Here's how to measure a commercial sink drain for replacement parts or accessories.
To accurately measure a commercial sink drain, particularly when needing replacement parts like drain covers or strainers, the process is straightforward:
- Remove the Drain Cover: First, you must remove the drain cover/grate that is currently in the sink drain opening.
- Measure the Diameter: Next, measure the diameter directly at the top of the drain hole itself. This measurement is crucial as it indicates the size of the opening where a new part will sit or fit into.
- Determine Size: Use the measured diameter to find the corresponding standard commercial drain size.
- Round Up if Needed: When in doubt, round up to the nearest size to ensure a proper fit, as a slightly larger diameter measurement for a part is generally preferable to one that is too small.
Measuring the top diameter ensures that any new component, whether it's a drain basket, strainer, or cover, will correctly fit the opening.
Why Accurate Measurement Matters
- Proper Fit: Ensures replacement parts function correctly and create a seal if necessary.
- Drain Efficiency: Prevents large debris from entering the drain system, reducing clogs.
- Hygiene: A well-fitting drain cover contributes to sanitation.
Common Commercial Sink Drain Sizes
While you should always measure your specific drain, commercial sinks often use standard drain sizes. Here's a general idea (measurements are approximate nominal sizes):
| Nominal Size | Typical Top Diameter | Common Use |
|---|---|---|
| 1.5 inch | ~1.5 - 1.75 inches | Smaller prep sinks |
| 2 inch | ~2.0 - 2.25 inches | Medium compartment sinks |
| 3.5 inch | ~3.5 - 4.0 inches | Standard dish sinks |
Note: Always measure your specific drain opening, as variations exist.
Steps for Measuring (Review)
- Clear the sink area.
- Remove the existing drain cover or grate.
- Use a ruler or measuring tape to find the distance across the widest part of the circular opening at the very top.
- Record the measurement.
- Round up to the nearest common drain size if your measurement falls between standard options.
Following these steps will help you find the correct size for your commercial sink drain needs.
