Step 6 · Install New Angle Stop
Take the new angle stop and disassemble it. Slide the new compression nut onto the cleaned copper pipe first, ensuring the threads face outwards, towards you. Next, slide the new brass ferrule (compression ring) onto the pipe. The tapered end of the ferrule should face away from you, towards the wall and the valve body. Push the new angle stop valve body firmly onto the pipe until it bottoms out against the ferrule. The pipe should extend about 1/2 to 3/4 inch into the valve.