The Omnipure K-Series K2333 filters feature 1/4" and 3/8" Quick-Connect fittings that make this filter really easy to install and replace. It can be used in refrigerators, ice makers, any reverse osmosis system and many under-counter water filtration systems. It also helps remove chlorine taste and odor, and taste and odor in the water.
**Interchangeable carbon with T28, T33 and T40 models.
| National Pipe Thread (NPT) Size Measured Against a Ruler* | |
| Actual Diameter (Inches) |
National Pipe Thread (NPT) (Fractional) |
| 0.405" | 1/8" |
| 0.540" | 1/4" |
| 0.675" | 3/8" |
| 0.840" | 1/2" |
*NOTE: A very common misconception is that a 1/4" NPT measures as 1/4 inch on a ruler or tape measurer. However, that is not the case. NPT will measure larger in diameter. Above is a sizing reference to help clarify.