PVC for pressure relief drain?

[whackit]

Hi Gang,

I need to install a steam bath generator in a 3rd floor attic. It has a TP valve and a drain pan I need to run to the exterior. Because of a strange location and complex interior layout it's about 80' before I can daylight this line. I would rather just do it in PVC to save the owner the $$. I would probably run the first 5 feet or so in CU and then transition to 3/4 pvc. Does anyone know if this is problematic? (I'm under UPC)

Thanks

 

[hj]

Of course it is "problematical" the discharge will NEVER cool down enough to NOT melt the PVC.

 

[Sponsor]

 

[Gary Swart]

My suggestion is to use galvanized pipe. It's not too expensive and because it will rarely have water in it, it will last virtually forever. I doubt that an inspector would approve of PVC for the reason HJ offered.