Quick disconnect of offboard, onboard???

Claudio · 16th March 2007, 12:05

Quote: (Originally Posted by Dave Sutton)

The best way is to emplace a 3-port ball valve on the rig, feed both the onboard and offboard gas supplies to it (with a QD for the offboard) and the output to the BOV. This way you can hand-off the offboard if you *really* want to and then simply turn the valve and have onboard into the BOV. This is the standard setup that we use on the Mark-15 and it works well for any rig. Brass 3-port valves are not expensive and with some sensible hosing can be incorporated in a streamlined way.

Dave

Hi Dave,
what you tasks about a system similar to that proposed from you, but with the out of the 3 ways ball valve directly on the manifold (with the BOV on the manifold)? In this way both the inboard gas and offboard can feed the CC and OC.
Thanks
Claudio

Philippe GERIN · 16th March 2007, 12:10

Quote: (Originally Posted by Icarusflies)

I am planning to get an optima which will be my first rebreater. <snip> Now, since I don't like <snip> to be over weighted I think I ll dive with the 13 cuf AL tanks.
Steve

Since, it'll be your first rebreather I'd suggest you try the other tank options of the Optima and if you dive salt water in wet/dry suit or fresh water in drysuit (I see you're located in Florida) you might need the additionnal balast.
Then you could end up choosing the 27cft steel LP or even the 30cft Worthington HP. In that case for NDL rec dives you might not need the QD whip but plug the BOV into the dil and have your 30cft or 40cft AL bailout available for both you and your budy.
If you want QDs, then there are a number of choices: Golem gear, Ocean reef FFM QDs (these are the right series of CEJN QDs), Swagelok QC6 and I probably missed one or two.
ScubaDadMiami, you might want to chime in and show Steve the way to your club?
Best
Philippe

Dave Sutton · 16th March 2007, 12:22

Quote: (Originally Posted by Claudio)

Hi Dave, what you tasks about a system similar to that proposed from you, but with the out of the 3 ways ball valve directly on the manifold (with the BOV on the manifold)? In this way both the inboard gas and offboard can feed the CC and OC. Thanks Claudio

Can be done. Just make sure the internal rig manifold sizes support open circuit gas volume needs. Mark-15, for example, does not, the diameters of the tubes are too small for open circuit. Inspo has all large diameter hoses and ports so it would work. Check all others. Just make sure!

Dave

Claudio · 16th March 2007, 12:42

Quote: (Originally Posted by Dave Sutton)

Can be done. Just make sure the internal rig manifold sizes support open circuit gas volume needs. Mark-15, for example, does not, the diameters of the tubes are too small for open circuit. Inspo has all large diameter hoses and ports so it would work. Check all others. Just make sure!

Dave

Thanks Dave for the answer. The problem is just this and your answer has encouraged to me to try. From some time I am thinking next to this solution, after to have tried almost all the others. The only doubt was just of the gas flow in OC. For the truth my Inspo had already the autoair feed from the manifold and I had no problems with it. What you tasks of the three ways valve swagelok 1/4 NPT (5 mm diameter?) ... the 3/8 is too big for being mounted inside of the Inspo...

**dz3866** · 16th March 2007, 13:56

Quote: (Originally Posted by Icarusflies)

Hello All;

Well, this is my question. I am planning to get an optima which will be my first rebreater and as part of the safety oriented upgrades I am going to buy a BOV. Now, since I ll be doing no deco/recreational dives and I don't like to be over weighted I think I ll dive with the 13 cuf AL tanks. This will not permit me to use the diluent tank as bailout so I ll have to connect the BOV offboard. In the case that my buddy OC or CCR is in need of air I ll donate the offboard tank which will have a second stage and I d like to be able to clip the tank to his BC. For this I need a) an easy way to disconnect the LP hose from the offboard to the BOV and b) so I am not left without OC even in an ascend I want to connect the onboard cylinder to the BOV. The question is; is there a device the allows me to easily, safely and reliable connect and disconnect a LP hose to a BOV in order to exchange tanks in the water ?

Thank you;

Steve

Hey steve, any of your CCR buddys should never need your bailout,(no deco/ rec limits) they should be set up like you, but your OC buddys should fully understand the basics of your unit and why you choose to carry bailout. If some of your dives will be with OC pals talk them into straping on a small bailout system for themselves so you are a last resort.

***ScubaDadMiami*** · 16th March 2007, 14:30

You can see how some of us are solving these issues when you come dive with the Florida SCRUB Club. Two of us have BOVs, one is using the Optima Rite Source (second stage integrating into wing connector), and one is using standard bail out bottles. So, this will give you a chance to see some different configurations.

Dave Sutton · 16th March 2007, 14:39

Quote: (Originally Posted by Claudio)

Thanks Dave for the answer. The problem is just this and your answer has encouraged to me to try. From some time I am thinking next to this solution, after to have tried almost all the others. The only doubt was just of the gas flow in OC. For the truth my Inspo had already the autoair feed from the manifold and I had no problems with it. What you tasks of the three ways valve swagelok 1/4 NPT (5 mm diameter?) ... the 3/8 is too big for being mounted inside of the Inspo...

1/4 valve is just fine. There is no need to spend for the Swagelok, McMaster-Carr has an all brass valve that is fine and costs about $20.00. The Autoair feed is the same connection as I suggest so you are already on the right track.

Dave

Icarusflies · 16th March 2007, 16:44

I see how useful this can be and I definitely I will go that way. What 3 port valve would you recommend?

One more question....As you know I have never used a breather so the training is going to be very new to me. Should I start the training using regular bailout methods (second stage onboard / offboard and deploy it when need it ) or is it a better approach to make all the upgrades (BOV and 3 port valve for bailout on and off board) and train with this configration...It does not look hard to use but again I am new with breathers....

Icarusflies · 16th March 2007, 16:59

If I am not overweighed with 27's that will be the way to go and then I just have the LP hose connected to the BOV as suggested by Philippe and a regular offboard bail out with second stage...even though I really like the idea of having the QD's and the 3 port valve.

Yes DZ, all my buddies are OC including my father and I already convinced him to get a 19 cuf bail out. I truly believe in the self reliant diver....some divers out there are a danger for themselves and their buddies.

ScubaDad, you can count with a new SCRUB member as soon as I am done with training.

Steve

seafox · 17th March 2007, 14:40

Quote: (Originally Posted by Stephane)

I will give the regulator, not the tank.

Agreed. I don't give the tank! I offer the reg not the tank!
The reg is on a 5' hose.
I also have two LP hoses with QD's.
One with a QD from MJ Eng. which has a larger orifice for efficientt flow at depth, that connects to my BOV,
and one with standard BC QD, which is ready to attach to my CL should I need to.

Cornel

16th March 2007, 12:05	#11 (permalink)
Claudio New Member Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Other CCR Join Date: Nov 2005 Location: ITALY - Trento Posts: 64	Re: Quick disconnect of offboard, onboard??? Quote: (Originally Posted by Dave Sutton) The best way is to emplace a 3-port ball valve on the rig, feed both the onboard and offboard gas supplies to it (with a QD for the offboard) and the output to the BOV. This way you can hand-off the offboard if you really want to and then simply turn the valve and have onboard into the BOV. This is the standard setup that we use on the Mark-15 and it works well for any rig. Brass 3-port valves are not expensive and with some sensible hosing can be incorporated in a streamlined way. Dave Hi Dave, what you tasks about a system similar to that proposed from you, but with the out of the 3 ways ball valve directly on the manifold (with the BOV on the manifold)? In this way both the inboard gas and offboard can feed the CC and OC. Thanks Claudio
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16th March 2007, 12:10	#12 (permalink)
Philippe GERIN ccr apprentice Current Rebreather/s: Megalodon Classic Kiss Other Rebreather/s: Join Date: May 2005 Location: Strasbourg, France Posts: 633	Re: Quick disconnect of offboard, onboard??? Quote: (Originally Posted by Icarusflies) I am planning to get an optima which will be my first rebreater. <snip> Now, since I don't like <snip> to be over weighted I think I ll dive with the 13 cuf AL tanks. Steve Since, it'll be your first rebreather I'd suggest you try the other tank options of the Optima and if you dive salt water in wet/dry suit or fresh water in drysuit (I see you're located in Florida) you might need the additionnal balast. Then you could end up choosing the 27cft steel LP or even the 30cft Worthington HP. In that case for NDL rec dives you might not need the QD whip but plug the BOV into the dil and have your 30cft or 40cft AL bailout available for both you and your budy. If you want QDs, then there are a number of choices: Golem gear, Ocean reef FFM QDs (these are the right series of CEJN QDs), Swagelok QC6 and I probably missed one or two. ScubaDadMiami, you might want to chime in and show Steve the way to your club? Best Philippe
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16th March 2007, 12:22	#13 (permalink)
Dave Sutton Membership Cancelled Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Classic Kiss rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,637	Re: Quick disconnect of offboard, onboard??? Quote: (Originally Posted by Claudio) Hi Dave, what you tasks about a system similar to that proposed from you, but with the out of the 3 ways ball valve directly on the manifold (with the BOV on the manifold)? In this way both the inboard gas and offboard can feed the CC and OC. Thanks Claudio Can be done. Just make sure the internal rig manifold sizes support open circuit gas volume needs. Mark-15, for example, does not, the diameters of the tubes are too small for open circuit. Inspo has all large diameter hoses and ports so it would work. Check all others. Just make sure! Dave
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16th March 2007, 12:42	#14 (permalink)
Claudio New Member Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Other CCR Join Date: Nov 2005 Location: ITALY - Trento Posts: 64	Re: Quick disconnect of offboard, onboard??? Quote: (Originally Posted by Dave Sutton) Can be done. Just make sure the internal rig manifold sizes support open circuit gas volume needs. Mark-15, for example, does not, the diameters of the tubes are too small for open circuit. Inspo has all large diameter hoses and ports so it would work. Check all others. Just make sure! Dave Thanks Dave for the answer. The problem is just this and your answer has encouraged to me to try. From some time I am thinking next to this solution, after to have tried almost all the others. The only doubt was just of the gas flow in OC. For the truth my Inspo had already the autoair feed from the manifold and I had no problems with it. What you tasks of the three ways valve swagelok 1/4 NPT (5 mm diameter?) ... the 3/8 is too big for being mounted inside of the Inspo...
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16th March 2007, 13:56	#15 (permalink)
dz3866 zboy Current Rebreather/s: Sport Kiss Other Rebreather/s: Not Bought Yet Join Date: May 2005 Location: US California Posts: 146	Re: Quick disconnect of offboard, onboard??? Quote: (Originally Posted by Icarusflies) Hello All; Well, this is my question. I am planning to get an optima which will be my first rebreater and as part of the safety oriented upgrades I am going to buy a BOV. Now, since I ll be doing no deco/recreational dives and I don't like to be over weighted I think I ll dive with the 13 cuf AL tanks. This will not permit me to use the diluent tank as bailout so I ll have to connect the BOV offboard. In the case that my buddy OC or CCR is in need of air I ll donate the offboard tank which will have a second stage and I d like to be able to clip the tank to his BC. For this I need a) an easy way to disconnect the LP hose from the offboard to the BOV and b) so I am not left without OC even in an ascend I want to connect the onboard cylinder to the BOV. The question is; is there a device the allows me to easily, safely and reliable connect and disconnect a LP hose to a BOV in order to exchange tanks in the water ? Thank you; Steve Hey steve, any of your CCR buddys should never need your bailout,(no deco/ rec limits) they should be set up like you, but your OC buddys should fully understand the basics of your unit and why you choose to carry bailout. If some of your dives will be with OC pals talk them into straping on a small bailout system for themselves so you are a last resort.
(Offline)

16th March 2007, 14:30	#16 (permalink)
*ScubaDadMiami* Moderator Current Rebreather/s: Optima Other Rebreather/s: Join Date: Sep 2005 Location: Florida, USA Posts: 2,068	Re: Quick disconnect of offboard, onboard??? You can see how some of us are solving these issues when you come dive with the Florida SCRUB Club. Two of us have BOVs, one is using the Optima Rite Source (second stage integrating into wing connector), and one is using standard bail out bottles. So, this will give you a chance to see some different configurations. __________________ Howard Packer IANTD CCR Instructor Miami Beach, Florida CCRDiveTraining.com
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16th March 2007, 14:39	#17 (permalink)
Dave Sutton Membership Cancelled Current Rebreather/s: Sport Kiss MK 15.X rEvo Other CCR Azimuth Home Build Other Rebreather/s: Classic Kiss rEvo Other CCR Azimuth Home Build Join Date: Jun 2006 Location: Narragansett, Rhode Island and Hackettstown, New Jersey Posts: 2,637	Re: Quick disconnect of offboard, onboard??? Quote: (Originally Posted by Claudio) Thanks Dave for the answer. The problem is just this and your answer has encouraged to me to try. From some time I am thinking next to this solution, after to have tried almost all the others. The only doubt was just of the gas flow in OC. For the truth my Inspo had already the autoair feed from the manifold and I had no problems with it. What you tasks of the three ways valve swagelok 1/4 NPT (5 mm diameter?) ... the 3/8 is too big for being mounted inside of the Inspo... 1/4 valve is just fine. There is no need to spend for the Swagelok, McMaster-Carr has an all brass valve that is fine and costs about $20.00. The Autoair feed is the same connection as I suggest so you are already on the right track. Dave
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16th March 2007, 16:44	#18 (permalink)
Icarusflies New Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2007 Location: Miami Posts: 52	Re: Quick disconnect of offboard, onboard??? I see how useful this can be and I definitely I will go that way. What 3 port valve would you recommend? One more question....As you know I have never used a breather so the training is going to be very new to me. Should I start the training using regular bailout methods (second stage onboard / offboard and deploy it when need it ) or is it a better approach to make all the upgrades (BOV and 3 port valve for bailout on and off board) and train with this configration...It does not look hard to use but again I am new with breathers....
(Offline)

16th March 2007, 16:59	#19 (permalink)
Icarusflies New Member Current Rebreather/s: Not Bought Yet Other Rebreather/s: Not Bought Yet Join Date: Feb 2007 Location: Miami Posts: 52	Re: Quick disconnect of offboard, onboard??? If I am not overweighed with 27's that will be the way to go and then I just have the LP hose connected to the BOV as suggested by Philippe and a regular offboard bail out with second stage...even though I really like the idea of having the QD's and the 3 port valve. Yes DZ, all my buddies are OC including my father and I already convinced him to get a 19 cuf bail out. I truly believe in the self reliant diver....some divers out there are a danger for themselves and their buddies. ScubaDad, you can count with a new SCRUB member as soon as I am done with training. Steve
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17th March 2007, 14:40	#20 (permalink)
seafox 02ptima Instructor Current Rebreather/s: Inspiration Classic Optima Other Rebreather/s: Join Date: Mar 2005 Location: TORONTO, CANADA -Have "02ptima" will travel! Posts: 172	Re: Quick disconnect of offboard, onboard??? Quote: (Originally Posted by Stephane) I will give the regulator, not the tank. Agreed. I don't give the tank! I offer the reg not the tank! The reg is on a 5' hose. I also have two LP hoses with QD's. One with a QD from MJ Eng. which has a larger orifice for efficientt flow at depth, that connects to my BOV, and one with standard BC QD, which is ready to attach to my CL should I need to. Cornel __________________ Protect the SHARKS! Excellence is never an accident; it is always the result of high intention, sincere effort, intelligent direction, skillful execution and the vision to see obstacles as opportunities. Experience is a hard teacher because she gives the test first, the lesson afterwards! Last edited by seafox : 17th March 2007 at 14:44.
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