First stages

***jradomski*** · 1st February 2006, 01:14

Quote: (Originally Posted by Crazyduck)

WHOAAA there...
Are you runnig O2 through the M1?

Atomics states that their reg is good to 80% ?
http://www.atomicaquatics.com/ComparisonChart.html

I have had all kinds of nightmares of one of these burning...

Any thoughts or experience you have with the unit would be appricated.

Regards, Andrew

Monel is one of the most compatible o2 materials you can use.. its more compatible than just about anything except copper..
You wont see them ever claim 100%, and the M1 is the highest rating they claim..

The titanium regs are a whole different issue..

lbihler · 1st February 2006, 05:52

Hi everybody,

Sorry for a very beginner question but many of you seem to be using APEKS DS4. These are using APEKS dry sealed hydristatic pressure system which if I understood well, gives a higher intermediate pressure at depth. On the O2 side in a CCR context isn't there a risk for this pressure to be too strong for the solenoid ?

abowie · 1st February 2006, 07:00

Quote: (Originally Posted by jradomski)

The titanium regs are a whole different issue..

I suspect that's maybe where the confusion has come in.

Pelagian · 1st February 2006, 14:58

Quote: (Originally Posted by Chris)

Hi Seb
Are you sure that’s right on the Mk2’s?
SMI are still using them on the Prism’s and I doubt they would be if they cant get O2 parts for them.

I spoke to ScubaPro here in Australia and they confirmed a different seat but said nothing about no longer making them.

Cheers
Chris

I'll double check with Scubapro, but to my knowledge the standard seat on an MK 2+ is Nylon. They used to make the kits for em(Teflon/Kel-F seat and 2 o-rings) but have stopped.

It may be the case that they ship as standard with Teflon type seats now. That's the only issue, as the psiton stem o-ring is generic size that can be found easily in EPDM or Viton.

If it is the case then I may consider switching back them. Don't get me wrong I love the MK 20/25's(I own 7 of em) but the MK 2's will be just that bit more robust and the performance is perfect for CCR where 2,000 lites/min flow is more than enough.

Cheers

Seb

Explorer · 15th March 2006, 16:34

Scubapro has come out with the Mk 17? It has four LP and two HP ports. Any thoughts about this first stage for your Meg?

mattmexico · 30th March 2006, 01:30

yo

MK2 right now and will converto to Dive Rite next week on my Meg, my Optima has Dive Rite on them for over a year. On the Cis I we had MK 25, on my Inspiration I had Apeks.

Matt

rdmmdr · 30th March 2006, 02:38

i used virgin mk20's in my rig and never had a problem' but i always used a flow restrictor to the hp guage, after the fire.

rick miller

Gibbon · 30th March 2006, 02:57

My meg has just arrived with Mk2+ regs.

Personally I am not concerned about O2 with the Mk2+ regs as I have been using them as stage regs anyway and know that the seat is teflon.

I am curious about what will happen as the ambient pressure approaches that of the the Intermediate Pressure as the Mk2+ are unbalanced regs.

Obviously the gas flow required is going to be way less than on OC and I have used Mk2+ at around 80m on OC without any problem.

Does anyone know what happens?

1st February 2006, 01:14	#31 (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: 2,998	Re: First stages Quote: (Originally Posted by Crazyduck) WHOAAA there... Are you runnig O2 through the M1? Atomics states that their reg is good to 80% ? http://www.atomicaquatics.com/ComparisonChart.html I have had all kinds of nightmares of one of these burning... Any thoughts or experience you have with the unit would be appricated. Regards, Andrew Monel is one of the most compatible o2 materials you can use.. its more compatible than just about anything except copper.. You wont see them ever claim 100%, and the M1 is the highest rating they claim.. The titanium regs are a whole different issue.. __________________ 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. Last edited by jradomski : 1st February 2006 at 01:16.
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1st February 2006, 05:52	#32 (permalink)
lbihler New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Jan 2006 Location: Bangkok Posts: 56	Re: First stages Hi everybody, Sorry for a very beginner question but many of you seem to be using APEKS DS4. These are using APEKS dry sealed hydristatic pressure system which if I understood well, gives a higher intermediate pressure at depth. On the O2 side in a CCR context isn't there a risk for this pressure to be too strong for the solenoid ?
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1st February 2006, 07:00	#33 (permalink)
abowie Fighting Girl Current Rebreather/s: Sport Kiss Other Rebreather/s: Join Date: May 2005 Location: Land of Oz Posts: 574	Re: First stages Quote: (Originally Posted by jradomski) The titanium regs are a whole different issue.. I suspect that's maybe where the confusion has come in. __________________ Andrew Bowie Rebreather-friendly Buddy
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1st February 2006, 14:58	#34 (permalink)
Pelagian Multi-Circuit Meg Monkey! Current Rebreather/s: Megalodon Other Rebreather/s: Inspiration Classic Inspiration Vision Evolution Sport Kiss Optima Join Date: Feb 2005 Location: Leeds, England Posts: 281	Re: First stages Quote: (Originally Posted by Chris) Hi Seb Are you sure that’s right on the Mk2’s? SMI are still using them on the Prism’s and I doubt they would be if they cant get O2 parts for them. I spoke to ScubaPro here in Australia and they confirmed a different seat but said nothing about no longer making them. Cheers Chris I'll double check with Scubapro, but to my knowledge the standard seat on an MK 2+ is Nylon. They used to make the kits for em(Teflon/Kel-F seat and 2 o-rings) but have stopped. It may be the case that they ship as standard with Teflon type seats now. That's the only issue, as the psiton stem o-ring is generic size that can be found easily in EPDM or Viton. If it is the case then I may consider switching back them. Don't get me wrong I love the MK 20/25's(I own 7 of em) but the MK 2's will be just that bit more robust and the performance is perfect for CCR where 2,000 lites/min flow is more than enough. Cheers Seb __________________ 'Because... I was Inverted!'
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15th March 2006, 16:34	#35 (permalink)
Explorer I will teach you a..... Current Rebreather/s: Evolution Megalodon Other Rebreather/s: Join Date: Sep 2005 Location: Alberta, Canada Posts: 772	Re: First stages Scubapro has come out with the Mk 17? It has four LP and two HP ports. Any thoughts about this first stage for your Meg? __________________ 20 dwarves, 20 dwarves, 20 dwarves took turns doing handstands on the carpet
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30th March 2006, 01:30	#36 (permalink)
mattmexico Rebreather World Writer Current Rebreather/s: Megalodon Classic Kiss Optima RB80 / Clone Other Rebreather/s: Inspiration Classic Evolution Prism Topaz Sport Kiss RB80 / Clone Join Date: Aug 2005 Location: Mexico, Q.Roo, Playa del Carmen Posts: 764	Re: First stages yo MK2 right now and will converto to Dive Rite next week on my Meg, my Optima has Dive Rite on them for over a year. On the Cis I we had MK 25, on my Inspiration I had Apeks. Matt __________________ N 20' 37.617' W 87' 04.693' www.andreaswmatthes.com
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30th March 2006, 02:38	#37 (permalink)
rdmmdr designer of death Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Mar 2006 Location: kerman,california Posts: 372	Re: First stages i used virgin mk20's in my rig and never had a problem' but i always used a flow restrictor to the hp guage, after the fire. rick miller
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30th March 2006, 02:57	#38 (permalink)
Gibbon Southern Monkey Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Aug 2005 Location: East Devon Posts: 226	Re: First stages My meg has just arrived with Mk2+ regs. Personally I am not concerned about O2 with the Mk2+ regs as I have been using them as stage regs anyway and know that the seat is teflon. I am curious about what will happen as the ambient pressure approaches that of the the Intermediate Pressure as the Mk2+ are unbalanced regs. Obviously the gas flow required is going to be way less than on OC and I have used Mk2+ at around 80m on OC without any problem. Does anyone know what happens?
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