Threading for Barbs

Nanidin · 09-25-2003, 05:24 PM

Ok, I'm at the point where I can drill holes and thread them so I can put barbs in... I am using 1/2" ID tubing. What size barbs/taps do I need? I went to homedepot and got real confused looking at what they had.
Thanks.

ozzy7750 · 09-26-2003, 01:59 PM

you will want either a 1/2" or 3/4" BSP tap. that should be right (it is in my country!)

jaydee · 09-26-2003, 02:06 PM

You want a 1/4" NPT tap being your in the USA. That takes a 7/16" drill bit. Make sure you make a pilot hole(s) first.

Nanidin · 09-26-2003, 09:32 PM

Ok I have a 1/4 NPT tap and 1/2 to 1/4 MPT barbs, how bad is that? They seem to make a tight fit but I won't know until it's all sealed and ready for leak testing...

09-25-2003, 05:24 PM	#1
Nanidin Cooling Neophyte Join Date: Aug 2003 Location: Missouri Posts: 9	Threading for Barbs Ok, I'm at the point where I can drill holes and thread them so I can put barbs in... I am using 1/2" ID tubing. What size barbs/taps do I need? I went to homedepot and got real confused looking at what they had. Thanks.

09-26-2003, 01:59 PM	#2
ozzy7750 Cooling Neophyte Join Date: Apr 2003 Location: Auckland, New Zealand Posts: 42	you will want either a 1/2" or 3/4" BSP tap. that should be right (it is in my country!)

09-26-2003, 02:06 PM	#3
jaydee Put up or Shut Up Join Date: Dec 2001 Location: Spokane WA Posts: 6,506	You want a 1/4" NPT tap being your in the USA. That takes a 7/16" drill bit. Make sure you make a pilot hole(s) first.

09-26-2003, 09:32 PM	#4
Nanidin Cooling Neophyte Join Date: Aug 2003 Location: Missouri Posts: 9	Ok I have a 1/4 NPT tap and 1/2 to 1/4 MPT barbs, how bad is that? They seem to make a tight fit but I won't know until it's all sealed and ready for leak testing...

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