So How do you connect your BOV up

**Dave Sutton** · 11th March 2007, 02:55

Quote: (Originally Posted by Drmike)

ha ha yeh tell me about it

counter-boring with a larger drill works - but theres a few 'prototypes' laying around my workshop lol!

I figured you would understand. You *can* buy the tool (From Parker-Hannifin)... saves much cursing. And I think I've got a few prototypes here myself...

Dave

Mark Chase · 11th March 2007, 13:48

Quote: (Originally Posted by Dave Sutton)

Mark, you run the offboard gas line across your waist to the QD on the right side? Offboard gas carried on your left side?

Dave

Were you referring to my rig?

The V4Tec only accepts a gas feed from one side. The right. I always dive with my lean mix left and rich right. So my deep bailout gas is on the left.

I run the 1.2m hose back along the stage and up over behind my head and into the QD

It looks a bit convoluted but even if the BOV fed from the left Id have to run the feed up back and over my shoulder to keep the hose neat and tidy.

ATB

Mark Chase

Digger · 11th March 2007, 14:05

Quote: (Originally Posted by Mark Chase)

Were you referring to my rig?

The V4Tec only accepts a gas feed from one side. The right. I always dive with my lean mix left and rich right. So my deep bailout gas is on the left.

I run the 1.2m hose back along the stage and up over behind my head and into the QD

It looks a bit convoluted but even if the BOV fed from the left Id have to run the feed up back and over my shoulder to keep the hose neat and tidy.

ATB

Mark Chase

I run the BOV from my KISS almost exactly the same way. I use a shorter hose (90cm) which runs alogn the exhale hose and behind my head, and the connector sits above my left hand shoulder D-ring. This is easily visible to buddies and I just run a hose from the left hand stage over the top of things to the connector.

I try and avoid convoluted solutions to a fairly simple problem. Switching blocks, manifolds, connectors wherever possible are minimised, but obviously some setups make that more necessary than others. On the Meg as I understand it you'd just be adding a BOV to the existing setup so you could easily run it this way - adding redundancy but not adding a lot of failure points and possibilities for confusion.

Plus it doesn't cost much, because all you need to get is the BOV and a quick connect.

Digs.

**Dave Sutton** · 11th March 2007, 17:07

Quote: (Originally Posted by Mark Chase)

Were you referring to my rig?

Sorry Mark: I was addressing Mark Nix. We're doing the Doria later and I was trying to figure out if our QD's are compatable for location and type. Thanks for the details of your rig too. Looks just fine.

Dave

***ScubaDadMiami*** · 11th March 2007, 17:37

I have elected to configure my BOV to run to my onboard diluent bottle. My Optima uses 27 cubic foot bottles onboard. So, even on deep dives, taking a couple of breaths while bailing out to my offboard gas would not be fatal. (I would make sure to have full onboard bottles before commencing a deep dive.) If the issue calls for running semi-closed after that, I can just plug offboard into my manual addition valve, unplugging the line from the onboard diluent.

Why would it make sense to add additional connections, which are potential failure points, just to avoid taking the BOV out of my mouth to switch to my offboard open circuit regulator after my sanity breaths? If I have to switch regulators after that (such as a gas switch), that would not be so terrible. Again, running semi-closed, I could just use offboard gas for that by plugging in to my existing manual addition valve.

**trob09** · 11th March 2007, 17:53

here's an illustration of my set-up and a couple of photos of the real-life application

**Dave Sutton** · 11th March 2007, 18:21

Quote: (Originally Posted by ScubaDadMiami)

Why would it make sense to add additional connections, which are potential failure points, just to avoid taking the BOV out of my mouth to switch to my offboard open circuit regulator after my sanity breaths?

Narcosis onset All depends on the depth you dive. Your system works and is exactly how I div e when nnot on mix. Being narc-hammered would suck when things are going badly to begin with.

Dave

**trob09** · 11th March 2007, 18:31

Quote: (Originally Posted by ScubaDadMiami)

I have elected to configure my BOV to run to my onboard diluent bottle. My Optima uses 27 cubic foot bottles onboard. So, even on deep dives, taking a couple of breaths while bailing out to my offboard gas would not be fatal. (I would make sure to have full onboard bottles before commencing a deep dive.) If the issue calls for running semi-closed after that, I can just plug offboard into my manual addition valve, unplugging the line from the onboard diluent.

Why would it make sense to add additional connections, which are potential failure points, just to avoid taking the BOV out of my mouth to switch to my offboard open circuit regulator after my sanity breaths? If I have to switch regulators after that (such as a gas switch), that would not be so terrible. Again, running semi-closed, I could just use offboard gas for that by plugging in to my existing manual addition valve.

To my thinking, a sanity breath can easily achieved via Open Loop. A BOV is there for a CO2 hit. The most frightening thing to me is the repeated accounts of those who've had a CO2 hit that they knew they needed to get off the rebreather but just couldn't bring themselves to do it. A legitimate CO2 hit is also likely to require more than 1 or 2 (or 10 or 20) breaths to get over. by plumbing in my deep bail-out bottle, I have access to that gas without having to take anything out of my mouth.

I can switch off of it later when things are more sorted & I'm hanging on deco.

Claudio · 11th March 2007, 20:11

The system proposed from TROB09… is simplest… and costs little. I am constructing it on my Inspiration rebreather and I want to only add a Whitey-Swagelok on-off valve (or a Flow stop, but I have doubts on the effective flow of this second solution...) on the line of the off-board gas. In this way I can leave always connected GCS APD during the dive and hold open the valve of the external bail out bottle. If I want to use the external gas, I must only open the Whitey valve (or fl.st.) and close the feeding onboard
Claudio

**fireman** · 11th March 2007, 20:39

Hey does everyone rely on the QC to stop the gas flow both to and from the on board gas supplies? (as opposed to having a shut off valve also)

11th March 2007, 02:55	#11 (permalink)
Dave Sutton Diveshop of Horrors 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: 2,672	Re: So How do you connect your BOV up Quote: (Originally Posted by Drmike) ha ha yeh tell me about it counter-boring with a larger drill works - but theres a few 'prototypes' laying around my workshop lol! I figured you would understand. You can buy the tool (From Parker-Hannifin)... saves much cursing. And I think I've got a few prototypes here myself... Dave __________________ "Changes in Lattitudes, Changes in Attitudes, Nothing remains quite the same".... www.nobubblediving.com
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11th March 2007, 13:48	#12 (permalink)
Mark Chase I go down for ages Current Rebreather/s: Classic Kiss Other Rebreather/s: Inspiration Classic Join Date: Jan 2005 Location: Kent Posts: 2,700	Re: So How do you connect your BOV up Quote: (Originally Posted by Dave Sutton) Mark, you run the offboard gas line across your waist to the QD on the right side? Offboard gas carried on your left side? Dave Were you referring to my rig? The V4Tec only accepts a gas feed from one side. The right. I always dive with my lean mix left and rich right. So my deep bailout gas is on the left. I run the 1.2m hose back along the stage and up over behind my head and into the QD It looks a bit convoluted but even if the BOV fed from the left Id have to run the feed up back and over my shoulder to keep the hose neat and tidy. ATB Mark Chase __________________ Is it supposed to make that noise ? I took my unit to the dive shop and demanded they bolt on every thing that would fit. Join my elite diving teem and get a Tshirt "Doing It Chasey"Hammerhead Eccr Advanced Diving System
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11th March 2007, 14:05	#13 (permalink)
Digger Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Not Bought Yet Inspiration Classic Classic Kiss Join Date: Feb 2005 Location: Midlands UK Posts: 196	Re: So How do you connect your BOV up Quote: (Originally Posted by Mark Chase) Were you referring to my rig? The V4Tec only accepts a gas feed from one side. The right. I always dive with my lean mix left and rich right. So my deep bailout gas is on the left. I run the 1.2m hose back along the stage and up over behind my head and into the QD It looks a bit convoluted but even if the BOV fed from the left Id have to run the feed up back and over my shoulder to keep the hose neat and tidy. ATB Mark Chase I run the BOV from my KISS almost exactly the same way. I use a shorter hose (90cm) which runs alogn the exhale hose and behind my head, and the connector sits above my left hand shoulder D-ring. This is easily visible to buddies and I just run a hose from the left hand stage over the top of things to the connector. I try and avoid convoluted solutions to a fairly simple problem. Switching blocks, manifolds, connectors wherever possible are minimised, but obviously some setups make that more necessary than others. On the Meg as I understand it you'd just be adding a BOV to the existing setup so you could easily run it this way - adding redundancy but not adding a lot of failure points and possibilities for confusion. Plus it doesn't cost much, because all you need to get is the BOV and a quick connect. Digs.
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11th March 2007, 17:07	#14 (permalink)
Dave Sutton Diveshop of Horrors 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: 2,672	Re: So How do you connect your BOV up Quote: (Originally Posted by Mark Chase) Were you referring to my rig? Sorry Mark: I was addressing Mark Nix. We're doing the Doria later and I was trying to figure out if our QD's are compatable for location and type. Thanks for the details of your rig too. Looks just fine. Dave __________________ "Changes in Lattitudes, Changes in Attitudes, Nothing remains quite the same".... www.nobubblediving.com
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11th March 2007, 17:37	#15 (permalink)
*ScubaDadMiami* Moderator Current Rebreather/s: Optima Other Rebreather/s: Join Date: Sep 2005 Location: Florida, USA Posts: 2,132	Re: So How do you connect your BOV up I have elected to configure my BOV to run to my onboard diluent bottle. My Optima uses 27 cubic foot bottles onboard. So, even on deep dives, taking a couple of breaths while bailing out to my offboard gas would not be fatal. (I would make sure to have full onboard bottles before commencing a deep dive.) If the issue calls for running semi-closed after that, I can just plug offboard into my manual addition valve, unplugging the line from the onboard diluent. Why would it make sense to add additional connections, which are potential failure points, just to avoid taking the BOV out of my mouth to switch to my offboard open circuit regulator after my sanity breaths? If I have to switch regulators after that (such as a gas switch), that would not be so terrible. Again, running semi-closed, I could just use offboard gas for that by plugging in to my existing manual addition valve. __________________ Howard Packer IANTD CCR Instructor Miami Beach, Florida CCRDiveTraining.com
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11th March 2007, 17:53	#16 (permalink)
trob09 . Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Feb 2005 Posts: 699	Re: So How do you connect your BOV up here's an illustration of my set-up and a couple of photos of the real-life application Last edited by trob09 : 9th July 2007 at 20:35.
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11th March 2007, 18:21	#17 (permalink)
Dave Sutton Diveshop of Horrors 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: 2,672	Re: So How do you connect your BOV up Quote: (Originally Posted by ScubaDadMiami) Why would it make sense to add additional connections, which are potential failure points, just to avoid taking the BOV out of my mouth to switch to my offboard open circuit regulator after my sanity breaths? Narcosis onset All depends on the depth you dive. Your system works and is exactly how I div e when nnot on mix. Being narc-hammered would suck when things are going badly to begin with. Dave __________________ "Changes in Lattitudes, Changes in Attitudes, Nothing remains quite the same".... www.nobubblediving.com
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11th March 2007, 18:31	#18 (permalink)
trob09 . Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Feb 2005 Posts: 699	Re: So How do you connect your BOV up Quote: (Originally Posted by ScubaDadMiami) I have elected to configure my BOV to run to my onboard diluent bottle. My Optima uses 27 cubic foot bottles onboard. So, even on deep dives, taking a couple of breaths while bailing out to my offboard gas would not be fatal. (I would make sure to have full onboard bottles before commencing a deep dive.) If the issue calls for running semi-closed after that, I can just plug offboard into my manual addition valve, unplugging the line from the onboard diluent. Why would it make sense to add additional connections, which are potential failure points, just to avoid taking the BOV out of my mouth to switch to my offboard open circuit regulator after my sanity breaths? If I have to switch regulators after that (such as a gas switch), that would not be so terrible. Again, running semi-closed, I could just use offboard gas for that by plugging in to my existing manual addition valve. To my thinking, a sanity breath can easily achieved via Open Loop. A BOV is there for a CO2 hit. The most frightening thing to me is the repeated accounts of those who've had a CO2 hit that they knew they needed to get off the rebreather but just couldn't bring themselves to do it. A legitimate CO2 hit is also likely to require more than 1 or 2 (or 10 or 20) breaths to get over. by plumbing in my deep bail-out bottle, I have access to that gas without having to take anything out of my mouth. I can switch off of it later when things are more sorted & I'm hanging on deco.
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11th March 2007, 20:11	#19 (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: So How do you connect your BOV up The system proposed from TROB09… is simplest… and costs little. I am constructing it on my Inspiration rebreather and I want to only add a Whitey-Swagelok on-off valve (or a Flow stop, but I have doubts on the effective flow of this second solution...) on the line of the off-board gas. In this way I can leave always connected GCS APD during the dive and hold open the valve of the external bail out bottle. If I want to use the external gas, I must only open the Whitey valve (or fl.st.) and close the feeding onboard Claudio Last edited by Claudio : 11th March 2007 at 21:36.
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11th March 2007, 20:39	#20 (permalink)
fireman rEvo combat swimmer Current Rebreather/s: rEvo Other CCR Other Rebreather/s: rEvo Other CCR Join Date: Nov 2006 Location: chicago Posts: 518	Re: So How do you connect your BOV up Hey does everyone rely on the QC to stop the gas flow both to and from the on board gas supplies? (as opposed to having a shut off valve also) __________________ Heres to you Capt. Bill Never Forget, and stay safe everyone.
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