Home › Four Mechanisms, Told Apart From the Handle

Four Mechanisms, Told Apart From the Handle

Almost every faucet in an American house is one of four things inside, and you can usually work out which from how the handle moves.

Briefly

Four mechanisms cover almost every faucet: compression, ball, cartridge and ceramic disc. They can be told apart from the handle alone — how far it turns, whether it lifts, and whether there are one or two. That decides the repair and the part.

FaucetMend is a referral service, not a contractor. We connect homeowners with independent contractors. Contractors are required to hold whatever credential their state or municipality demands. We carry out no work, we sell no fixtures, we do not set prices, and we never charge homeowners anything — the contractors in our network pay us when we route them a call. Nothing here is a statement about the water at any address; only a test of that water can tell you about it.

The handle test

Two separate handles that screw down, getting stiffer as they close, and stop at a definite point: compression. One handle that lifts for flow and swings for temperature, with a rounded body under a domed cap: ball. One handle that lifts and swings but turns smoothly through a quarter turn with no tightening: cartridge. Two handles that each turn only a quarter or half turn, smoothly, with no stiffening: ceramic disc.

That is not a certain identification and it does not need to be. It is enough to say the right thing on the telephone.

Compression, and why it is the oldest

A rubber washer is screwed down against a metal seat. It is simple, it is repairable with parts that cost almost nothing, and it wears by design — every close crushes the washer a little.

The part that decides whether the repair holds is the seat rather than the washer. If the seat is pitted, a new washer drips again within months.

Ball, cartridge and disc

A ball faucet has a slotted ball moving over inlet seats with springs under them; it has the most separate small parts of the four and the highest chance of a rebuild kit being the honest answer. A cartridge faucet replaces the whole moving assembly as one unit. A ceramic disc faucet has two polished discs shearing across each other and is the most durable of the four, but it dislikes debris.

The practical difference is repairability. Compression and ball are usually rebuilt. Cartridge is usually swapped. Disc is usually fine until something got into it.

Why the brand matters more than you would expect

Cartridges are not interchangeable between manufacturers, and often not between ranges from the same manufacturer. That is the single most common reason a faucet repair needs a second visit.

If there is a name on the escutcheon or the handle, say it on the call. If there is a model number under the sink or on the original paperwork, that is better still.

And where the age of it comes in

A faucet old enough to be hard to get parts for is also likely to predate the 2014 line, which is a second reason the same question keeps arriving at the same place.

Know the maker? Say so on the call.Cartridges are specific to a manufacturer, and the name on the handle is frequently the difference between one visit and two. We route you to a contractor covering your area, chosen on the ZIP code you give, free of charge to you. Faucets are simply our subject; the number itself handles any plumbing request.

Call (888) 754-1330