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Scuba Forum / General / May 2004difference between high and low pressure ports
I have an Aqualung Conshelf XII regulator. The first stage has three ports. One that has my pressure gauge attached to it is stamped HP. Two are not stamped. One is for my primary regulator. The other is for the BCD fill/AIR II. How do I know which ones are LP or HP. Which devices have to hook up to what? > I have an Aqualung Conshelf XII regulator. The first stage has three > ports. One that has my pressure gauge attached to it is stamped HP. > Two are not stamped. One is for my primary regulator. The other is > for the BCD fill/AIR II. How do I know which ones are LP or HP. > Which devices have to hook up to what? I believe the only thing that needs high pressure would be the pressure gauge. I checked once - there is a different thread pitch for the HP and LP ports. Basically to make it impossible to hook up something to the wrong type of port. -Eric > > I have an Aqualung Conshelf XII regulator. The first stage has three > > ports. One that has my pressure gauge attached to it is stamped HP. [quoted text clipped - 4 lines] > I believe the only thing that needs high pressure would be the pressure > gauge. You believe? > I checked once - there is a different thread pitch for the HP and LP > ports. Basically to make it impossible to hook up something to the wrong > type of port. Nothing is fool proof (no reference to anybody intended). Lee >>I have an Aqualung Conshelf XII regulator. The first stage has three >>ports. One that has my pressure gauge attached to it is stamped HP. [quoted text clipped - 10 lines] > > -Eric I think the Conshelf XII dates from around the mid-70's. My closet has a Waterlung ATM500A from the same era, with three ports but none of them is marked. All the ports used the same thread in those days, which was not particularly smart. ab >I think the Conshelf XII dates from around the mid-70's. My closet has >a Waterlung ATM500A from the same era, with three ports but none of them >is marked. All the ports used the same thread in those days, which was >not particularly smart. My (very) old SP (MK-4?) has the same threads also. But different screw head ;) You won't belive... they sell also adapters, that you could "convert" HP port to LP one..... G.... For what purpose nobody knows..... Branko > I checked once - there is a different thread pitch for the HP and LP >ports. Basically to make it impossible to hook up something to the wrong >type of port. Not on the old Conshelf. --- Rich http://richlockyer.tripod.com/ The one that says HP would be HP. Have you taken a SCUBA class? I think it's amazing that you would ask this question if you have. If you have, you should still have the book. Turn to the equipment chapter and reread it. Jon > I have an Aqualung Conshelf XII regulator. The first stage has three > ports. One that has my pressure gauge attached to it is stamped HP. > Two are not stamped. One is for my primary regulator. The other is > for the BCD fill/AIR II. How do I know which ones are LP or HP. > Which devices have to hook up to what? > I have an Aqualung Conshelf XII regulator. The first stage has three > ports. One that has my pressure gauge attached to it is stamped HP. > Two are not stamped. One is for my primary regulator. The other is > for the BCD fill/AIR II. How do I know which ones are LP or HP. > Which devices have to hook up to what? With all due respect, if you don't know that answer to this, you should probably take your regulator to a certified technician for assembly. Count again, please. Your description sounds wrong. There should be at least 4 ports on your regulator. One for the primary, one for the alternate and one for your BCD. Some regulators have more. There is only one port marked high pressure because that's all the high pressure ports you have. It connects to your pressure gauge. Everything else should be set up for convenience. Put the hp port where you want it, usually pointing at an angle down to the left. That should put one of your low pressure ports up and left. That's where your inflator hose goes. If you use a combination inflator/alternate, that's where it goes. There should be one port up and right. In a conventional setup, that's for your primary. For a long hose setup, like the DIR configuration, that's where you alternate goes. The other port should be pointing down and right. In a conventional setup, that's for your alternate/octopus. For a long hose setup, that's where your long hose goes. If you can't follow this, definitely get some professional help. Lee Lee Conshelf XII is a dinosaur, dating back to around 1970. Back then, power inflators were very new, as were octopuses/safe seconds, and on that old reg it is very likely that it only had 2 LP ports. Top of the Line USD regulator (Calypos IV) in that period also (as I recall) only had 2 LP ports as well) John >> I have an Aqualung Conshelf XII regulator. The first stage has three >> ports. One that has my pressure gauge attached to it is stamped HP. [quoted text clipped - 23 lines] > >Lee I considered that after I wrote about the number of ports. Makes me wonder how many ports my first single hose regulator had. It was a USD Deep Star. Actually, it was probably an Aqua Lung Deep Star. It was an unbalanced first stage regulator that proved it was up to diving deep in Central Florida caves. Since I lacked a SPG back then, it also proved how easy it was to run out of gas. Lee > Lee > [quoted text clipped - 33 lines] > > > >Lee > Conshelf XII is a dinosaur, dating back to around 1970. Back then, > power inflators were very new, as were octopuses/safe seconds, and on > that old reg it is very likely that it only had 2 LP ports. Top of > the Line USD regulator (Calypos IV) in that period also (as I recall) > only had 2 LP ports as well) I dont go back to far with the equipment but was there a time when there was no hp port, in other words no pressure gauge just a reserve type valve, just curious ? Anyway, to respond to the original post if it has not been made clear the hp is a larger thread and will not thread into an lp port, even if it's not stamped you really cant screw it up although i wonder how a second stage would respond to 3000 psi, safety glasses anyone ! Kevin Falconer Fort Myers, FL >> Conshelf XII is a dinosaur, dating back to around 1970. Back then, >> power inflators were very new, as were octopuses/safe seconds, and on [quoted text clipped - 8 lines] >port, even if it's not stamped you really cant screw it up although i wonder >how a second stage would respond to 3000 psi, safety glasses anyone ! I think body armor or a riot shield might be more appropriate. >Kevin Falconer Fort Myers, FL  Signaturedillon When I was a kid, I thought the angel's name was Hark and the horse's name was Bob. > I dont go back to far with the equipment but was there a time when there > was no hp port, in other words no pressure gauge just a reserve type > valve, just curious ? Yes, some of the earliest single hose regs had first stages that were about the size of a walnut, and no port except the second stage. >Anyway, to respond to the original post if it has not > been made clear the hp is a larger thread and will not thread into an lp > port, even if it's not stamped you really cant screw it up although i wonder > how a second stage would respond to 3000 psi, safety glasses anyone ! > > Kevin Falconer Fort Myers, FL > > I dont go back to far with the equipment but was there a time when there > > was no hp port, in other words no pressure gauge just a reserve type > > valve, just curious ? > > Yes, some of the earliest single hose regs had first stages that were > about the size of a walnut, and no port except the second stage. Cylinder valves sometimes had a hp port for adding an SPG. > > Conshelf XII is a dinosaur, dating back to around 1970. Back then, > > power inflators were very new, as were octopuses/safe seconds, and on > > that old reg it is very likely that it only had 2 LP ports. Top of > > the Line USD regulator (Calypos IV) in that period also (as I recall) > > only had 2 LP ports as well) > I dont go back to far with the equipment but was there a time when there > was no hp port, in other words no pressure gauge just a reserve type > valve, just curious ? I had a USD Deep Star in 1969. It had a high pressure port. I do not know how many low pressure ports it had. Back then, we only used one. Lee > > > Conshelf XII is a dinosaur, dating back to around 1970. Back then, > > > power inflators were very new, as were octopuses/safe seconds, and on [quoted text clipped - 10 lines] > > Lee My first regulator was a Calypso III and it had 2 lp ports and one hp port. I remember adding an adaptor to it so I could have a power inflator AND a octopus when teaching standards demanded it. > > Conshelf XII is a dinosaur, dating back to around 1970. Back then, > > power inflators were very new, as were octopuses/safe seconds, and on [quoted text clipped - 8 lines] > port, even if it's not stamped you really cant screw it up although i wonder > how a second stage would respond to 3000 psi With a BANG! Been there, done that. > > i wonder > > how a second stage would respond to 3000 psi > > With a BANG! > Been there, done that. The second stage on my Mica responded to an intermediate pressure of about 190 psi with an immediate freeflow, even in air. I would expect a bang only is the regulator's capacity to flow was exceeded by the port's flow at full pressure. As I recall, high pressure ports have a much smaller orifice. Lee >> > i wonder >> > how a second stage would respond to 3000 psi [quoted text clipped - 8 lines] > > Lee Most of the restriction is in the male hose fitting, not the port. >>> > i wonder >>> > how a second stage would respond to 3000 psi [quoted text clipped - 10 lines] > >Most of the restriction is in the male hose fitting, not the port. That's correct. The female fitting is always larger to accomodate the male fitting. However, in some cases, the male fitting is very large. Oh, wait, right NG, wrong topic :-) Signaturedillon When I was a kid, I thought the angel's name was Hark and the horse's name was Bob. > >> > i wonder > >> > how a second stage would respond to 3000 psi [quoted text clipped - 10 lines] > > Most of the restriction is in the male hose fitting, not the port. Good point. > I have an Aqualung Conshelf XII regulator. The first stage has three > ports. One that has my pressure gauge attached to it is stamped HP. > Two are not stamped. One is for my primary regulator. The other is > for the BCD fill/AIR II. How do I know which ones are LP or HP. > Which devices have to hook up to what? This is pretty much like asking which of the three pedals, (in a standard transmission), is the gas. If you don't know either take the course, or take it again..... You're yanking my snorkel, eh? If not, go take a real scuba course and then a GUE course... Then you will certainly understand the folly of your question if it's for real. Perhaps then you will realize just how harshly you've been previously Vaselined if you already shelled over money for training .... Actually, if your question is real, they kept the Vaseline... it was blood that lubed your a.s and ran down your leg intermingled with the instructors joy juice... Whether you're diving rivers, lakes, ocean, wrecks, ice, commercial or cave, No One Trains You Better! Not even the NAVY! Read my lips, I repeat "No One Trains You Better!" ABSOLUTELY!!! Let me add... I am not affiliated in any form or matter whatsoever with GUE. They would probably disavow any and all knowledge, recognition, etc. of me or my recommendations and this email will self destruct in 10 seconds.... Really! However, I was in the game decades ahead of them and recognize that the people at GUE have definitely "Got It!" Capeesh? BTW - While the Conshelf 12 was a revolution in its day and USD continued to use the design for many, many, more years, under many other model numbers and names, by today's standards, these regs should probably be retired to wall hanging status for when you retire and take up telling big tales about all the diving you did when a whipper snapper.... Okay... I concede perhaps, they're still suitable for cleaning the shallow end of the swiming pool... But, really, store it on the den wall between pool cleanings... Okay? Seriously, this is "Life Support Equipment!" Go buy yourself the most expensive regulator you can afford and then ask yourself whether your life is worth that much.... Better yet, ask your spouse, kids, parents, friends, etc. Make sure they clearly understand you may die if you use something as old as a Conshelf 12.... Your spouse will either encourage you to use it, divorce you, or if they really care about you, they will understand the MasterCard Bill when it comes in... Remerber always, "There are lots of Old Divers, and lots of Bold Divers... but very, very few Old & Bold Divers...." You got to Live to tell those big tales.... Thanks 4 The Chuckle.... SignatureBubba ~~~_/)~O~~~ ~~~~~~~~~~ Wakulla County, Florida Home of Mysterious Waters, The World's Largest and Deepest Spring "I bought a set of Golf Clubs and Took Up Sailing..." But, I know where all the ports on a Conshelf are still... LOL I have an Aqualung Conshelf XII regulator. The first stage has three ports. One that has my pressure gauge attached to it is stamped HP. Two are not stamped. One is for my primary regulator. The other is for the BCD fill/AIR II. How do I know which ones are LP or HP. Which devices have to hook up to what? MHK didn't teach me what my first stage ports were, my OW instructor did. I almost wish I had asked him just to see the look on his face. Heh, the cost for the DIRF would be money well spent for someone who doesn't know where to put their regs into their first stage, don't you think? Oh yeah, do you want to explain, in detail, what's wrong with the Conshelf for our friend Bruce? Jon You're yanking my snorkel, eh? If not, go take a real scuba course and then a GUE course... Then you will certainly understand the folly of your question if it's for real. Perhaps then you will realize just how harshly you've been previously Vaselined if you already shelled over money for training .... Actually, if your question is real, they kept the Vaseline... it was blood that lubed your a.s and ran down your leg intermingled with the instructors joy juice... Whether you're diving rivers, lakes, ocean, wrecks, ice, commercial or cave, No One Trains You Better! Not even the NAVY! Read my lips, I repeat "No One Trains You Better!" ABSOLUTELY!!! Let me add... I am not affiliated in any form or matter whatsoever with GUE. They would probably disavow any and all knowledge, recognition, etc. of me or my recommendations and this email will self destruct in 10 seconds.... Really! However, I was in the game decades ahead of them and recognize that the people at GUE have definitely "Got It!" Capeesh? BTW - While the Conshelf 12 was a revolution in its day and USD continued to use the design for many, many, more years, under many other model numbers and names, by today's standards, these regs should probably be retired to wall hanging status for when you retire and take up telling big tales about all the diving you did when a whipper snapper.... Okay... I concede perhaps, they're still suitable for cleaning the shallow end of the swiming pool... But, really, store it on the den wall between pool cleanings... Okay? Seriously, this is "Life Support Equipment!" Go buy yourself the most expensive regulator you can afford and then ask yourself whether your life is worth that much.... Better yet, ask your spouse, kids, parents, friends, etc. Make sure they clearly understand you may die if you use something as old as a Conshelf 12.... Your spouse will either encourage you to use it, divorce you, or if they really care about you, they will understand the MasterCard Bill when it comes in... Remerber always, "There are lots of Old Divers, and lots of Bold Divers... but very, very few Old & Bold Divers...." You got to Live to tell those big tales.... Thanks 4 The Chuckle.... SignatureBubba ~~~_/)~O~~~ ~~~~~~~~~~ Wakulla County, Florida Home of Mysterious Waters, The World's Largest and Deepest Spring "I bought a set of Golf Clubs and Took Up Sailing..." But, I know where all the ports on a Conshelf are still... LOL I have an Aqualung Conshelf XII regulator. The first stage has three ports. One that has my pressure gauge attached to it is stamped HP. Two are not stamped. One is for my primary regulator. The other is for the BCD fill/AIR II. How do I know which ones are LP or HP. Which devices have to hook up to what? > I have an Aqualung Conshelf XII regulator. The first stage has three > ports. One that has my pressure gauge attached to it is stamped HP. > Two are not stamped. One is for my primary regulator. The other is > for the BCD fill/AIR II. How do I know which ones are LP or HP. > Which devices have to hook up to what? Shred your certification card immediately. >I have an Aqualung Conshelf XII regulator. The first stage has three >ports. One that has my pressure gauge attached to it is stamped HP. >Two are not stamped. One is for my primary regulator. The other is >for the BCD fill/AIR II. How do I know which ones are LP or HP. >Which devices have to hook up to what? The HP port will have a pinhole opening. The SPG goes into that. Since it is a 3/8" fitting, you will need an adapter to get a modern SPG to thread into it. The BCD and reg can use either of the two LP ports. But.... The best use for that reg is to use a quarter to turn the IP down to 90psi, plug the HP port, put an OPV in one LP port, put an inflator hose on the other port, and put it on an argon tank to inflate your drysuit. It's a good solid reg, but not as good of a performer as modern regs, and spare parts for the 2nd stage are becoming hard to find. --- Rich http://richlockyer.tripod.com/ |
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