
Will this fit my drain and do I need tools to install it?
It fits standard 3-inch drains. Please measure the inner diameter before buying; it fits sizes between 2.9'' and 3.1''. No tools are needed—just press it directly into the pipe.
Will this seal cause slow drainage or water backup?
No, it features a high-flow design. The hinged valve opens fully up to a 90-degree angle under water pressure, allowing a rapid drainage speed of up to 1.1 Liters/second (17 GPM) so water and debris can pass through instantly.
COLDDD Drainage & Odor Control Series

Will this fit my drain and do I need tools to install it?
It fits standard 3-inch drains. Please measure the inner diameter before buying; it fits sizes between 2.9'' and 3.1''. No tools are needed—just press it directly into the pipe.
Will this seal cause slow drainage or water backup?
No, it features a high-flow design. The hinged valve opens fully up to a 90-degree angle under water pressure, allowing a rapid drainage speed of up to 1.1 Liters/second (17 GPM) so water and debris can pass through instantly.
COLDDD Drainage & Odor Control Series
![]() BZ03 | ![]() GZDL | ![]() BZ02 | ![]() ZJDL |
|---|---|---|---|
| Customer Reviews | |||
| — | — | — | — |
| Price | |||
| — | — | — | — |
| Material | |||
| Silicone, Plastic | 304 Stainless Steel,Silicone, | Silicone, Plastic | Silicone, Plastic |
| Applicable drain hole size | |||
| 3'' | Standard 2-inch (1.9''-2.2'') | Standard 2-inch (1.9''-2.2'') | 1.9''-3.9'' |
| Service Life | |||
| 12 months | 18 months | 6 months | 12 months |
| Drainage speed | |||
| 1100ml/s | 500ml/s | 500ml/s | 500ml/s |
| Working Principle | |||
| Spring Valve | Magnetic closure valve | Magnetic Poppet Valve | Magnetic closure valve |
| Applicable Scenario | |||
| floor drain | Sink, floor drain | Sink, floor drain, bathtub | Sink, floor drain, bathtub |

















