Isolator valve on ADV

Chris · 27th July 2005, 01:37

Hi all
Just a quick poll.
Do you have an Isolator valve on your ADV ?

I have been chatting to a few divers that swear by them for 2 reasons
1: If the ADV starts free flowing you can shut it off with a quick flick of the fingers.
2: Shutting the isolator during Deco makes for an easier unit to flush to get the O2 up.

Obviously there is a second stage on the Dil bottle so no need for OPV.

Your thoughts?

Cheers
Chris

**Steve** · 27th July 2005, 01:53

Yes for both of the reasons you mention mate. Having never had this option fitted to any of my previous breathers I am only a recent convert but can’t see why I should go back.

Nice Poll BTW

wizbang · 27th July 2005, 02:09

I use the tank valve to shut off the ADV.

I usually have the bailout tank connected to the off-board system (and it has a shut off vlave) so I guess I do use one in a manner of speaking.

My ADV is not reachable while diving so the tank valve is pretty simple.

I do have one on my onboard O2 reg as well as an overpressure relief valve.

Shutting off the ADV for O2 flushing just makes life so much easier.

***Decodiver*** · 27th July 2005, 04:47

I have an isolator on my ADV on my Meg but do not use one on my Inspiration, preferiing to isolate via the diluent cylinder.

One of the reasons for this is that the APD isolator leaks like a sieve.

Cheers,

Dave Cooper.

***jradomski*** · 27th July 2005, 05:09

Quote: (Originally Posted by Decodiver)

I have an isolator on my ADV on my Meg but do not use one on my Inspiration, preferiing to isolate via the diluent cylinder.

One of the reasons for this is that the APD isolator leaks like a sieve.

Cheers,

Dave Cooper.

get the ones from oxycheq.. they seal perfectly.. plus they operate in a fashion that makes more sense to me.. slide the isolator towards the inlet (away from outlet) and its closed, slide it towards the outlet and its open.. I think of break connection and make connection

To me the apd version (british way ;0) away from the outlet to open is ass backwards..

***Decodiver*** · 27th July 2005, 08:11

Quote: (Originally Posted by jradomski)

get the ones from oxycheq.. they seal perfectly.. plus they operate in a fashion that makes more sense to me.. slide the isolator towards the inlet (away from outlet) and its closed, slide it towards the outlet and its open.. I think of break connection and make connection

Yeah they're good, I have one on my Meg.

Cheers,

Dave Cooper.

**nigelh** · 27th July 2005, 08:18

Quote: (Originally Posted by jradomski)

get the ones from oxycheq.. they seal perfectly.. plus they operate in a fashion that makes more sense to me.. slide the isolator towards the inlet (away from outlet) and its closed, slide it towards the outlet and its open.. I think of break connection and make connection.

Agreed but throwing my right hand in a dry suit and a big thick glove over my left shoulder, find the hose and slide my hand forwards feeling the sleeve move means the Apeks unit works for me. Opening it when I have left it shut and I've kitted up is a pig. I have to identify the right part and push my elbow with the other hand.

Admittedly my shoulders don't flex quite as well as some people's.

Padowan · 27th July 2005, 09:49

I have the AP one on mine, and find I can easily reach up with my left hand and pull the collar forwards to isolate it (which I tend to do once I reach the bottom - further dil additions I do using the button) I also find it no problem to slide it backwards if I want to re-open it.

I found out once, (due to me not paying attention when re-assembling it) that if you spin the the collar round 180 degrees, it actually works in reverse (due to the positioning of the o-rings inside the collar), that pulling it towards the ADV will open it, and pushing it back stops the flow. However, I do not know if this was just a fluke, or whether it's been designed like that properly....

If I wiggle the collar, I can make it leak a bit, but under normal circumstances it's been fine.

cedricverdier · 27th July 2005, 10:42

Quote: (Originally Posted by wizbang)

I use the tank valve to shut off the ADV.

Hi,

I have an ADV shut-off valve fitted on all my rebreathers.

I don't have a second stage fitted on the inboard diluent tank, so my diluent valve is just slightly open. Nevertheless I don't like the idea to use this valve as a way to deal with a free-flowing ADV. My BC inflator is fitted on the same 1st stage and I want to be able to use it at any time. So closing the diluent valve is definitely not my favorite option.

Cheers

DaveB · 27th July 2005, 11:08

I have one for the reasons quoted.

I also shut it when rolling in to prevent the ADV firing as I hit the water.

27th July 2005, 01:37	#1 (permalink)
Chris Go Nude Or Go Home Current Rebreather/s: Megalodon Other Rebreather/s: Inspiration Classic Megalodon Prism Topaz Sport Kiss Join Date: Feb 2005 Location: Perth, Western Australia Posts: 607	Isolator valve on ADV Hi all Just a quick poll. Do you have an Isolator valve on your ADV ? I have been chatting to a few divers that swear by them for 2 reasons 1: If the ADV starts free flowing you can shut it off with a quick flick of the fingers. 2: Shutting the isolator during Deco makes for an easier unit to flush to get the O2 up. Obviously there is a second stage on the Dil bottle so no need for OPV. Your thoughts? Cheers Chris __________________ Megalodon Sorb and Sensors whilst in Australia www.divetub.com.au Diving & Photography @ www.uwphotog.com
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27th July 2005, 01:53	#2 (permalink)
Steve Ladies bring a plate Current Rebreather/s: Megalodon Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Classic Kiss MK 15.X Home Build Join Date: Feb 2005 Location: Perth - Australia Posts: 1,100	Yes for both of the reasons you mention mate. Having never had this option fitted to any of my previous breathers I am only a recent convert but can’t see why I should go back. Nice Poll BTW __________________ WARNING: I contain occasional coarse language, extreme sexual references, nudity, and adult themes, which may offend some people - Usually churchy types.
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27th July 2005, 02:09	#3 (permalink)
wizbang WEB MERMEN Current Rebreather/s: Inspiration Classic Dolphin Home Build Other Rebreather/s: Not Bought Yet Inspiration Vision Evolution Prism Topaz Sport Kiss Classic Kiss Dolphin Home Build Join Date: Feb 2005 Location: Perth Australia Posts: 385	I use the tank valve to shut off the ADV. I usually have the bailout tank connected to the off-board system (and it has a shut off vlave) so I guess I do use one in a manner of speaking. My ADV is not reachable while diving so the tank valve is pretty simple. I do have one on my onboard O2 reg as well as an overpressure relief valve. Shutting off the ADV for O2 flushing just makes life so much easier.
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27th July 2005, 04:47	#4 (permalink)
*Decodiver* Administrator Current Rebreather/s: Megalodon Ouroboros rEvo Other CCR Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Classic Kiss rEvo Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,179	I have an isolator on my ADV on my Meg but do not use one on my Inspiration, preferiing to isolate via the diluent cylinder. One of the reasons for this is that the APD isolator leaks like a sieve. Cheers, Dave Cooper. __________________ CCR/OC Trimix Instructor Trainer CCR Training to Mixed Gas in Switzerland, France, UK & Germany on Megalodon/COPIS-Megalodon/KISS/Sport KISS/Ouroboros/rEvo/Inspiration/Evolution/Sentinel www.zerogravitydiving.com Rebreather World Terms & Conditions
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27th July 2005, 05:09	#5 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Home Build Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Home Build Join Date: Mar 2005 Location: "Da" Bronx Posts: 2,885	Quote: (Originally Posted by Decodiver) I have an isolator on my ADV on my Meg but do not use one on my Inspiration, preferiing to isolate via the diluent cylinder. One of the reasons for this is that the APD isolator leaks like a sieve. Cheers, Dave Cooper. get the ones from oxycheq.. they seal perfectly.. plus they operate in a fashion that makes more sense to me.. slide the isolator towards the inlet (away from outlet) and its closed, slide it towards the outlet and its open.. I think of break connection and make connection To me the apd version (british way ;0) away from the outlet to open is ass backwards.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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27th July 2005, 08:11	#6 (permalink)
*Decodiver* Administrator Current Rebreather/s: Megalodon Ouroboros rEvo Other CCR Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Classic Kiss rEvo Other CCR Join Date: Jan 2005 Location: Geneva Posts: 2,179	Quote: (Originally Posted by jradomski) get the ones from oxycheq.. they seal perfectly.. plus they operate in a fashion that makes more sense to me.. slide the isolator towards the inlet (away from outlet) and its closed, slide it towards the outlet and its open.. I think of break connection and make connection Yeah they're good, I have one on my Meg. Cheers, Dave Cooper. __________________ CCR/OC Trimix Instructor Trainer CCR Training to Mixed Gas in Switzerland, France, UK & Germany on Megalodon/COPIS-Megalodon/KISS/Sport KISS/Ouroboros/rEvo/Inspiration/Evolution/Sentinel www.zerogravitydiving.com Rebreather World Terms & Conditions
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27th July 2005, 08:18	#7 (permalink)
nigelh New Member Current Rebreather/s: Inspiration Vision Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Mar 2005 Location: Brighton, Sussex, UK Posts: 824	Quote: (Originally Posted by jradomski) get the ones from oxycheq.. they seal perfectly.. plus they operate in a fashion that makes more sense to me.. slide the isolator towards the inlet (away from outlet) and its closed, slide it towards the outlet and its open.. I think of break connection and make connection. Agreed but throwing my right hand in a dry suit and a big thick glove over my left shoulder, find the hose and slide my hand forwards feeling the sleeve move means the Apeks unit works for me. Opening it when I have left it shut and I've kitted up is a pig. I have to identify the right part and push my elbow with the other hand. Admittedly my shoulders don't flex quite as well as some people's. __________________ nigelh
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27th July 2005, 09:49	#8 (permalink)
Padowan Proper Boffin Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Feb 2005 Location: Kent, UK. Posts: 518	I have the AP one on mine, and find I can easily reach up with my left hand and pull the collar forwards to isolate it (which I tend to do once I reach the bottom - further dil additions I do using the button) I also find it no problem to slide it backwards if I want to re-open it. I found out once, (due to me not paying attention when re-assembling it) that if you spin the the collar round 180 degrees, it actually works in reverse (due to the positioning of the o-rings inside the collar), that pulling it towards the ADV will open it, and pushing it back stops the flow. However, I do not know if this was just a fluke, or whether it's been designed like that properly.... If I wiggle the collar, I can make it leak a bit, but under normal circumstances it's been fine. __________________ Padowan The future's bright, the future's Yellow .....for now padowan.net - Latest Video: Scapa Flow Rebreather Diving
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27th July 2005, 10:42	#9 (permalink)
cedricverdier S21 M.I.B. Current Rebreather/s: Evolution Megalodon Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Sport Kiss Classic Kiss Join Date: Apr 2005 Location: Worldwide! Posts: 494	Quote: (Originally Posted by wizbang) I use the tank valve to shut off the ADV. Hi, I have an ADV shut-off valve fitted on all my rebreathers. I don't have a second stage fitted on the inboard diluent tank, so my diluent valve is just slightly open. Nevertheless I don't like the idea to use this valve as a way to deal with a free-flowing ADV. My BC inflator is fitted on the same 1st stage and I want to be able to use it at any time. So closing the diluent valve is definitely not my favorite option. Cheers __________________ Cedric Verdier PADI Course Director, ANDI-IANTD-PSAI-TDI-DSAT-DAN-NAUI-CMAS Instructor Trainer Trimix (CCR and OC) and Cave Diving Instructor Trainer www.CedricVerdier.com DIRrebreather member
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27th July 2005, 11:08	#10 (permalink)
DaveB Rebreather World Writer Current Rebreather/s: Evolution Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Belper, Derbyshire, UK Posts: 89	I have one for the reasons quoted. I also shut it when rolling in to prevent the ADV firing as I hit the water. __________________ David
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