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Post by ChrisJ on Sept 13, 2013 3:27:46 GMT
If only there was a way to purge the air out of the line first this could work. I'm sorry my drawing is not to scale, but I think it gives an idea. Seems like a real easy way to give a CA a drink, if only you could get the air out of the copper line. I guess you could just try and fill the line with nitrogen and then just purge any NCG after filling. Seems like it would be super easy to fill this way though. By the way, where do you buy connectors to braze onto tubing to make your own rigid lines? The 1/4 SAE type connectors? I couldn't find any. Attachments:
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Post by cablehack on Sept 13, 2013 4:23:12 GMT
That looks familiar. Your diagram is exactly what I thought I'd have to do when I first got into all of this I think the problem of air in the line is what got me thinking about the funnel approach, and then of course it turns out jhigdon was using that too. If you can fill the charge valve adaptor and tubing first it'll work. If you're talking about the Schrader valve tails, I got them from Heatcraft. Cat. no. AV4RBL for the 1/4" diam, 4" tail ones. Is this the kind of thing you're looking for? www.ebay.com/itm/5-Access-Valve-3-8-OD-x-1-4-SAE-Access-x-2-stem-Core-Cap-Core-Remover-/200908171457
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Post by ChrisJ on Sept 13, 2013 4:31:09 GMT
That looks familiar. Your diagram is exactly what I thought I'd have to do when I first got into all of this I think the problem of air in the line is what got me thinking about the funnel approach, and then of course it turns out jhigdon was using that too. If you can fill the charge valve adaptor and tubing first it'll work. If you're talking about the Schrader valve tails, I got them from Heatcraft. Is this the kind of thing you're looking for? www.ebay.com/itm/5-Access-Valve-3-8-OD-x-1-4-SAE-Access-x-2-stem-Core-Cap-Core-Remover-/200908171457Hmm don't think so. I need 1/4" SAE female. I want to be able to make up some connectors using some of the 1/4" OD tubing I bought and connect them to the vacuum pump and the valve adapter which are both 1/4" SAE. This is to use for vacuuming instead of a hose.
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Post by cablehack on Sept 13, 2013 4:36:50 GMT
I've never seen those. You might have to use adaptors with the male ones, if you can find them.
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Post by coldspaces on Sept 13, 2013 4:44:21 GMT
Your flaring the ends of the copper tube aren't you? It should fit the standard male connections for refrigeration gauges then.
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Post by ChrisJ on Sept 13, 2013 12:32:39 GMT
I wasn't planning on flaring it, but if I need to then I guess I will. The problem is male connections won't work at least for what I'm thinking I want to do.
Everything I see on vacuuming and using my micron gauge recommends rigid tubing for vacuuming, not hoses. The problem is how can you do this, if you cannot by the female hose ends to braze onto tubing? I have not seen pre made sets either, only hoses? Right now my only guess is, you buy the male ends, make up your sets and then use premade female to female couplers like cablehack said?
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Post by coldspaces on Sept 13, 2013 13:10:42 GMT
I wasn't planning on flaring it, but if I need to then I guess I will. The problem is male connections won't work at least for what I'm thinking I want to do. Everything I see on vacuuming and using my micron gauge recommends rigid tubing for vacuuming, not hoses. The problem is how can you do this, if you cannot by the female hose ends to braze onto tubing? I have not seen pre made sets either, only hoses? Right now my only guess is, you buy the male ends, make up your sets and then use premade female to female couplers like cablehack said? I don't understand the need for female fittings on the ends of the tube, am I missiunderstanding something?. My float adapter tool and gauge set already have male 1/4" fittings, I would slip on a flare nut, flare the tube and screw it onto the same male fittings I already have on my gauges and float adapter tool. If flared right and tight they should work just fine.
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Post by ChrisJ on Sept 13, 2013 13:16:39 GMT
I wasn't planning on flaring it, but if I need to then I guess I will. The problem is male connections won't work at least for what I'm thinking I want to do. Everything I see on vacuuming and using my micron gauge recommends rigid tubing for vacuuming, not hoses. The problem is how can you do this, if you cannot by the female hose ends to braze onto tubing? I have not seen pre made sets either, only hoses? Right now my only guess is, you buy the male ends, make up your sets and then use premade female to female couplers like cablehack said? I don't understand the need for female fittings on the ends of the tube, am I missiunderstanding something?. My float adapter tool and gauge set already have male 1/4" fittings, I would slip on a flare nut, flare the tube and screw it onto the same male fittings I already have on my gauges and float adapter tool. If flared right and tight they should work just fine. Oh! No, you're not missing something I'm just a dope.
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Post by coldspaces on Sept 13, 2013 13:28:02 GMT
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Post by cablehack on Sept 14, 2013 9:16:05 GMT
That all sounds new to me. Interesting - I just used whatever hoses were lying around to vacuum the system.
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