Brand
Sigma faucet stems and cartridges
4 Sigma stems, cartridges and valve parts indexed by part number, with length and broach for each so you can match the one you pulled out.
Not sure which one you have? Identify it by measurement or read how to measure a stem.
Sigma part index
Lengths are overall length in inches. On a phone, swipe the table sideways to see every column.
| Part number | Also listed as | Type | Length (in.) | Broach | Material | Notes | Replacement |
|---|---|---|---|---|---|---|---|
| 18.30.082 | Thermostatic cartridges | 3.43 (3-7/16) | Square | Brass | |||
| 18.30.156 | Stop stems | n/a | Brass | ||||
| 18.30.219 | Single-handle cartridges | 1.64 (1-5/8) | 20-pt spline | Plastic | 22mm dia. | ||
| 18.30.895 | Stop stems | n/a | Brass |