Meg - Disconnect and connect to new diluent

Richard Lundgren · 1st September 2006, 06:20

Meg - Disconnect and connect to new diluent

How is this done? A short description backed up by a photo of the connections would be most welcome

Has anyone experienced problems doing this on a Meg?

regards,
Richard Lundgren

silent running · 1st September 2006, 06:29

Quote: (Originally Posted by Richard Lundgren)

Meg - Disconnect and connect to new diluent

How is this done? A short description backed up by a photo of the connections would be most welcome

Has anyone experienced problems doing this on a Meg?

regards,
Richard Lundgren

Hello Richard, I don't own one but I think there's an option to have another manual dil add fitting put on the CL. Otherwise, you'd be popping off the LP dil whip and putting another on... -Andy

JonnyB · 1st September 2006, 06:29

Quote: (Originally Posted by Richard Lundgren)

Meg - Disconnect and connect to new diluent

How is this done? A short description backed up by a photo of the connections would be most welcome

Has anyone experienced problems doing this on a Meg?

regards,
Richard Lundgren

Just like you plug and unplug a drysuit inflation hose.
The Meg uses SI TECH inflator valves on the counterlungs that are placed on the chest. So it should not be a problem.

/Jonny

Richard Lundgren · 1st September 2006, 06:33

Quote: (Originally Posted by JonnyB)

Just like you plug and unplug a drysuit inflation hose.
The Meg uses SI TECH inflator valves on the counterlungs that are placed on the chest. So it should not be a problem.

/Jonny

Thanks Jonny,

Can you post a close up picture of the valve connection and diluent hose connection?

Take care
Richard Lundgren

JonnyB · 1st September 2006, 06:35

I dont have that pic now, but i will take one later this afternoon when i get home from work.

/Jonny

silent running · 1st September 2006, 07:15

Quote: (Originally Posted by Richard Lundgren)

Meg - Disconnect and connect to new diluent

How is this done? A short description backed up by a photo of the connections would be most welcome

Has anyone experienced problems doing this on a Meg?

regards,
Richard Lundgren

Another option I've used to switch dils, is plumbing in a 2nd dil LP whip to an LP port on the dil 1st stage, closing one cyl and opening the other to switch. A little more attention must be paid than a gas block as you must open one and close the other and then check the contents gage-not too easy, not too hard. But it's quicker and easier than switching LP whips off the dil add valve, less stress on the skin of your fingers and eliminates stress on the CL/dil add seal. And then you don't need a 2nd dil add port in the CL, which will need additional maintenence/attention and could leak underwater or during a predive pressure test. -Andy

fredrikj · 1st September 2006, 07:18

Here is a picture ripped from the ISC homepage, not a close up, but it shows the exhale counterlung pretty good.

What you see here is the exhale counterlung with the opv at the bottom (left on the picture) and the standard si-tech valve for manual dilluent addition. In the picture you can also see that it's fitted with a dust cap that at least I usually keep in place since I normally don't have any off-board dilluent connected.

If at depth I guess gas in the valve between the dust cap and the vavle it self will become compressed and make the cap hard to disconnect if you don't push the add button on the vavle before you try to remove the cap?

-Fredrik

**wedivebc** · 1st September 2006, 11:54

If you are doing this you need a shut off for your on-board diluent. The off-board vavle is basically a sitech drysuit inflation valve and uses a standard schrader valve whip. You can plug in any gas you or your buddy may be carrying (watch out for argon though)

barney · 1st September 2006, 13:20

Quote: (Originally Posted by fredrikj)

If at depth I guess gas in the valve between the dust cap and the vavle it self will become compressed and make the cap hard to disconnect if you don't push the add button on the vavle before you try to remove the cap?

Exactly. On a dive earlier this year I was going to run thru some procedures to kill time on deco, but could not get the cap off. I thought I was going to rip the valve off. My buddy was watching me, like "WTF?" until I finally asked him to help and he had the same struggle and I got to laugh at him. I didn't think that little friggin' cap could form such a good seal....

Richard Lundgren · 1st September 2006, 13:52

Quote: (Originally Posted by barney)

Exactly. On a dive earlier this year I was going to run thru some procedures to kill time on deco, but could not get the cap off. I thought I was going to rip the valve off. My buddy was watching me, like "WTF?" until I finally asked him to help and he had the same struggle and I got to laugh at him. I didn't think that little friggin' cap could form such a good seal....

Forgive me for my lack of knowledge regarding Megs. Please consider these questions.

So if the diver drive the Meg from the inboard diluent this sitech valve isn't used?

If you need more diluent, then you plug in the off board gas into the sitech vale?

Is it a common practice to leave this cap on the sitech valve?

Would it possible to get the cap off at 100 meters depth?

Thank you,
Richard Lundgren

1st September 2006, 06:20	#1 (permalink)
Richard Lundgren New Member Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: Jul 2006 Location: Sweden Posts: 52	Meg - Disconnect and connect to new diluent Meg - Disconnect and connect to new diluent How is this done? A short description backed up by a photo of the connections would be most welcome Has anyone experienced problems doing this on a Meg? regards, Richard Lundgren
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1st September 2006, 06:29	#2 (permalink)
silent running Mature mouth breather Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Jun 2005 Location: U.S.A. Brooklyn, New York Posts: 1,778	Re: Meg - Disconnect and connect to new diluent Quote: (Originally Posted by Richard Lundgren) Meg - Disconnect and connect to new diluent How is this done? A short description backed up by a photo of the connections would be most welcome Has anyone experienced problems doing this on a Meg? regards, Richard Lundgren Hello Richard, I don't own one but I think there's an option to have another manual dil add fitting put on the CL. Otherwise, you'd be popping off the LP dil whip and putting another on... -Andy
(Online)

1st September 2006, 06:33	#4 (permalink)
Richard Lundgren New Member Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: Jul 2006 Location: Sweden Posts: 52	Re: Meg - Disconnect and connect to new diluent Quote: (Originally Posted by JonnyB) Just like you plug and unplug a drysuit inflation hose. The Meg uses SI TECH inflator valves on the counterlungs that are placed on the chest. So it should not be a problem. /Jonny Thanks Jonny, Can you post a close up picture of the valve connection and diluent hose connection? Take care Richard Lundgren
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1st September 2006, 06:35	#5 (permalink)
JonnyB Jonny The Hatch Current Rebreather/s: MK 15.X Titan Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Megalodon Sport Kiss Classic Kiss Other CCR Other SCR Home Build Join Date: Jan 2005 Location: Sweden (Stockholm)/Cyprus(Ayia Napa) Posts: 944	Re: Meg - Disconnect and connect to new diluent I dont have that pic now, but i will take one later this afternoon when i get home from work. /Jonny __________________ A quote from Crazyduck - In remembering our own Rob Davies. "Outbound flight 777 heavy you are cleared for flight Due west into that warm red Texas sunset You have angels on your wings and divers memories on your six." Rest In Peace http://www.divetekcyprus.com http://www.diveccr.com
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1st September 2006, 07:15	#6 (permalink)
silent running Mature mouth breather Current Rebreather/s: Prism Topaz Other Rebreather/s: Join Date: Jun 2005 Location: U.S.A. Brooklyn, New York Posts: 1,778	Re: Meg - Disconnect and connect to new diluent Quote: (Originally Posted by Richard Lundgren) Meg - Disconnect and connect to new diluent How is this done? A short description backed up by a photo of the connections would be most welcome Has anyone experienced problems doing this on a Meg? regards, Richard Lundgren Another option I've used to switch dils, is plumbing in a 2nd dil LP whip to an LP port on the dil 1st stage, closing one cyl and opening the other to switch. A little more attention must be paid than a gas block as you must open one and close the other and then check the contents gage-not too easy, not too hard. But it's quicker and easier than switching LP whips off the dil add valve, less stress on the skin of your fingers and eliminates stress on the CL/dil add seal. And then you don't need a 2nd dil add port in the CL, which will need additional maintenence/attention and could leak underwater or during a predive pressure test. -Andy
(Online)

1st September 2006, 07:18	#7 (permalink)
fredrikj New Member Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Dec 2005 Location: Oslo, Norway Posts: 10	Re: Meg - Disconnect and connect to new diluent Here is a picture ripped from the ISC homepage, not a close up, but it shows the exhale counterlung pretty good. What you see here is the exhale counterlung with the opv at the bottom (left on the picture) and the standard si-tech valve for manual dilluent addition. In the picture you can also see that it's fitted with a dust cap that at least I usually keep in place since I normally don't have any off-board dilluent connected. If at depth I guess gas in the valve between the dust cap and the vavle it self will become compressed and make the cap hard to disconnect if you don't push the add button on the vavle before you try to remove the cap? -Fredrik
(Online)

1st September 2006, 11:54	#8 (permalink)
wedivebc FIGJAM Current Rebreather/s: Megalodon Other CCR Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Other CCR Join Date: Feb 2005 Location: Vancouver Island BC Canada Posts: 1,358	Re: Meg - Disconnect and connect to new diluent If you are doing this you need a shut off for your on-board diluent. The off-board vavle is basically a sitech drysuit inflation valve and uses a standard schrader valve whip. You can plug in any gas you or your buddy may be carrying (watch out for argon though) __________________ Cheers, Dave.... Man is the only animal burdened with the knowledge he will eventually die
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1st September 2006, 13:20	#9 (permalink)
barney Custom Title Allowed! Current Rebreather/s: Megalodon Other Rebreather/s: Join Date: Aug 2005 Location: St. Petersburg, FL Posts: 234	Re: Meg - Disconnect and connect to new diluent Quote: (Originally Posted by fredrikj) If at depth I guess gas in the valve between the dust cap and the vavle it self will become compressed and make the cap hard to disconnect if you don't push the add button on the vavle before you try to remove the cap? Exactly. On a dive earlier this year I was going to run thru some procedures to kill time on deco, but could not get the cap off. I thought I was going to rip the valve off. My buddy was watching me, like "WTF?" until I finally asked him to help and he had the same struggle and I got to laugh at him. I didn't think that little friggin' cap could form such a good seal.... __________________ Michael C. Barnette ASSOCIATION OF UNDERWATER EXPLORERS
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1st September 2006, 13:52	#10 (permalink)
Richard Lundgren New Member Current Rebreather/s: Other SCR Other Rebreather/s: Other SCR Join Date: Jul 2006 Location: Sweden Posts: 52	Re: Meg - Disconnect and connect to new diluent Quote: (Originally Posted by barney) Exactly. On a dive earlier this year I was going to run thru some procedures to kill time on deco, but could not get the cap off. I thought I was going to rip the valve off. My buddy was watching me, like "WTF?" until I finally asked him to help and he had the same struggle and I got to laugh at him. I didn't think that little friggin' cap could form such a good seal.... Forgive me for my lack of knowledge regarding Megs. Please consider these questions. So if the diver drive the Meg from the inboard diluent this sitech valve isn't used? If you need more diluent, then you plug in the off board gas into the sitech vale? Is it a common practice to leave this cap on the sitech valve? Would it possible to get the cap off at 100 meters depth? Thank you, Richard Lundgren
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