Cold / deep regs and tech computer

[texdiveguy]

I have a Mares reg (MR12) that I unhesitatingly rec dive to 100’ – albeit in warmer waters -without any problem whatsoever. But, it is primarily my ‘pool reg’ and I guess I never really think of it as a ‘serious’ reg.

IMO!! The MR12 is a workhorse.....have used one for dives well below rec limits and in chilly waters with no problems.....it is a great all round reg.. But I also don't like or use He computers for 'mix' diving either.

 

[xiSkiGuy]

When you weary of opinions and want facts:

U.S. Navy Approved Diving Equipment list

It's good to know that J-valves and J-valve manifolds are still on the active purchase list. . .

 

[electric_diver]

IMO!! The MR12 is a workhorse.....:

I agree. The MR12s are bullet proof. I've used mine in 28F water at 140 feet in a hard working dive with absolutely no issues. I've used them 200 feet of warmer water as well.

 

[TheStosh]

This is my scratch pad of links and data I've been gathering.
I have not found any regs officially rated for breathing below 162 feet.
Do any manufactures come out and say they work fine to 300 feet, or are you on your own to find out how deep you can expect them to work?

http://www.mares.com
http://www.mares.com/download_regulators.php?region=USA

MR32 ABYSS
water temperature below +10°C (50°F).
To use MARES regulators in cold water conditions, always install the CWD
(Cold Water Diving) kit.
Maximum depth: 50 m / 162 feet.
Pressure max 232 bar (international YOKE CGA 850 adapter)
Pressure max 300 bar (DIN 477/50 screw)
It is fitted with a preferential intermediate pressure port for connection
to the primary second stage, plus 3 other LP ports and 2 HP ports
with 7/16" UNF thread.


PROTON ICE EXTREME - PROTON ICE EXTREME OCTOPUS
water temperature below +10°C (50°F).Comes with the CWD (Cold Water Diving)
kit.
Approved for U.S. Navy use in water 29°F / -1.7°C and above.
Maximum depth: 50 m / 162 feet.
Pressure max 232 bar (international YOKE CGA 850 adapter)
Pressure max 300 bar (DIN 477/50 screw)
It is fitted with a preferential intermediate pressure port for connection
to the primary second stage, plus 3 other LP ports and 2 HP ports
with 7/16" UNF thread.


Atomic Aquatics M1
environmentally sealed to prevent entry of water or contaminants. The
second stage features a thermal heat sink and improved super-dry exhaust
valve.
Nitrox ready: Factory ready for Nitrox to 50%, or oxygen mixes up to 80%
when special guidelines are followed.
MAX-PRESSURE RATING 4350 PSI (300 bar) with DIN connection
Exceeds requirement for European CEN250 (1.5 joules/liter @ 50 meters) and
USN group A (.14 kg.m/liter @ 200 feet at 62.5 RMV)
Balanced piston design
AFC automatic flow control
http://www.atomicaquatics.com/PDF/Atomicmanual.pdf


http://www.zeagle.com
ZX/ Flathead-VI
Dry Environmental Seal with Hydro Transmitter
Balanced Diaphragm
4 Low Pressure Ports (3/8”-24 UNF)
2 High Pressure Ports (7/16”-20 UNF)
Nitrox Ready
http://www.zeagle.com/clientuploads/datasheets/FHVI.pdf
http://www.zeagle.com/index.php?submenu=Regulators&src=gendocs&link=regcomparison

http://www.apeks.co.uk
http://www.omsdive.com/sitemap.html

Quick links to some online stores to compare prices:
http://www.scubatoys.com/store/Scuba_Regulators3.asp
http://www.blueseaadventures.com/store/regulators.htm
http://a1scuba.divebiz.net/index.php?main_page=index&cPath=500084_500296
http://www.leisurepro.com/Cat/Context_954/Regulators/1159.html
http://hollywoodivers.com/mm5/merchant.mvc?Screen=CTGY&Store_Code=H&Category_Code=RARA
http://www.divers-supply.com/Scuba-Regulator-and-Octopus-s/2.htm
http://www.diveriteexpress.com/regs/

 

[Mike Manthe]

Hi,

I have not found any regs officially rated for breathing below 162 feet.
Do any manufactures come out and say they work fine to 300 feet, or are you on your own to find out how deep you can expect them to work?

Apeks XTX200 and XTX50 passed the NORSOK 200m test. http://www.apeks.co.uk/newsarticle.asp?Title=Apeks regulators meet 200 metre NORSOK Standard

 

[Thalassamania]

I'll come out and say that Mares, Poseidon, Oceanic and ScubaPro regulators work just fine below 300 feet.

 

[dl348]

Don't forget about the DiveRite RG2500, it works very well also.

 

[tonka97]

...

I'm looking for suggestions for popular regs for cold diving ( 40 degrees and lower) and for deep diving ( 200' - 300')....

According to Undercurrent, July 2007:

"After testing of multiple regulators, NOAA found Oceanic's Delta IV to be the most reliable".

"It consistently came up first for meeting all our criteria, and it won't freeze up in cold water", says Lieutenant Eric Johnson of the NOAA Diving Program.

The article continues:
"NOAA bought 350 of the regulators and now requires its 500 divers to use that model when diving in water temperatures of 50 degrees or less."

 

[Hoyden]

This is my scratch pad of links and data I've been gathering.
I have not found any regs officially rated for breathing below 162 feet.
Do any manufactures come out and say they work fine to 300 feet, or are you on your own to find out how deep you can expect them to work?

Poseidon Xstream is approved to 200 meters. Poseidon

 

[khacken]

I am in the same situation here. I already have an Atomic B2 for my single tank setup, but I need to get two more for the doubles. Would getting an atomic M1 for primary and Z2 for secondary be a good choice? Or will the Z2 just have too many problems with the cold? I don't really plan on diving in temps below 50F, but you never know what the future holds.