Prism 2 BOV

bazSXD

bazSXD

Member
Guys ... just got my hands on the new Prism 2 BOV and I have a few questions straight off:

The BOV only came with a single plastic hose spigot and o-ring, this is the part that goes into the rubber breathing hose and is then locked in place on the BOV by the chrome locking ring. Hence I can only connect one breathing loop hose to the BOV, not much good. Is this normal to have only one spigot supplied if so what's the part number to order another ???

The LP hose fitting ... well what can I say, how dumb is that design, you can't remove the LP hose without disconnecting the inhale breathing loop ... makes you wonder.

The HUD holder cheap and nasty to say the least but if it works so be it.

No manual in the box, can I get a manual for the BOV covering servicing etc. ???

The BOV came with a Omniswivel PS-LP-1 right angle 3/8" F to 3/8" M ... what's it for ???

In general it looks very nice but without the hose spigot I can't really tell. Not sure about the internal barrel cutting down about 20% of the breathing loop gas flow, again we will see.

What are others first impressions ???

regards Baz
 
seems like you figured out the plumbing so....

The LP fitting AT the BOV is Genius, it will not back off and can be installed finger tight. Works perfectly.

The HUD holder is -by far- better than the original, use a Number 21 (or near that size) o ring and it stays in place very well.

Manual online, you got that.

For the Swivel, the manual shows the install process, but you can move things around.


You will want to detune it a bit as it is very touchy when out of your mouth.

Gas flow works great at ~300 for me.

This is a very well made BOV, it does what it should.

Have fun with it-Eric




bazSXD said:
Guys ... just got my hands on the new Prism 2 BOV and I have a few questions straight off:

The BOV only came with a single plastic hose spigot and o-ring, this is the part that goes into the rubber breathing hose and is then locked in place on the BOV by the chrome locking ring. Hence I can only connect one breathing loop hose to the BOV, not much good. Is this normal to have only one spigot supplied if so what's the part number to order another ???

The LP hose fitting ... well what can I say, how dumb is that design, you can't remove the LP hose without disconnecting the inhale breathing loop ... makes you wonder.

The HUD holder cheap and nasty to say the least but if it works so be it.

No manual in the box, can I get a manual for the BOV covering servicing etc. ???

The BOV came with a Omniswivel PS-LP-1 right angle 3/8" F to 3/8" M ... what's it for ???

In general it looks very nice but without the hose spigot I can't really tell. Not sure about the internal barrel cutting down about 20% of the breathing loop gas flow, again we will see.

What are others first impressions ???

regards Baz
Click to expand...
 
Eric mate .... I don't know what BOV you've got but, the one I have will not allow you to even install the LP hose with the chrome collar in place.

Your comment "The LP fitting AT the BOV is Genius, it will not back off and can be installed finger tight. Works perfectly." is in my case - I am afraid to say utter dribble.

So much so, that I have the rep coming in to the store on Tuesday to confirm this along with other matters.

Maybe I've got a bad one but if not then your dead wrong based on the one I have.

regards Baz
 
bazSXD said:
So much so, that I have the rep coming in to the store on Tuesday to confirm this along with other matters.

regards Baz
Click to expand...

Baz, Can you ask him what the WOB is in closed and opencircuit modes as the manual appears devoid of any unmanned testing data.

Does it meet EN250? I am possibly interested in buying one from you for use on a divers left to right flow loop if you can provide the WOB data with it.

5.10.1 I understand that the Explorer if not P2 is going for CE testing which requires the facepiece to minimise the ingress of water during normal use and in the event of a diver falling unconscious or having a convulsion. How does the Hollis BOV achieve this?
5.10.2 What sort of facepiece harness (gag strap etc) is the Hollis BOV supplied with?

Regards
Brad
 
Brad_Horn said:
Does it meet EN250? I am possibly interested in buying one from you for use on a divers left to right flow loop if you can provide the WOB data with it.
Click to expand...

According to their site it does: http://www.hollisgear.com/prodview.asp?id=168
and the manual p5

EN250:2000 testing of regulators occurs at two water temperatures; 50°F/10°C and below 39°F/4°C.
Regulators marked >50°F / >10°C are approved for use in water 50°F/10°C or warmer.

Another source online: It is rated to EN14143, the rebreather standard, EN13949, the nitrox standard and EN250, the regulator standard.
 
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bazSXD said:
Eric mate .... I don't know what BOV you've got but, the one I have will not allow you to even install the LP hose with the chrome collar in place.

Your comment "The LP fitting AT the BOV is Genius, it will not back off and can be installed finger tight. Works perfectly." is in my case - I am afraid to say utter dribble.

So much so, that I have the rep coming in to the store on Tuesday to confirm this along with other matters.

Maybe I've got a bad one but if not then your dead wrong based on the one I have.

regards Baz
Click to expand...

Baz,
I think Eric means te same thing, but from a glass half full perspective, you can put the fitting on finger tight, then put the hose and chrome collar on and it won't come undone.

Anyway, what's it like apart from that and a lack of fittings?

Funny the mention of it not being supported for other rebreathers, when it's an option on the Kiss now?

Cheers
Dave


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bazSXD said:
Eric mate .... I don't know what BOV you've got but, the one I have will not allow you to even install the LP hose with the chrome collar in place.

Your comment "The LP fitting AT the BOV is Genius, it will not back off and can be installed finger tight. Works perfectly." is in my case - I am afraid to say utter dribble.

So much so, that I have the rep coming in to the store on Tuesday to confirm this along with other matters.

Maybe I've got a bad one but if not then your dead wrong based on the one I have.

regards Baz
Click to expand...

ok, let's step back, are you putting this on a Prism2?
Did you get this item brand new?
If someone had it before you, they may have switched the collars. The original collar on the hose inlet side is too thick for the BOV LP feed hose.
The LP feed can be switched to the other side (as on the Explorer) and so can the collars.
The BOV works as it is intended, there must be something that we are not getting here.
 
And you mention -not exposing the mushroom valves, examining the mushroom valves is directed in the pre dive checklist.
 
ok, let's step back, are you putting this on a Prism2?

No its going on a JJ for the moment but will be tried on other units also ... hence the problem with Hollis only supplying one spigot

Did you get this item brand new?

Brand spanker straight out the box, one of the very newest models after the recall.

If someone had it before you, they may have switched the collars. The original collar on the hose inlet side is too thick for the BOV LP feed hose.

Magic you admit a problem, the unit I have has this very same problem and as I said it is the very latest model.

The LP feed can be switched to the other side (as on the Explorer) and so can the collars.

Collars are not an issue but, looking at the BOV I would say you are wrong about this also, the moulding is the same each side but I can't find any reference to this option in the BOV manual.

The BOV works as it is intended, there must be something that we are not getting here.

Don't know ... need another spigot to dive it.

Sounds like you have not got the very latest BOV ???

regards Baz
 
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ok, so a JJ is not a Prism 2, so you are on your own, you should have looked into that first.


There is no magic, there is no problem, there is your misconception of how the unit works and that you want to do something else with it.
The Original collars-the ones that come on the DSV-are different than the collars you have now. There was never a different set of collars for the BOV-you need to understand that fact. the collars you have now are doing EXACTLY what they are designed to do. I am sorry if this is not what you want them to do, but that is not a design flaw-that is user error.

I have switched the input on the BOV from right to left, and then back again. It does exactly what I said it will do. even if it is not stated in the manual. I did this in an effort to try to use offboard gas as the BOV input. The BOV is not intended to do this and therefore this is not mentioned in the manual.

There is only one BOV and it is a different color for the Explorer and the Prism 2, the plumbing is different for the units so the hoses that come with the BOV reflect that.

Good luck with your BOV, and the JJ, sounds like you will need it.
 
Have you actually read the manual ???

Page 6 clear states that the BOV is to be used with offboard gases and page 10 clearly shows that to fit a LP hose to the BOV you have to remove the collar and the breathing loop from the BOV which conforms exactly what I've said all along

Fact ... you have to dismantle the BOV from the loop to wash the breathing loop out because the LP hose cannot be disconnected while the collar is attached. This is not normal for other CCR's. It is a pain to have to do this just because the collar is too fat, couple this with problems offitting a shut off valve if you want one fitted and you have a case of bad design, plain and simple.

I honestly don't know why you have such a wild hair up your ass over this ???

The BOV seems okay and once I dive it I will be in such a position to give an educated assessment of its functionality. As it stands this BOV is the only one I know of that requires the breathing loop to be disconnected from the unit as described above, to allow you to wash the loop. It seems you can live with that. I personally feel that its such a small error that it should be fixed.

Thanks to everyone for the help in working out what i have now to do to get this BOV working on other units.

regards Baz
 
Yes, I have read the manual, I believe you have an issue with comprehending what I am writing. This may be because you singularly focused on what you are trying to do and not stepping back and looking at this from the manufacturer's and Prism 2 user's point of view. I never said that it is not designed to use with offboard gasses. I said that I switched it from side to side and THAT is not enumerated or explained or recommended in the BOV manual. Then, in my reply, I stated WHY I switched the input to the other side and then back again.

The FACT that this BOV uses the width of the collars as a retaining device, to me, is brilliant.
The problem here, as I see it, is that you would like to dismantle the loop without exposing the mushroom valves. This is odd, seeing that you must inspect them in order to follow the checklists.

Normal seems to be in the eye of the beholder, I can't help you with that.
I have no issue with you or what you are trying to do, my issue was not having all the information regarding your needs and preconceptions. I was only trying to help.

The BOV does not need to be fixed, it is your contention that it needs to be altered.



bazSXD said:
Have you actually read the manual ???

Page 6 clear states that the BOV is to be used with offboard gases and page 10 clearly shows that to fit a LP hose to the BOV you have to remove the collar and the breathing loop from the BOV which conforms exactly what I've said all along

Fact ... you have to dismantle the BOV from the loop to wash the breathing loop out because the LP hose cannot be disconnected while the collar is attached. This is not normal for other CCR's. It is a pain to have to do this just because the collar is too fat, couple this with problems offitting a shut off valve if you want one fitted and you have a case of bad design, plain and simple.

I honestly don't know why you have such a wild hair up your ass over this ???

The BOV seems okay and once I dive it I will be in such a position to give an educated assessment of its functionality. As it stands this BOV is the only one I know of that requires the breathing loop to be disconnected from the unit as described above, to allow you to wash the loop. It seems you can live with that. I personally feel that its such a small error that it should be fixed.

Thanks to everyone for the help in working out what i have now to do to get this BOV working on other units.

regards Baz
Click to expand...
 
bazSXD said:
The LP feed can be switched to the other side (as on the Explorer) and so can the collars.

Collars are not an issue but, looking at the BOV I would say you are wrong about this also, the moulding is the same each side but I can't find any reference to this option in the BOV manual.
Click to expand...

"NOTE: The Hollis BOV currently ships with the LP inlet positioned on the diver's left hand side. This is to allow for convenient routing of a LP hose from the onboard diluent tank. A Hollis Service Technician can reverse this if needed for you [sp] diving application." Page 8 of the BOV manual.
 
yes, Charlie has it. There is no instruction or explanation for the user, but it is enumerated. You Are correct Charlie, my mistake.
 
I understand that the breathing hose rings are the weights to allow the BOV to float at eye level. That'why they are so fat, hence the need to remove the ring and the breathing hose to allow the diver to remove the LP hose feed for the second stage. Because of this design it also acts as a blocker/safety so that you cannot pull the LP hose even if the collar isn't screwed all the way in.
If you wanted to be able to remove the 2nd stage LP hose, you'd need to make a slimmer ring on that side. But then the BOV won't be the correct weight and it'll float above the diver's head.
Does that make sense?
Philippe
 
bazSXD said:
I honestly don't know why you have such a wild hair up your ass over this ???
Click to expand...

It think it comes with the unit's spares kit, but I'm not too sure it's not mentioned in the manual. Nor is there a clear schematic for this. I understand not everyone does it during their training course, but they are welcome to call their instructor afterwards to get clarification on these hairs, be they ingrown, grey, suffering male pattern baldness or permed.

:afro: :scared: :afro: :scared: :afro: :scared:​


cheers

Andy
 
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alexasigno said:
According to their site it does: http://www.hollisgear.com/prodview.asp?id=168
and the manual p5

EN250:2000 testing of regulators occurs at two water temperatures; 50°F/10°C and below 39°F/4°C.
Regulators marked >50°F / >10°C are approved for use in water 50°F/10°C or warmer.

Another source online: It is rated to EN14143, the rebreather standard, EN13949, the nitrox standard and EN250, the regulator standard.
Click to expand...
Alex, Thanks mate, no where however does it say the Hollis BOV is certified to EN250. A reg can meet the breathing requirements of EN250 with 3J/L at 50m on air which in comparison to some OC regs http://www.divernet.com/Diving_Gear/diver_tests/279586/regulator_scubapro_a700_mk25.html is quite poor. Is bailing off a potentially lower WOB loop to a higher WOB BOV to only need to go to a lower WOB OC reg a safe thing?

Also what temp are the Hollis BOVs marked for use down to? If its only 10'C, as opposed to the more typical EN250 4'C or lower USN temp http://johnclarkeonline.com/2012/08/02/cold-water-scuba-regulator-testing-u-s-navy-vs-en-250/ one would think that quite limiting, no?

What does "rating" something to EN14143 which was superseded by EN14143:2003 in 2003 and EN14143:2013 in 2013 as a standard actually mean?

Regards
Brad
 
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