Welding P1 to P5B (5%) (A217 C5 valve to A106 pipe)

[Trebormech]

I am looking at the replacement of a check valve in a boiler feedwater line. The new valve is 5% Cr cast. The piping is A106 CS. Can this be done with the proper preheat, PWHT, and electrode selection? Is this weld even allowed in the ASME boiler code? Would there typically be a buttering process needed for the weld procedure?

Thank you.

Trebormech

 

[weldstan]

Don't double post, please.