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  #11  
Old 05-06-2013, 04:24 PM
waterlogged882 waterlogged882 is offline
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  #12  
Old 05-06-2013, 04:24 PM
88 PS190 88 PS190 is offline
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Agreed, I've been planning this same project just to get more threads engaged, mine only thread in about 1.5 threads.
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  #13  
Old 05-06-2013, 04:29 PM
waterlogged882 waterlogged882 is offline
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  #14  
Old 05-12-2013, 10:58 AM
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Ski-me Ski-me is offline
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OK, I now also have the same problem. I'm trying to determine if the 3/4 NTP is the same thread size/pitch as the 3/4" galvanized plug at Lowes (or the 3/4" gas black pipe). The threads line up with my old plug. I just want to make sure before trying to get these one.

I couldn't find a brass fitting (tee, reducer) to match the same thread pitch. The ones I found were more coarse.....like a hose type thread. I saw a lot of MIP type threads, but no NTP's.

Does Lowes/HD have a 3/4" tap this size? Is it a common one?
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  #15  
Old 05-12-2013, 11:04 AM
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Originally Posted by Ski-me View Post
OK, I now also have the same problem. I'm trying to determine if the 3/4 NTP is the same thread size/pitch as the 3/4" galvanized plug at Lowes (or the 3/4" gas black pipe). The threads line up with my old plug. I just want to make sure before trying to get these one.

I couldn't find a brass fitting (tee, reducer) to match the same thread pitch. The ones I found were more coarse.....like a hose type thread. I saw a lot of MIP type threads, but no NTP's.

Does Lowes/HD have a 3/4" tap this size? Is it a common one?
NPT (national pipe thread) is what you need, yes any big box store should have the plugs and taps.
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  #16  
Old 05-12-2013, 11:08 AM
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I had the same problen a few years back, I chased the threads with a 3/4 NPT tap then installed 1/4 turn ball valves on each side. Now when I winterize I just turn the valves to drain, no more removing the plugs.
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  #17  
Old 05-12-2013, 11:08 AM
blakekrone blakekrone is offline
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Originally Posted by j.mccreight@hotmail.com View Post
NPT (national pipe thread) is what you need, yes any big box store should have the plugs and taps.
On the contrary none of the big box stores here in my area had NPT plugs nor taps. I ended up getting plugs from the local MC dealer and Northern Tool had a tap set that included the 3/4" I needed.
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  #18  
Old 05-12-2013, 11:13 AM
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Find a sears hardware, they should have them...
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  #19  
Old 05-12-2013, 11:37 AM
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Originally Posted by Ski-me View Post
OK, I now also have the same problem. I'm trying to determine if the 3/4 NTP is the same thread size/pitch as the 3/4" galvanized plug at Lowes (or the 3/4" gas black pipe). The threads line up with my old plug. I just want to make sure before trying to get these one.

I couldn't find a brass fitting (tee, reducer) to match the same thread pitch. The ones I found were more coarse.....like a hose type thread. I saw a lot of MIP type threads, but no NTP's.

Does Lowes/HD have a 3/4" tap this size? Is it a common one?
Look at a piece of threaded black pipe- the thread is tapered, to ensure a good seal when it goes into a fitting.

Go to an ACE hardware store- they have a set of sliding panels with bins, filled with brass fittings.
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  #20  
Old 05-12-2013, 11:59 AM
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Look at a piece of threaded black pipe- the thread is tapered, to ensure a good seal when it goes into a fitting.

Go to an ACE hardware store- they have a set of sliding panels with bins, filled with brass fittings.
So, if it's tapered, will a 3/4" -14 tap work to clean out the threads?? I'll check out Ace today if I can break away......

The plug I pulled out matches the black pipe but whose to say the old one is correct. I guess I'll have to assume it is after all these years.
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