New AP Bov

***Beanie*** · 17th October 2007, 09:47

I think Martin said that the shiny bit is Stainless on the proto and will be brass on the production one.

I will see if I can get Martin to do us a nice talk through at DEMA

We can try to get a list of questions if you like

dave t · 17th October 2007, 10:16

The AP BOV also contains the ADV I discussed this with Martin regarding Hypoxic mixes but not sure of his answer.

Kevin told me his BOV would be reduced in size for the production model

Dave

***Louby Lou*** · 17th October 2007, 11:15

Quote: (Originally Posted by dave t)

Kevin told me his BOV would be reduced in size for the production model

Phew... that was one 'ell of a Beast!

Personally, someone little like me would have issues with something that size; but the AP BOV is nice and neat and would suit me down to the ground. Being 5ft and of the female persuasion the the BOV on the Sentinel would be massively restrictive and completely impractical, but the AP one ticks the right boxes. However, the Pelagian one is really dinky!!!

Interested to see how much Kevin reduces the size of the one they had on display at the show.....

CharlieT · 17th October 2007, 11:30

Quote: (Originally Posted by Louby Lou)

Phew... that was one 'ell of a Beast!

Personally, someone little like me would have issues with something that size; but the AP BOV is nice and neat and would suit me down to the ground. Being 5ft and of the female persuasion the the BOV on the Sentinel would be massively restrictive and completely impractical, but the AP one ticks the right boxes. However, the Pelagian one is really dinky!!!

Interested to see how much Kevin reduces the size of the one they had on display at the show.....

I understand Kevin is selling a support unit that will enable all divers, particularly those only 5ft and female, to rest their weary heads whilst doing pre-dive stuff and waiting on the diveboat bench for slack

It sounds an essential extra at the moment

Charlie

opimoby · 17th October 2007, 13:15

I wonder how easy it would be to adapt the new APD BOV to a Interspiro AGA FF mask? That way you have a lovely BOV with the added safety of full face mask for those rare moments.......

colinicky · 17th October 2007, 16:11

Quote: (Originally Posted by Ben Field)

The light wasn't so good such that I could see into the mouthpiece clearly and describe how it works exactly, but the yellow marker was seemed to line up to the open and closed positions. When in OC mode a small spirng was visible, I wondered wether turning to OC was more about opening the exhaust than anything else?

This has been bothering me all day untill I came up with the question

If turning the inner barrel only opens an exhaust for OC then that in itself does not isolate the CC side of the loop ,therefore if there is no isolation then it is not a BOV in my understanding as you could still get ingress of caustic or water ?

***Beanie*** · 17th October 2007, 16:15

Quote: (Originally Posted by colinicky)

This has been bothering me all day untill I came up with the question

If turning the inner barrel only opens an exhaust for OC then that in itself does not isolate the CC side of the loop ,therefore if there is no isolation then it is not a BOV in my understanding as you could still get ingress of caustic or water ?

No it seals the loop no idea how but it does

there are at least 3 positions

cc
oc
closed

not sure how the adv bit fits in

dave t · 17th October 2007, 16:22

When its in CC mode there is a small poppet valve that allows gas to be drawn from the OC side. As you start to get negative pressure in the loop the valve will open and gas will be drawn in. Not sure of the actual config but thats the general idea, whether you can switch that facility off was not so clear to me!

Dave

DanFountain · 17th October 2007, 18:36

Bill Stone patented a combination mouthpiece / ADV back in 1992, but I don't think it ever made it onto production Cis-Lunars. Take a look at Breathing apparatus mouthpiece - Google Patents to see one way of doing this. I suspect the AP BOV works similarly but with the valve in a different axis.

-Dan

colinicky · 17th October 2007, 19:53

Thanks for the link Dan & that is the same idea as Golum etc Bov's were you have a Ball valve which rotates across the barrel but the AP one rotates with the barrel of the DSV which was why I asked in my original post if there was a tube mounted across the inner barrel that came into line with the OC 2nd stage & the mouthpiece when the barrel was turned .

17th October 2007, 09:47	#11 (permalink)
*Beanie* Gallery Administrator Current Rebreather/s: Inspiration Classic Other Rebreather/s: Inspiration Vision Join Date: Jan 2005 Location: In da house! yeah baby! Posts: 3,312	Re: New AP Bov I think Martin said that the shiny bit is Stainless on the proto and will be brass on the production one. I will see if I can get Martin to do us a nice talk through at DEMA We can try to get a list of questions if you like __________________ Beanie Gallery Admin & Library Assistant. www.outlawdivers.org.uk www.beandiving.co.uk www.beanengineering.co.uk
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17th October 2007, 10:16	#12 (permalink)
dave t RBW Member Current Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Classic Kiss Dolphin Ray Azimuth Home Build Other Rebreather/s: Dolphin Ray Azimuth Home Build Join Date: May 2005 Location: UK Posts: 674	Re: New AP Bov The AP BOV also contains the ADV I discussed this with Martin regarding Hypoxic mixes but not sure of his answer. Kevin told me his BOV would be reduced in size for the production model Dave
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17th October 2007, 11:15	#13 (permalink)
*Louby Lou* XLVI WC! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Feb 2005 Location: Roman Corinium! Posts: 1,049	Re: New AP Bov Quote: (Originally Posted by dave t) Kevin told me his BOV would be reduced in size for the production model Phew... that was one 'ell of a Beast! Personally, someone little like me would have issues with something that size; but the AP BOV is nice and neat and would suit me down to the ground. Being 5ft and of the female persuasion the the BOV on the Sentinel would be massively restrictive and completely impractical, but the AP one ticks the right boxes. However, the Pelagian one is really dinky!!! Interested to see how much Kevin reduces the size of the one they had on display at the show..... __________________ Miss Lou x Use of RBW is subject to the Rebreatherworld Terms and Conditions - Please read! Outlaw Divers - Sssh we're diving! You heff vays uff dealink vis zem, oh Miss RBW Admin! - Rob Davie Feb 06
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17th October 2007, 11:30	#14 (permalink)
CharlieT Custom Title Allowed! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Join Date: Nov 2005 Location: London Posts: 449	Re: New AP Bov Quote: (Originally Posted by Louby Lou) Phew... that was one 'ell of a Beast! Personally, someone little like me would have issues with something that size; but the AP BOV is nice and neat and would suit me down to the ground. Being 5ft and of the female persuasion the the BOV on the Sentinel would be massively restrictive and completely impractical, but the AP one ticks the right boxes. However, the Pelagian one is really dinky!!! Interested to see how much Kevin reduces the size of the one they had on display at the show..... I understand Kevin is selling a support unit that will enable all divers, particularly those only 5ft and female, to rest their weary heads whilst doing pre-dive stuff and waiting on the diveboat bench for slack It sounds an essential extra at the moment Charlie
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17th October 2007, 13:15	#15 (permalink)
opimoby New Member Current Rebreather/s: Evolution Other Rebreather/s: MK 15.X Join Date: Jul 2007 Location: Port Douglas, Australia Posts: 68	Re: New AP Bov I wonder how easy it would be to adapt the new APD BOV to a Interspiro AGA FF mask? That way you have a lovely BOV with the added safety of full face mask for those rare moments....... __________________ If you build it...they will come..
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17th October 2007, 16:11	#16 (permalink)
colinicky RBW Member Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Mar 2005 Location: uk Posts: 682	Re: New AP Bov Quote: (Originally Posted by Ben Field) The light wasn't so good such that I could see into the mouthpiece clearly and describe how it works exactly, but the yellow marker was seemed to line up to the open and closed positions. When in OC mode a small spirng was visible, I wondered wether turning to OC was more about opening the exhaust than anything else? This has been bothering me all day untill I came up with the question If turning the inner barrel only opens an exhaust for OC then that in itself does not isolate the CC side of the loop ,therefore if there is no isolation then it is not a BOV in my understanding as you could still get ingress of caustic or water ? __________________ Colin I trust my rebreather completely , I just don't trust the user onwards & downwards
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17th October 2007, 16:15	#17 (permalink)
*Beanie* Gallery Administrator Current Rebreather/s: Inspiration Classic Other Rebreather/s: Inspiration Vision Join Date: Jan 2005 Location: In da house! yeah baby! Posts: 3,312	Re: New AP Bov Quote: (Originally Posted by colinicky) This has been bothering me all day untill I came up with the question If turning the inner barrel only opens an exhaust for OC then that in itself does not isolate the CC side of the loop ,therefore if there is no isolation then it is not a BOV in my understanding as you could still get ingress of caustic or water ? No it seals the loop no idea how but it does there are at least 3 positions cc oc closed not sure how the adv bit fits in __________________ Beanie Gallery Admin & Library Assistant. www.outlawdivers.org.uk www.beandiving.co.uk www.beanengineering.co.uk
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17th October 2007, 16:22	#18 (permalink)
dave t RBW Member Current Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Classic Kiss Dolphin Ray Azimuth Home Build Other Rebreather/s: Dolphin Ray Azimuth Home Build Join Date: May 2005 Location: UK Posts: 674	Re: New AP Bov When its in CC mode there is a small poppet valve that allows gas to be drawn from the OC side. As you start to get negative pressure in the loop the valve will open and gas will be drawn in. Not sure of the actual config but thats the general idea, whether you can switch that facility off was not so clear to me! Dave
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17th October 2007, 18:36	#19 (permalink)
DanFountain This is my custom title! Current Rebreather/s: Home Build Other Rebreather/s: Home Build Join Date: Dec 2005 Location: Lake Superior Posts: 113	Re: New AP Bov Bill Stone patented a combination mouthpiece / ADV back in 1992, but I don't think it ever made it onto production Cis-Lunars. Take a look at Breathing apparatus mouthpiece - Google Patents to see one way of doing this. I suspect the AP BOV works similarly but with the valve in a different axis. -Dan __________________ Try not. Do - or do not. There is no try. -Yoda
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17th October 2007, 19:53	#20 (permalink)
colinicky RBW Member Current Rebreather/s: Inspiration Vision Other Rebreather/s: Inspiration Classic Join Date: Mar 2005 Location: uk Posts: 682	Re: New AP Bov Thanks for the link Dan & that is the same idea as Golum etc Bov's were you have a Ball valve which rotates across the barrel but the AP one rotates with the barrel of the DSV which was why I asked in my original post if there was a tube mounted across the inner barrel that came into line with the OC 2nd stage & the mouthpiece when the barrel was turned . __________________ Colin I trust my rebreather completely , I just don't trust the user onwards & downwards
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