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Need some opinions on block drain

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Mike CA

09-02-2007 12:12:49




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Previous owner fitted this quick drain device to the block. I drained out what little water was left in the block and pulled the fitting (in prep to replace it with an original plug.)

It looks like they muscled in this device, because the threads look munched and it comes to a bit of a point, like it didn't fit the block size. I can't see the threads in the block very well to see if they are damaged. I'll take another look when it's dry.

Do you think anyone would be interested in this drain device, or is it junk now?
Should I tap the block threads before putting in a new plug?

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skk-Big red Fan

09-02-2007 20:31:41




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 Re: Need some opinions on block drain in reply to Mike CA, 09-02-2007 12:12:49  
Re tap!!! You should be O.K.



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Tired 300 in Mn

09-02-2007 12:38:31




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 Re: Need some opinions on block drain in reply to Mike CA, 09-02-2007 12:12:49  
Looks like an old vacuum petcock from a dairy barn. Thread was likely correct. Thread damage may have occurred when it was removed from vacuum header. Wouldn't have much value here in Mn. as they were found on every farm 30 years ago. I would use a tap to clean threads before installing new plug. Sonny



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Mike CA

09-02-2007 12:13:24




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 Re: Need some opinions on block drain in reply to Mike CA, 09-02-2007 12:12:49  
I forgot to add the picture.
third party image



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El Toro

09-02-2007 13:06:33




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 Re: Need some opinions on block drain in reply to Mike CA, 09-02-2007 12:13:24  
I would keep using that block drain. It would be easy to drain the block into a container. Hal



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Janicholson

09-02-2007 12:32:24




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 Re: Need some opinions on block drain in reply to Mike CA, 09-02-2007 12:13:24  
Poke in there with a stiff wire and clean the scale out. then use a wire brush for 3/4" soldered pipe fittings to clean the threads (handy little wire brush for many tasks) The threads are 1/2" NPT tapered pipe threads, and should be "pointed". They need to have a pipe thread tap put into the hole and cleaned up. Be sure the cutting edges match the original threads in the block and are started straight. Take out only a minimum of material to get it clean enough to put in a new plug. with a square head. Use one wrap of teflon tape on the threads of the new plug to assure a good seal.
The old petcock is toast, but brass is recycled. Jim

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