That cool double-hose look

So it was water pressure on the one side of the diaphragm and air pressure on the other. Breathing in lowered pressure and opened the valve, breathing out increased the pressure again and closed the valve before the air was vented out of holes in the can-like enclosure. It's easy to see that this arrangement only worked right at a given water pressure. Go deeper and air was wasted. Go shallower and breathing effort increased. Not so good.So later on, Aqua-lung used 2-stage balanced designs where the first stage reduced tank pressure to an intermediate pressure of about 135 psi via a pressure-reducing valve. The second stage was a downstream diaphragm supplying air in sync with the diver's inhaling and exhaling.

As cool-looking as the two-hose design was, it had a number of disadvantages. There was the varying breathing effort depending on the position of the mouthpiece. The air-filled hoses added to buoyancy issues (though that can be minimized via hose weights). And all that air could yank the mouthpiece right out of your face when you turned into a vertical position. As a result, dual-hose designs all but disappeared around 1980.Anyway, a couple of years ago, Aqua-Lung introduced a "retro" regulator, dual hoses and all. However, while it sort of looked like the originals, the new model, called "Mistral,To use one with a sprinkler, you need to turn on the water before you put the sprinkler in place. When you turn the water off, the Flexible hose will contract, and it may pull the sprinkler through your garden." does not have the simple elegance of the round "tin-can" dual hose regulators.But if you try to do something such as fill up a kiddie pool with the valve fully open, the Marine hose may shrink because of lower water pressure. And using them with sprinklers also poses a challenge. With the Mistral, what you get is essentially a standard, contemporary-issue Aqua-Lung Titan first stage, largish re-breather-style hoses, and then a single-hose second stage attached to the first stage, with a small hose going from the first to the second stage. Yes, you can actually separate the second stage and put it elsewhere. The housing is new, but somehow Aqua-Lung decided not to incorporate the two stages into a cohesive unit. I've read that this was due to European regulations,It was the second encounter with police this year for road sweeper, who was charged in March with disorderly intoxication and resisting an officer in Miami. though I have not seen proof of that.

How well does it work? Those who have used the new Mistral dual-hose generally seem to prefer the older, original designs such as the Phoenix Royal Aqua Master. The hoses of the retro model are described as too large and buoyant compared to the older smaller-diameter rubber hoses, though some view them,MacAdam described the area as flat wire and said the cause of the fire is unknown, but is under investigation. and the new mouthpiece, as an improvement. Free-flowing is still described as a problem,Illinois State Police say Rodriguez was ticketed on Friday for driving under the influence, epoxy coated rebar and improper lane usage. but users like the standard high and low pressure ports, as well as readily available service for the modern parts used in this retro Mistral. As of now, it is still on the Aqua-Lung website, but it is not listed in their 2007 catalog anymore.So should I try to get one? There are some on eBay, and a local dive shop has one listed on its website, albeit at the very high original list price. I have no idea if I should go for it. I am tempted, though.