Faucet problems vary depending on the mechanism design.
Because of the different internal workings of varying designs, the number
of problems that are common to all are extremely limited. To learn what's
wrong with your faucet, click on the faucet that looks most like yours.
Ball-type
This faucet has a single-handle over a dome-shaped cap. If you have a
Delta or Peerless single-handle faucet, it’s probably a ball-type.
Disc
If you have a single-handle faucet made by American Standard or Reliant
you probably have a disc design. If you’re not sure whether you have a
disc or a ball-type, you’ll be able to tell by the mechanism after you
remove the handle. The workings of a disc faucet are contained in a cylinder
versus the many internal parts of a ball-type.
Cartridge
Cartridge faucets are available with both single and double handles.
Price Pfister, Moen, Valley and Aqualine faucets are popular cartridge
faucets.
Stem
This is a two-handle faucet design. You can tell a stem faucet by the way
it feels when you turn it off. You should feel a rubber washer being squeezed
inside the faucet. Stem faucets are available under several brand names.