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Old 10-05-2016, 05:05 PM   #1
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Dumb question about how are adapters named...


Are adapters named for the gender/sizes they connect or the fittings they contain?

Here's my problem. I need a fitting to connect a G 1/2" female to a 1/2" NPT male pipe.

G 1/2" Female <---- What goes here <----- NPT 1/2" Male

Do I need:
1) G Thread 1/2" Female to NPT Thread 1/2" Male Pipe Fitting Adapter
or
2) G Thread 1/2" Male to NPT Thread 1/2" Female Pipe Fitting Adapter

There's no way to tell from the picture as both are 1/2" and 14 threads. I need 7 of one and 1 of the other and I think I just ordered backwards.

Last edited by DaveNJ; 10-05-2016 at 05:07 PM.
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Old 10-05-2016, 07:09 PM   #2
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Re: Dumb question about how are adapters named...


Got to look at it from the straight sex angle. Females or on the outside and males insert into females.
G Thread 1/2" Male to NPT Thread 1/2" Female Pipe Fitting Adapter This would work but Your G stuff also has some with O rings.
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Old 10-05-2016, 10:17 PM   #3
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Re: Dumb question about how are adapters named...


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Originally Posted by Ghostmaker View Post
Got to look at it from the straight sex angle. Females or on the outside and males insert into females.
G Thread 1/2" Male to NPT Thread 1/2" Female Pipe Fitting Adapter This would work but Your G stuff also has some with O rings.
Ok Ghost... I gotta ask... what is G stuff....

(I know what the o rings are... my XXXX likes that
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Old 10-06-2016, 05:41 AM   #4
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Re: Dumb question about how are adapters named...


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Originally Posted by Ghostmaker View Post
Got to look at it from the straight sex angle. Females or on the outside and males insert into females.
G Thread 1/2" Male to NPT Thread 1/2" Female Pipe Fitting Adapter This would work but Your G stuff also has some with O rings.
LOL. I know about the little boy parts and the little girl parts

I guess my question was confusing, so let me try with an example using what is probably the most common connector in the US, the 1/2" copper elbow. Would you call that a male-to-male connector because it connects the male ends of two pipes, or a female-to-female connector because it has two female parts?

Maybe there is no standard naming convention, or the supply house I ordered from got it wrong, but I ordered based on the fittings I needed on the connector itself, but it seems the adapters are named for the parts they connect.
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Old 10-06-2016, 05:56 AM   #5
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Re: Dumb question about how are adapters named...


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Originally Posted by MTN REMODEL LLC View Post
Ok Ghost... I gotta ask... what is G stuff....
G is a variant in the British Standard Pipe (BSP) system, used primarily everywhere on Earth but the US and Canada. G threads are parallel (not tapered) for both the internal and external parts and require some type of bonded seal washer or o-ring facing seal.

It is used in the US for many haudraulic/high-pressure applications and by idiots (like me) who buy shower systems from websites (Wayfair, Overstock) who get their products from China. Some people claim BSP is a superior connection method, but I find it a PITA because of the variation in sealing mechanisms and the difficulty in finding pieces.
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Old 10-06-2016, 08:19 AM   #6
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Re: Dumb question about how are adapters named...


The two fittings you described are as shown below.
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Old 10-06-2016, 08:46 AM   #7
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Re: Dumb question about how are adapters named...


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Originally Posted by SPS-1 View Post
The two fittings you described are as shown below.
Thanks for taking the time to sketch that and that's exactly the way I was thinking. Maybe the vendor has mislabeled parts, because this is the fitting that works -- and see how it's labeled (the name describes what that adapter connects -- G Female and NPT Male, not the fittings on the actual adapter: G Male and NPT Female).

This connection (barring the sealing washer) fits like a glove from G to NPT. By Friday, I'll have enough of both adapters to finish (hopefully) and will return the unused ones. Due to shipping and local unavailability, each mistake sets me back 2 to 3 days.
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Old 10-06-2016, 05:31 PM   #8
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Re: Dumb question about how are adapters named...


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Originally Posted by DaveNJ View Post
LOL. I know about the little boy parts and the little girl parts

I guess my question was confusing, so let me try with an example using what is probably the most common connector in the US, the 1/2" copper elbow. Would you call that a male-to-male connector because it connects the male ends of two pipes, or a female-to-female connector because it has two female parts?

Maybe there is no standard naming convention, or the supply house I ordered from got it wrong, but I ordered based on the fittings I needed on the connector itself, but it seems the adapters are named for the parts they connect.
No I would just ask for a 1/2" copper 90's or elbows.

1/2 " Street 90"s are a total different type of animal (male to female)
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Old 10-06-2016, 05:58 PM   #9
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Re: Dumb question about how are adapters named...


Probably late now, but if you search E-bay, you can do better than $17/each.
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Old 10-10-2016, 06:27 AM   #10
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Re: Dumb question about how are adapters named...


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Probably late now, but if you search E-bay, you can do better than $17/each.
Dang - that would have saved me plenty, especially since I had to source the sealing washers separately and that eBay seller includes them.

In the end, I did confirm that the adapters needed were 1/2" Male G (with sealing washer) x 1/2" Female NPT. The adapters are named for the fittings they contain, not what they connect to.
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