The things you will need to install a compression valve are:
- New compression valve - When purchasing a compression valve(s) verify the size required by checking the flex line you will be installing. Many faucets now come with built in flex lines (especially kitchen faucets) so you should make sure to have the right size angle stops before you begin.
- Pipe joint compound - A dab of pipe joint compound on the threads will help the valve tighten just a bit better and make it easier should you ever have to remove it.
- Pliers - Two pairs of pliers are needed; one to hold the valve and one to turn the compression nut.