APD QC vs. Swagelok QC6

plazma · 11th October 2006, 15:05

I have been looking for connectors for my diy project and for Inspiration off-board.

How does APD QC compare against Swagelok QC6?

APD QC are cheaper, have also automatic closure on both ends (right?), easier fix onto hoses.

How about flow rates at depth? Can you have pressure on both APD ends when disconnected?

-Pasi

Barrie Law · 11th October 2006, 23:25

Quote: (Originally Posted by plazma)

I have been looking for connectors for my diy project and for Inspiration off-board.

How does APD QC compare against Swagelok QC6?

APD QC are cheaper, have also automatic closure on both ends (right?), easier fix onto hoses.

How about flow rates at depth? Can you have pressure on both APD ends when disconnected?

-Pasi

Hi Pasi,

Both the APD QC and the Swagelok QC6 are good options.

The APD QC connectors can prove difficult to re-connect under pressure and they should be fitted with that in mind.

I have both types and I use the APD QC on my unit.

Regards

LukeN · 12th October 2006, 00:23

If your look at the flow data on the QC6 it is really low (under 50l/min) I found them but wasn't game to trust my life on such a low flow rate.

I use snap tite svh-c4

diverklondike · 12th October 2006, 03:49

Luke,

What is the difference in the flow rate between the two? I use qc6's and am very happy with them.

Dive Safe...

M

jhaaja · 12th October 2006, 06:30

Quote: (Originally Posted by LukeN)

If your look at the flow data on the QC6 it is really low (under 50l/min) I found them but wasn't game to trust my life on such a low flow rate.

I use snap tite svh-c4

Where did you get that flow value? There is only maximum flow rate for water given in Swagelok catalog and it is 22 L/min (water). Then we can make somekind of calculation or estimation how much for example TX15/55 can flow through it. My guess is a lot

Plazma, I have ordering numbers for you if you need them for QC6.

JH

Marc T · 12th October 2006, 10:07

Quote: (Originally Posted by jhaaja)

Where did you get that flow value? There is only maximum flow rate for water given in Swagelok catalog and it is 22 L/min (water). Then we can make somekind of calculation or estimation how much for example TX15/55 can flow through it. My guess is a lot

Plazma, I have ordering numbers for you if you need them for QC6.

JH

Please just try that: connect male and female QC6 so blow through them then try the same thing through a standard reg connector youll be surprised.
very restrictive compared to the size of this device!

cheers

Marc

jhaaja · 12th October 2006, 13:05

Quote: (Originally Posted by Marc T)

Please just try that: connect male and female QC6 so blow through them then try the same thing through a standard reg connector youll be surprised.
very restrictive compared to the size of this device!

cheers

Marc

Off course if you test it like that it will restrict the flow. In use there is pressure inside that drives the gas. Someone should do measurement, how much trimix-gas can go through.

JH

steevke · 12th October 2006, 14:17

You don't have to measure it, you can calculate it.
The valve sizing pdf on the swagelock website gives you all the graphs you need for this.

http://www.swagelok.com/downloads/we...N/MS-06-84.pdf

I know this is for valves, but you can use the Cv (0.5) factor of the QC6 connector for the same purpose.

Steven.

Quote: (Originally Posted by jhaaja)

Off course if you test it like that it will restrict the flow. In use there is pressure inside that drives the gas. Someone should do measurement, how much trimix-gas can go through.

JH

LukeN · 12th October 2006, 15:00

The snaptite is around the 70l/min of oil so it should let through 2-3 times in air? It isn't to bad to connect under pressure.

Quote: (Originally Posted by diverklondike)

Luke,

What is the difference in the flow rate between the two? I use qc6's and am very happy with them.

Dive Safe...

M

LukeN · 12th October 2006, 15:06

Sorry took a guess, it was late I new it was low but

.

Quote: (Originally Posted by jhaaja)

Where did you get that flow value? There is only maximum flow rate for water given in Swagelok catalog and it is 22 L/min (water). Then we can make somekind of calculation or estimation how much for example TX15/55 can flow through it. My guess is a lot

Plazma, I have ordering numbers for you if you need them for QC6.

JH

11th October 2006, 15:05	#1 (permalink)
plazma Just add ice & water Current Rebreather/s: Home Build Other Rebreather/s: Inspiration Classic Home Build Join Date: Feb 2005 Location: Oulu, Finland Posts: 148	APD QC vs. Swagelok QC6 I have been looking for connectors for my diy project and for Inspiration off-board. How does APD QC compare against Swagelok QC6? APD QC are cheaper, have also automatic closure on both ends (right?), easier fix onto hoses. How about flow rates at depth? Can you have pressure on both APD ends when disconnected? -Pasi
(Online)

11th October 2006, 23:25	#2 (permalink)
Barrie Law Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Jun 2005 Location: Ireland Posts: 459	Re: APD QC vs. Swagelok QC6 Quote: (Originally Posted by plazma) I have been looking for connectors for my diy project and for Inspiration off-board. How does APD QC compare against Swagelok QC6? APD QC are cheaper, have also automatic closure on both ends (right?), easier fix onto hoses. How about flow rates at depth? Can you have pressure on both APD ends when disconnected? -Pasi Hi Pasi, Both the APD QC and the Swagelok QC6 are good options. The APD QC connectors can prove difficult to re-connect under pressure and they should be fitted with that in mind. I have both types and I use the APD QC on my unit. Regards
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12th October 2006, 00:23	#3 (permalink)
LukeN New Member Current Rebreather/s: Optima Other Rebreather/s: Not Bought Yet Prism Topaz Join Date: Jun 2005 Location: Australia,West Aus Posts: 85	Re: APD QC vs. Swagelok QC6 If your look at the flow data on the QC6 it is really low (under 50l/min) I found them but wasn't game to trust my life on such a low flow rate. I use snap tite svh-c4 __________________ Luke Nelson www.imagedive.com.au
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12th October 2006, 03:49	#4 (permalink)
diverklondike RBW Member Current Rebreather/s: Inspiration Classic Other CCR Other Rebreather/s: Inspiration Classic Other CCR Join Date: Oct 2005 Location: Delaware, USA Posts: 1,699	Re: APD QC vs. Swagelok QC6 Luke, What is the difference in the flow rate between the two? I use qc6's and am very happy with them. Dive Safe... M
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12th October 2006, 06:30	#5 (permalink)
jhaaja Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Mar 2005 Location: Finland Posts: 885	Re: APD QC vs. Swagelok QC6 Quote: (Originally Posted by LukeN) If your look at the flow data on the QC6 it is really low (under 50l/min) I found them but wasn't game to trust my life on such a low flow rate. I use snap tite svh-c4 Where did you get that flow value? There is only maximum flow rate for water given in Swagelok catalog and it is 22 L/min (water). Then we can make somekind of calculation or estimation how much for example TX15/55 can flow through it. My guess is a lot Plazma, I have ordering numbers for you if you need them for QC6. JH
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12th October 2006, 10:07	#6 (permalink)
Marc T hell is in the details Current Rebreather/s: RB80 / Clone Home Build Other Rebreather/s: Not Bought Yet RB80 / Clone Home Build Join Date: Sep 2005 Location: FRANCE Carcassonne Posts: 495	Re: APD QC vs. Swagelok QC6 Quote: (Originally Posted by jhaaja) Where did you get that flow value? There is only maximum flow rate for water given in Swagelok catalog and it is 22 L/min (water). Then we can make somekind of calculation or estimation how much for example TX15/55 can flow through it. My guess is a lot Plazma, I have ordering numbers for you if you need them for QC6. JH Please just try that: connect male and female QC6 so blow through them then try the same thing through a standard reg connector youll be surprised. very restrictive compared to the size of this device! cheers Marc
(Online)

12th October 2006, 13:05	#7 (permalink)
jhaaja Custom Title Allowed! Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Mar 2005 Location: Finland Posts: 885	Re: APD QC vs. Swagelok QC6 Quote: (Originally Posted by Marc T) Please just try that: connect male and female QC6 so blow through them then try the same thing through a standard reg connector youll be surprised. very restrictive compared to the size of this device! cheers Marc Off course if you test it like that it will restrict the flow. In use there is pressure inside that drives the gas. Someone should do measurement, how much trimix-gas can go through. JH
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12th October 2006, 14:17	#8 (permalink)
steevke Custom Title Allowed! Current Rebreather/s: Inspiration Vision Other Rebreather/s: Sport Kiss Join Date: Jul 2005 Location: Belgium Posts: 317	Re: APD QC vs. Swagelok QC6 You don't have to measure it, you can calculate it. The valve sizing pdf on the swagelock website gives you all the graphs you need for this. http://www.swagelok.com/downloads/we...N/MS-06-84.pdf I know this is for valves, but you can use the Cv (0.5) factor of the QC6 connector for the same purpose. Steven. Quote: (Originally Posted by jhaaja) Off course if you test it like that it will restrict the flow. In use there is pressure inside that drives the gas. Someone should do measurement, how much trimix-gas can go through. JH
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12th October 2006, 15:00	#9 (permalink)
LukeN New Member Current Rebreather/s: Optima Other Rebreather/s: Not Bought Yet Prism Topaz Join Date: Jun 2005 Location: Australia,West Aus Posts: 85	Re: APD QC vs. Swagelok QC6 The snaptite is around the 70l/min of oil so it should let through 2-3 times in air? It isn't to bad to connect under pressure. Quote: (Originally Posted by diverklondike) Luke, What is the difference in the flow rate between the two? I use qc6's and am very happy with them. Dive Safe... M __________________ Luke Nelson www.imagedive.com.au
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12th October 2006, 15:06	#10 (permalink)
LukeN New Member Current Rebreather/s: Optima Other Rebreather/s: Not Bought Yet Prism Topaz Join Date: Jun 2005 Location: Australia,West Aus Posts: 85	Re: APD QC vs. Swagelok QC6 Sorry took a guess, it was late I new it was low but . Quote: (Originally Posted by jhaaja) Where did you get that flow value? There is only maximum flow rate for water given in Swagelok catalog and it is 22 L/min (water). Then we can make somekind of calculation or estimation how much for example TX15/55 can flow through it. My guess is a lot Plazma, I have ordering numbers for you if you need them for QC6. JH __________________ Luke Nelson www.imagedive.com.au
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