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crisonic
PostPosted: Tue Jul 13, 2021 11:06 pm 
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Does anybody know the thread size of the valve where it mounts onto the hydro connector?

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gtogreen1969
PostPosted: Tue Jul 13, 2021 11:52 pm 
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crisonic wrote:
Does anybody know the thread size of the valve where it mounts onto the hydro connector?


External thread on a tyre valve is 0.305 inches (7.7mm) and 32 threads per inch
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crisonic
PostPosted: Wed Jul 14, 2021 11:54 am 
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Thank you for the info but it is the thread on the other end of the valve that screws into the pipe connector that I am after. Anybody know what it is?

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gtogreen1969
PostPosted: Wed Jul 14, 2021 3:21 pm 
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crisonic wrote:
Thank you for the info but it is the thread on the other end of the valve that screws into the pipe connector that I am after. Anybody know what it is?

No sorry I don't.
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drmini in aust
PostPosted: Wed Jul 14, 2021 3:28 pm 
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I made a fitting for my hydro pump by soldering a drilled brass valve cap into a BSP brass nipple. It's still working, 30 years later.
I use an O ring inside the cap to seal.

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Bill B
PostPosted: Wed Jul 14, 2021 4:05 pm 
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Attachment:
Schrader valve and Union.jpg

Do you mean this thread on the schrader valve to hydro union?

If so, it is 1/8 inch BSPT (tapered). Same thread as the brass drain plug from my mini K original radiator, next to valve in photo.


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crisonic
PostPosted: Wed Jul 14, 2021 11:02 pm 
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Thank you Bill.That is the thread details I wanted. Thank you to everyone who replied

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