Sigma Lavatory Faucet Cartridges
Replace Both Hot and Cold Cartridges? For faucets over 15 years old, if one cartridge needs replacing, we recommend replacing both cartridges at the same time. Cartridges experience similar wear and tear, so if one has failed, the other is likely to need replacing soon. Avoid the inconvenience and labor cost of a second repair in the near future, by replacing both cartridges at the same time. This proactive approach saves you time, reduces labor costs, and eliminates the hassle of dealing with repeated maintenance.
We offer a hot and cold cartridge bundle that is less expensive than buying the cartridges individually and includes free shipping.
16-Point 1/2" Quarter-Turn Cartridges
16-Point 1/2" Quarter-Turn Cartridges Without Middle Threads
20-Point 1/2" Quarter-Turn Cartridges
Splines and Points
The metal stem at the top of cartridges has ridges called splines. The ridges fit into the corresponding grooves within a handle. The splines are measured in points. Each ridge or spline is one point. For example, a 16-point cartridge has 16 splines (ridges).
COUNTING SPLINES A quick way to count the number of splines (ridges) is to count half of the ridges and multiply times two. Or count one fourth of the ridges and multiply by four.