The Long Overflow Hole vs The Round Overflow Hole, Which One is Better for Ceramic Basin?
For a ceramic basin, it is important to drain the water out after using it. Usually, the water goes to the overflow hole (if the ceramic basin has one), then to the drain hole. And you might have noticed that there are some different shapes of the overflow hole. The most common is the round overflow hole shape, then the long strip shape.
1. What are the differences between the long strip overflow hole and round overflow hole?
- Design is the main difference
- As an experienced sanitary ware purchaser, you would have known that the round overflow shape is the most popular and classic design for a ceramic vanity basin or washbasin. As for long strip shape, it looks more high-end and unique.
2. Which brands have the long strip overflow hole shape design?
- Villeroy-Boch
- Laufen
- PORCELANOSA
- etc.
3. Does the overflow shape affect the overflow rate of a ceramic basin?
- It would affect the overflow rate because of the different overflow shape designs. Currently, for SUNREX round overflow ceramic basin, the overflow rate is 0.27L/s to 0.28L/s (L/s means Liters per second), and it passes the CE standard, overflow class rating CL25.
4. Is it okay if we ask our Chinese manufacturer to change the overflow shape design?
- For a standard ceramic basin, the overflow shape is already made in the mold. So changing an overflow shape means changing the mold.
- For per design per size, a new custom mold of ceramic vanity basin (including a mother mold and production molds) takes about US$4,700. And the annual purchasing quantity shall be over 3,000 pieces per design per size (P.S.: the mold cost and annual purchasing quantity change with different suppliers). Only in this way could make the custom molds meaningful and profitable for your company.
- So it is better for you if the overflow hole shape is designed well by the supplier. Then you could save the costs to re-make the design.
5. Current designs with long strip overflow hole shape in SUNREX
Now for SUNREX, these 5 designs are with the long strip overflow hole. The series include: 90A, 90S, 90H, 50A, 50H.
Tiffany Ho
Facebook
Twitter
LinkedIn
EN 
ES 
FR 
AR 
DE 
1 thought on “The Long Overflow Hole vs The Round Overflow Hole, Which One is Better for Ceramic Basin?”
Great comparison between the long and round overflow holes for ceramic basins, It’s really helpful to understand the practical differences between these two options, especially when it comes to preventing water overflow and ensuring the longevity of the basin. I appreciate how the article highlights the advantages of the long overflow hole in terms of both functionality and design. It would be interesting to learn more about how these different overflow designs impact maintenance, particularly in terms of cleaning and long-term durability. Overall, this is an informative resource for anyone selecting a ceramic basin that combines both style and practical considerations.