Regulator Trades?

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Originally Posted by moody

Hopefully these are a bit clearer. I'm also going to my storage unit some point in the next week or so and will take pics of the rest of them. I appreciate the help, and the banter!

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It appears to be a late model (post 1994) first stage. Part number 3720, or 3790. Why do you have a 125 psi OPV? Those 2nd stages can take much higher IP.

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Originally Posted by FW

It appears to be a late model (post 1994) first stage. Part number 3720, or 3790. Why do you have a 125 psi OPV? Those 2nd stages can take much higher IP.

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I did that because I had one Cyklon 2nd stage and one Jetstream, the Poseidon tech who serviced them said I could have the different 2nd stages but needed to put an OPV on for the jetstream. Does that sound right to you?

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Originally Posted by FW

What was this thread about anyway? ...

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The brain-eating amoebas strike again - quick, you need a Deco Cookie! :)

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Originally Posted by moody

I did that because I had one Cyklon 2nd stage and one Jetstream, the Poseidon tech who serviced them said I could have the different 2nd stages but needed to put an OPV on for the jetstream. Does that sound right to you?

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Only if you don't use the original style Jetstream hose. The OPV is in the hose. A quick way to check is hold the 2nd stage, and pull the hose. If it is a standard hose, it will pull out about 1/8" and hiss.

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Originally Posted by FW

Only if you don't use the original style Jetstream hose. The OPV is in the hose. A quick way to check is hold the 2nd stage, and pull the hose. If it is a standard hose, it will pull out about 1/8" and hiss.

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Thanks for the explanation! I will check it and see what happens.

Here are some more pics, so in total, there are 3 metal Cyklon 2nd stages and older Cyklon 1st stages, 1 plastic Cyklon 2nd stage with a newer (mid 90's) Cyklon 2nd stage and 1 Jetstream 2nd stage (2yrs old). Am open to selling or swapping.
http://tapatalk.imageshack.com/v2/14...9f33cb4dd9.jpghttp://tapatalk.imageshack.com/v2/14...a1f8c97c84.jpghttp://tapatalk.imageshack.com/v2/14...75ed992b36.jpghttp://tapatalk.imageshack.com/v2/14...4aaf0e2480.jpg

The regs are now sold, thanks to everyone for the advice and assistance!

I don't have access to lock the thread so Mods feel free to do so.

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Originally Posted by FW

Only if you don't use the original style Jetstream hose. The OPV is in the hose. A quick way to check is hold the 2nd stage, and pull the hose. If it is a standard hose, it will pull out about 1/8" and hiss.

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It looks like the hose does not have the OPV (near as I can tell from the original photo). I would think it was the IP that was set to 125. I would think the OPV would be nearer to 200 PSI. Then again there is a reason I do all of my Poseidon regulators myself.

RGU
i just recently bought Jetstream 1st, and 2nd stage regs from DGX ,and when was diving in Cave County last month with my LP85's " cave filled at dive outpost" one of my first stage OPV was bubbling. i had installed 70 degree elbows. What seems to be the problem?

if the opv was bubbling you have IP creep, that's the relief point for the MK3 first stages. Take it back to DGX and ask them to fix it. This is why all divers should have IP gauges and use them, especially on new regulators. Pressurize them and let them sit for 10 minutes and make sure they don't move.