CGA nipple thread help - Page 3 - APE - Aquatic Plant Enthusiasts

AquaZilla · 03-08-2010, 07:53 PM

Okay, from what I have been reading in all the links provided I really dont see this working out. The fine thread AND CGA320 connection seem to be non existent. However, I have seen nitrogen/CGA320 connection adapters which is what you may end up doing if need be. I know Bill over on Plant Guild sells them pretty cheap.

S&KGray · 03-09-2010, 02:56 AM

This fine thread nipple that sajata linked is 1/2"-27 thread
CGA 510FT Nut and Nipple

and looks just like the nipple I have. Also I found out that CGA 500, 510, 580, 590 all use the same nipple; just different nuts (the nut I have is a CGA 590). So they all would use the same 1/4" NPT (normal thread) nipple or 1/2"-27 (fine thread) nipple. The one have is 3" so part number 15-9 as shown on these listings:

http://www.westernenterprises.com/en.../PDFS/wi22.pdf

http://www.westernenterprises.com/en.../PDFS/wi23.pdf

Which is also listed here with the right part number and description, but with the wrong picture. I noticed a lot of wrong pictures being shown when looking up these parts.

So it looks like what I need is a CGA 320 nipple with 1/2"-27 (fine thread). Which brings me to part CO-7, listed here:

http://www.westernenterprises.com/enterprises/PDFS/wi21.pdf

I hope that explains how I came to my conclusion.

S&KGray · 03-10-2010, 04:15 PM

I got a email reply from Matheson:

Quote:

The inlet thread on a Model 8 regulator is 1/2" -27. We no longer carry CGA fittings or adaptors for 1/2" -27 threads.

For Matheson Tri-Gas,

Bill Staples

1/2"-27 it is.

AquaZilla · 03-10-2010, 04:25 PM

Im still not sure how your going to get a 1/2" 27 TPI flare to work on a CGA320 Cylinder connection..

S&KGray · 03-10-2010, 06:08 PM

Quote:

Originally Posted by S&KGray

It looks like Western Enterprises makes a 1/2"-27 thread nipple for most of the different CGA types. This is where I got the part number CO-7 for the CGA320 nipple with 1/2"-27 threads.

http://www.westernenterprises.com/en.../PDFS/wi21.pdf

Page 2, under CGA-320 for Carbon Dioxide, part CO-7 is a CGA-320 nipple with 1/2"-27 thread on the end that goes in the regulator inlet port. I just need to get that nipple (CO-7) and a nut (CO-2).

Most regulators with a standard 1/4" NPT inlet port would use any of the nipples that have 1/4" NPT (CO-3, CO-4, etc.)

AquaZilla · 03-10-2010, 06:11 PM

Ahh! I did not see page 2! Sounds perfect! CO-7 Nipple Brass, 1/2"-27, 2 1/2" Long CGA-320

03-08-2010, 07:53 PM	#21 (permalink)
AquaZilla Administrator Join Date: Feb 2009 Posts: 2,736	Okay, from what I have been reading in all the links provided I really dont see this working out. The fine thread AND CGA320 connection seem to be non existent. However, I have seen nitrogen/CGA320 connection adapters which is what you may end up doing if need be. I know Bill over on Plant Guild sells them pretty cheap. __________________ The Planted Aquarium Blog

03-10-2010, 04:25 PM	#24 (permalink)
AquaZilla Administrator Join Date: Feb 2009 Posts: 2,736	Im still not sure how your going to get a 1/2" 27 TPI flare to work on a CGA320 Cylinder connection.. __________________ The Planted Aquarium Blog

03-10-2010, 06:11 PM	#26 (permalink)
AquaZilla Administrator Join Date: Feb 2009 Posts: 2,736	Ahh! I did not see page 2! Sounds perfect! CO-7 Nipple Brass, 1/2"-27, 2 1/2" Long CGA-320 __________________ The Planted Aquarium Blog

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03-09-2010, 02:56 AM	#22 (permalink)
S&KGray Junior Member Join Date: Mar 2010 Location: Kauai, HI Posts: 12	This fine thread nipple that sajata linked is 1/2"-27 thread CGA 510FT Nut and Nipple and looks just like the nipple I have. Also I found out that CGA 500, 510, 580, 590 all use the same nipple; just different nuts (the nut I have is a CGA 590). So they all would use the same 1/4" NPT (normal thread) nipple or 1/2"-27 (fine thread) nipple. The one have is 3" so part number 15-9 as shown on these listings: http://www.westernenterprises.com/en.../PDFS/wi22.pdf http://www.westernenterprises.com/en.../PDFS/wi23.pdf Which is also listed here with the right part number and description, but with the wrong picture. I noticed a lot of wrong pictures being shown when looking up these parts. So it looks like what I need is a CGA 320 nipple with 1/2"-27 (fine thread). Which brings me to part CO-7, listed here: http://www.westernenterprises.com/enterprises/PDFS/wi21.pdf I hope that explains how I came to my conclusion.