How to Replace the Angle Stop and Supply Line

Easily replace the angle stop and supply line in a bathroom.

Materials and Tools:

  • brush
  • crescent wrenches
  • rags
  • supply lines
  • faucet grease
  • white vinegar

Step 1: Remove the angle stop

  • Disconnect the water line where it connects to the valve using a crescent wrench.
  • Next, remove the angle stop — use two wrenches, one to hold the compression nut and one to hold the angle stop.
  • To loosen, remember to turn the compression nut, not the angle stop.

Step 2: Replace the Water Supply Line

Remove and replace the crimped water supply line. Use a stronger, reinforced supply line and add a new brass quarter turn angle valve.

Step 3: Reattach the new Line and Valve

  • First remove the compression nut and slide it over the copper nipple.
  • Replace the compression sleeve and tighten using two crescent wrenches — one wrench holds the angle stop in place, the second wrench tightens the nut.

Step 4: Remove the Stem (valve that is controlled by the faucet handle)

  • To clean it, first remove the stem, again using two crescent wrenches, one to hold the nut underneath the sink and one to turn the top.
  • Once removed, disconnect the part of the stem for thorough cleaning.

Step 5: Clean the Stem and Reattach

  • Scrub the stem clean with a brush, removing any caked-on debris before soaking in white vinegar.
  • After soaking, lubricate the working parts of the stem assembly with faucet grease and reattach.

 

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