I fixed my delta 1400 series shower faucet the other day by replacing the valve cartridge with a non-delta brand.
Everything went well, until I turned it on, now the shower pipe is hammering. The tub pipe is fine, no hammering at all.
Any ideal as to why this would happen? I replace the one in the master bath and had no issues at all (I think I used delta brand for that one).
My understanding is that the cause of the hammering is an increase in water pressure in the pipe. The only thing that changed was the new cartridge. Could the after market one be the cause?