings." Only Sherwood did.

If I can add.... Be careful with this old AMF...the one-piece yoke and body is not rated for hp tanks (ie 3000 psi) and should only be used with low pressure (2400-2650 psi) If this seems like needless paranoia, let me just say that there is still a big hole in my flow bench where the...

>"At shallow depths, more and more time is needed to achieve a >good gas load. If you are a deep-sea diver with a surface >supply (hose), you could stay at a shallow depth for quite a few >hours since the gas supply is unlimited. You endurance is not, >however. For long exposures, it necessary...

This seems to be the story... Apeks is a UK based regulator and valve manufacturer. They made and supplied regulators to both Zeagle and Beauchat. Zeagle is a harness manufacturer that specialized in skydiving equipment, and dabbled in BCD's long ago. They manufactured the AT PAC for a...

I'm on Vancouver Island and I do the bulk of my diving here. If anyone is looking to dive here, or for a guide, lemme know. Might I say that a trip here without a dive on Hornby Island to look for six gills (hexanchus griseus) would be incomplete. Race Rocks is great, Port Hardy amazing...

But you anwered mine...thanks. Here in Canada, I was told by one doctor that he could do a test for PFO, and his method was to inject Argon gas and then use Doppler Sonar Imaging to detect bubbles. He admitted that the tests were inconclusive, and suggested that the test might be done with...

Strangely enough, I once met a girl who decided to do her own research on the subject. I was in _________(withheld so as not to taint your opinion of this fabulous dive destination) and there was a DM named Tina who, after a few beers invited me to her place. I was not inclined to decline...

Excellent, thank you all, and especially Dr. Paul. I wouldn't call it elementary, but it is logical, and seems to be the same as I learned in the past...however, I guess my understanding was imperfect enough that I couldn't dredge it up for my students. If no one minds, I'd like to use this...

Well, Dr Paul, you have me...a bit I am aware that breathing diluent gas (A) for a time, and then switching to (B) gas will allow (A) gas to off-gas at its tissue half-time, whilst gas (B) starts to on-gas tissue compartments at a different rate, determined by many factors, including...

Ok, I like where this is going. Another question. If a given party was, for all intents and purposes, saturated with nitrogen.... what would happen, physiologically, if they switched to a mixture with a different diluent gas...say helium. Would the off-gassing of the nitrogen be a...

Thanks Tooth Doc, that cleared up a bit. There's no stunt yet, I was just wondering whether staying wet for long periods of time had any long term physiological effects. I suppose mariners of old spent hundreds of hours wet with no *reported* effects. d