Re: Plumbing pitch puzzle

On Wed, 23 Apr 2025 23:57:40 -0000 (UTC), bp@www.zefox.net wrote:

Leon Fisk <lfiskgr@gmail.invalid> wrote:

On Wed, 23 Apr 2025 16:44:40 -0000 (UTC)
bp@www.zefox.net wrote:
 

I'm trying to revive an old airless paint sprayer (Wagner W500) and
made decent progress until I met the fitting on the paint reservoir.

<snip>
 
Is this two page parts pdf your machine? If so pass on the part number
and page you're talking about. Would help to visualize the part...
 
https://airless.com.au/documents/Wagner-W500-Manual.pdf
 
Maybe #11 on page 2?

>
Yes on all counts. I've put a photo at
http://www.zefox.net/~bp/wagner_paint_sprayer/inlet_port.JPG
Perhaps the oddest thing is the rounded thread profile, almost
like a Whitworth pattern.
>
Wagner claims to have the reservoir in stock for $135, but I'd
like to see how the sprayer behaves using a pickup tube. The bore
of the fitting is 13 mm, so a half inch tube will fit inside, an
o-ring over the tube can form a gland seal if I convert the brass
insert into a compression nut.
>
Thanks for writing,
>
bob prohaska

There is a standard thread that looks like that listed in Machinery's
Handbook.  Something like Dardelet.

Joe