Deep Water Seal vs. Shallow Water Seal for Shower Drains: Which One is Better?

In our daily lives, we often encounter drainage covers, and there are significant performance differences between different types. So, should we use deep water seal or shallow water seal for shower drains?

Should Shower Drains Use Shallow or Deep Water Seal?

It is advisable to prioritize deep water seals. According to relevant domestic standards, the height of the drain should reach 5 centimeters, while shallow water seals cannot meet this standard and can easily dry out. High-rise residential buildings must ensure that the height of the downspout is sufficient to install deep water seal drains. If it is insufficient but you still want to improve the effect, you can consider purchasing magnetic drainage covers in the market, which can provide good sealing performance.

What Aspects Should Be Considered When Purchasing a Drain Cover?

1. There are many types of drainage covers available in the market, each with different functions. Generally, they can be divided into ordinary types and those specifically designed for washing machines. The latter usually features a removable round cover in the middle, allowing the washing machine's drainage pipe to be placed without interfering with surface water drainage.

2. The materials for drains also vary widely, including cast iron, PVC, ceramic, stainless steel, etc. Among these, drains made from stainless steel and copper alloys are appropriately priced, visually appealing, and durable. However, considering overall performance, brass drains are the best option.

3. The main purpose of a drain is to prevent debris from entering the sewage pipe and to facilitate water drainage. If the drainage speed is too slow, it can lead to overflowing water. Therefore, when selecting a drain, it is essential to ensure that the space in the middle of the drain is sufficiently large to allow water to flow without obstruction.

4. Over time, drains can breed bacteria, leading to unpleasant odors. So, when purchasing, it is necessary to also consider odor prevention.

In summary：the above information discusses drain covers. From the article, we can see that for shower drains, it is preferable to choose deep water seals, as shallow water seals cannot meet the required standards. However, when actually selecting a drain, it is important to consider multiple factors to ensure smooth drainage without unpleasant odors. I hope this information is helpful to everyone.