Sweat or NPT Mixing Valve?

[velvetfoot]

Material is 1.25" copper, valve is Caleffi 280. There shouldn't be any problem sweating it, should there? The cartridge is replaceable, so I guess it could be taken out.

 

[BoilerMan]

Sweat all the way, remove the wax element and open any ball valves. I like to use a wet rag wrapped over the valve while sweating. 1.25" you'll need MAPP gas, propane will not heat a valve that size.

TS

 

[woodsmaster]

I would think either would be fine, put some unions in in case you ever need to change it.

 

[velvetfoot]

Thanks for the tips guys. I learned that the Caleffi comes with unions, so it seems to be just a matter of of sweating on the unions. No sweat.

 

[Bob Rohr]

I would think either would be fine, put some unions in in case you ever need to change it.

The valve has union connections, pipe it in, loosen unions, remove valve, solder, and re-assemble. Same with the NPT version, which has male NPT tailpieces instead of sweat..

No need to take the valve apart.