Valves

Divein · 11th July 2006, 21:50

Thinking of converting my Dolphin. Can anyone tell me what is the difference between a Jetsam KISS valve and a Hydrogom valve please? What is the cost of a KISS valve?

Any other alternatives for O2 injection?

Thanks for any help.

zepp · 12th July 2006, 09:14

hi there.
I have both, I use a Hydrogom on my homebuild (see my gallery) and have a classic KISS. To be honest there is little difference between them, they both work the same way, but I prefer the Hydrogom, it is a well made piece of kit (I'm not saying the Jetsam one isn't), much heavier than the Jetsam. There are 3 versions of the jetsam that I know of, the original (cylindrical), the newer one (waisted) and now the moulded version. The earlier version uses a lower IP, therfore has a shallower depth limit. Someone correct me if I am wrong

Hope this helps
jason

decoweenie · 12th July 2006, 10:32

Quote: (Originally Posted by zepp)

...The earlier version uses a lower IP, therfore has a shallower depth limit...

Not necessary.

Very, very early units with the earlier version has 0.004" orifice thus the IP is usually set low to keep the O2 flow at nominal metabolic rate.

However, the 0.0035" orifice came out soon after and most people changed to it to gain max depth.

The smaller orifice then became the standard orifice on the later versions of the valve body.

In other words, the valve body doesn't dictate the max depth, but rather the O2 IP.

11th July 2006, 21:50	#1 (permalink)
Divein RBW Member Current Rebreather/s: Dolphin Home Build Other Rebreather/s: Dolphin Home Build Join Date: Jun 2006 Location: Yorkshire Posts: 107	Valves Thinking of converting my Dolphin. Can anyone tell me what is the difference between a Jetsam KISS valve and a Hydrogom valve please? What is the cost of a KISS valve? Any other alternatives for O2 injection? Thanks for any help.
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12th July 2006, 09:14	#2 (permalink)
zepp "Dyson with Death" daddy Current Rebreather/s: Classic Kiss Other CCR Home Build Other Rebreather/s: Not Bought Yet Other CCR Home Build Join Date: Sep 2005 Location: midlands Posts: 284	Re: Valves hi there. I have both, I use a Hydrogom on my homebuild (see my gallery) and have a classic KISS. To be honest there is little difference between them, they both work the same way, but I prefer the Hydrogom, it is a well made piece of kit (I'm not saying the Jetsam one isn't), much heavier than the Jetsam. There are 3 versions of the jetsam that I know of, the original (cylindrical), the newer one (waisted) and now the moulded version. The earlier version uses a lower IP, therfore has a shallower depth limit. Someone correct me if I am wrong Hope this helps jason __________________ I'm not a bad person.....HONEST my homebuild photos http://www.rebreatherworld.com/photo...ery.php/cat/48 CLASSIC KISS #052/shearwater The Dyson is back
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12th July 2006, 10:32	#3 (permalink)
decoweenie Crash Test Dummy Current Rebreather/s: Other CCR Other Rebreather/s: Other CCR Join Date: Feb 2005 Location: Cairo Posts: 5,487	Re: Valves Quote: (Originally Posted by zepp) ...The earlier version uses a lower IP, therfore has a shallower depth limit... Not necessary. Very, very early units with the earlier version has 0.004" orifice thus the IP is usually set low to keep the O2 flow at nominal metabolic rate. However, the 0.0035" orifice came out soon after and most people changed to it to gain max depth. The smaller orifice then became the standard orifice on the later versions of the valve body. In other words, the valve body doesn't dictate the max depth, but rather the O2 IP. __________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM
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