I know sweat soldering a ball valve is best, but will a "push-ft" compression "Viperlok" brand ball valve work?---My pipes are old copper, and have a few minor scratches and pits---I also noticed a seam running down one side of pipe. This water line runs out into garden, but valve is in the house. Original gate valve doesn't close all the way---It still trickles water. I'd like to install the compression valve next to the gate valve---Idea is not to half to solder. I'm worried that the seam or tiny pits might prevent a good seal.--- Any suggestions?