Taco 5000 male union size/substitute?

[whackit]

Hi Gang,

I have a situation where I need to troubleshoot about a dozen Taco 5000 series mixing valves. They all have sweat unions so I’m lookin to make a bypass and a plug so I can run the setups without the mixing valves (bypass the tank hot to supply hot and plug mixing cold inlet). Does anybody know a fitting I can use for where the mail side of the mixing valve would connect to the union? I really don’t want to have to unsweat/resweat all of these. That would be no bueno.

 

[WorthFlorida]

Not sure what your set is since there is no such thing as a sweat union. I'm assuming the copper pipe is sweated on and the compression fittings were not used? Check out this PDF file. It might give you some ideas.

https://s3.amazonaws.com/s3.supplyhouse.com/product_files/Taco-5000-3-Build-Your-Own.pdf

 

[Sponsor]

 

[whackit]

Not sure what your set is since there is no such thing as a sweat union. I'm assuming the copper pipe is sweated on and the compression fittings were not used? Check out this PDF file. It might give you some ideas.

https://s3.amazonaws.com/s3.supplyhouse.com/product_files/Taco-5000-3-Build-Your-Own.pdf

that picture is the same setup I have. So I’m looking to connect the female sides of fitting to a male fitting that is the same as the valve. That way I can remove valve. Insert fitting I make ( bridge hw and plug cw) and test without having to do a bunch of temporary sweats, remove insulation etc.

 

[Fitter30]

All three unions are probably special because they have a gasket in them. Why not buy another body then swap them? If water quality is bad they will have to be soaked to clean.

 

[whackit]

All three unions are probably special because they have a gasket in them. Why not buy another body then swap them? If water quality is bad they will have to be soaked to clean.

I need to run the circuits with no mixing valve... long story. So I need to remove the mixing valve, connect the two hot lines, and plug the cold line where the valve was. I guess I could just buy a mixing valve and gut it and tap a plug in the cold side. Was hoping someone might have some simple knowledge.

 

[Fitter30]

Manufacturers make almost everything just a little different just enough that it not easy to replace any part easily. With body in hand might find a dielectric union it would be a long shot.