Welding End Caps to Reducing Tee
Welding End Caps to Reducing Tee
(OP)
Hi
since I'm not well versed in Welding, my question is Can one weld 24" end caps to run of the 24"x10" Red.tee (Hydrostatic testing)Mat. A234-WPB and cut them away after testing without damaging the bevels on the Tee ? so it could be welded again in the 24" header? As it was mentioned, can I use pup pieces and then Cap them and after test cut the caps but leave the pups and weld the Tee with the pups in the main 24" line after cutting back the Pup pieces to fit?
Thanks in advance
since I'm not well versed in Welding, my question is Can one weld 24" end caps to run of the 24"x10" Red.tee (Hydrostatic testing)Mat. A234-WPB and cut them away after testing without damaging the bevels on the Tee ? so it could be welded again in the 24" header? As it was mentioned, can I use pup pieces and then Cap them and after test cut the caps but leave the pups and weld the Tee with the pups in the main 24" line after cutting back the Pup pieces to fit?
Thanks in advance





RE: Welding End Caps to Reducing Tee
On our 24" steam lines we will target the line and then weld on cap for the hydro. We have a lot tees in our system where the run was caped for future expansion. I have used pup pieces but I can't recall leaving one installed.
Also I have used a pup piece with a reducer and smaller flange to failitate hydrotesting.
When you are doing this use the same weld procedures as the piping code calls for.
RE: Welding End Caps to Reducing Tee
Thankfully, most of those bigger fittings have plenty of meat in them to stay above min wall when it happens, and the situation can typically be rectified with some grinding and weld build-up.
RE: Welding End Caps to Reducing Tee
What's your hydro pressure" There are bolt-on temporary fittings that might work for a shop hydro.
RE: Welding End Caps to Reducing Tee
RE: Welding End Caps to Reducing Tee
RE: Welding End Caps to Reducing Tee
flanges are bad news in 24" steam lines. The only flanges we have in our 24" steam lines are at the PRV and RV.