NPT adapters
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Old 03-02-2015, 09:48 PM   #1
Fruits
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NPT adapters


hello, first time on this forum, heard and read lots of good things about it too .
i have a couple quick questions regarding npt adapters
i have a parker v series needle valve, which i believe is a 1/4 npt (can't find which one, i'll notify once i figure it out) and a solenoid with a 1/8 fpt thread.
for adapters do i have to purchase a 1/4 to 1/8 with the genders opposite of what they're connecting to, or same gender?
thanks
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Old 03-02-2015, 09:51 PM   #2
Solcielo lawrencia
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Opposite. Male inserts into Female.
E.g.:
1/4M-1/4F
1/8M-1/8F
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Old 03-02-2015, 10:49 PM   #3
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so for 1/4 fpt to 1/8 fpt, i would need a 1/4 mpt to 1/8 mpt?
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Old 03-02-2015, 11:00 PM   #4
Solcielo lawrencia
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If the part is 1/4 fNPT connection, then you need 1/4 mNPT. etc.
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Old 03-03-2015, 01:02 AM   #5
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and would i have to seal the connections with tape or anything, or will the adapters work fine?
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Old 03-03-2015, 01:21 AM   #6
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On small brass fittings that are almost smaller than the tape, I like using the pipe sealer that comes in a tube like glue might. It is not necessary to use a lot of sealer, just enough to fill in the tiny spots where the threads are no solidly against each other. This makes it easy to get too much tape and some winds up hanging over the end where it can get cut off when screwed together. Then that tiny bit of junk can make it's way to clog some little passage. Just safer to avoid the question?
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Old 03-06-2015, 12:26 AM   #7
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so no tape is what you're suggesting
would i just that sealer with the tubing as well, as some of it is not 100% tight
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Old 03-06-2015, 01:17 AM   #8
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post a picture of your needle valve and solenoid. lets see what you have exactly.
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Old 03-06-2015, 01:45 AM   #9
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Tubing would not normally need sealer of either type. If you are using barb fittings, the tubing should be tight enough to be somewhat difficult to get it on or have a metal or other seal to hold it secure. On low pressure lines like some CO2 , I just add a touch of silicone or super glue to help stop any small leaks and add a little mechanical strength. If the option is handy, I prefer the strength of compression fittings but that is only if it doesn't get complicated.
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Old 03-12-2015, 02:52 AM   #10
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https://mail.google.com/mail/u/0/?ui...1&disp=safe&zw
if that's not the correct way to send pictures, please let me know .
sorry for the inactivity, been doing lots of stuff lately

on my atomizer to my co2 tubing, it doesn't really fit, and the tubing isn't large enough, i could use a tiny bit of silicone tubing as it does fit.
any ideas that are better, as i really don't know what to do, as i only have the 3/16" tubing but have not really seen anything else
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Old 03-12-2015, 03:07 AM   #11
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Quote:
Originally Posted by Fruits View Post
https://mail.google.com/mail/u/0/?ui...1&disp=safe&zw
if that's not the correct way to send pictures, please let me know .
sorry for the inactivity, been doing lots of stuff lately

on my atomizer to my co2 tubing, it doesn't really fit, and the tubing isn't large enough, i could use a tiny bit of silicone tubing as it does fit.
any ideas that are better, as i really don't know what to do, as i only have the 3/16" tubing but have not really seen anything else
Short run might not make much of a difference but just so you know:

Quote:
Silicone tubing is highly pearmeable to Co2, meaning that not all of the Co2 will exit through the end of the tubing, some, if not most, will exit through the actual wall of the tubing. While it may work you will be wasting most of your co2, and with a DIY system, Most of your Co2, is too much to lose.
http://www.coleparmer.com/TechLibraryArticle/700
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Old 03-12-2015, 05:43 AM   #12
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Jeff are you doing this on purpose? You know what I mean. I won't ruin the joke
and I'm ashamed to say it took me this long to realize it.

If you're doing what I think you're doing, then it's EPIC!
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Old 03-13-2015, 01:54 AM   #13
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i don't really know what to do, as the co2 proof tubing won't really fit my atomizer, and i'm stuck as i don't know what to do.

i have no idea what you are talking about, but it's probably making me look like an idiot :/
can you let me in?
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Old 03-13-2015, 02:24 AM   #14
Solcielo lawrencia
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What size is the atomizer tube fittings? You need tubing sized to fit it.
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Old 03-13-2015, 10:10 PM   #15
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Quote:
Originally Posted by Solcielo lawrencia View Post
What size is the atomizer tube fittings? You need tubing sized to fit it.
i know that, i just didn't know what the tubing size was on the atomizer
it's a upaqua 12/16mm i believe
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