# Numhew 1-Piece Bath Hardware Set Floor Drain Seal with Spring Loaded Backflow Preventer Valve in Matte Black for Shower

**Brand:** [Numhew](https://shop.coreranger.com/brands/Numhew)
**SKU:** B7D2Y7M5
**Price:** $60.99 · in stock
**URL:** https://shop.coreranger.com/product/numhew-1-piece-bath-hardware-set-floor-drain-seal-with-spring-loaded-backflow-preventer-valve-in-mat-342948034

## Specifications

| Spec | Value |
|---|---|
| Model # | B7D2Y7M5 |
| Features | No Additional Features |
| Included | Mounting Hardware |
| Pack Size | 1 |
| Internet # | 342948034 |
| Returnable | 90-Day |
| Store SKU # | 1016033396 |
| Color Family | White |
| Color/Finish | White and Black |
| Finish Family | No Finish |
| Bar Length (in.) | 2.7 |
| Number of Pieces | 1 |
| Bath Accessory Type | Bathroom Hardware Set |

## Description

This floor drain seal is designed for standard 3 in. diameter pipes and floor drains commonly found in basements, laundry rooms, bathrooms, and garages. It uses a stainless steel spring to actively close the hinged flapper, ensuring consistent sealing without material fatigue. The flapper opens fully to 90 degrees under water pressure, supporting fast drainage up to 1.1 liters per second. Its mechanical action avoids the gradual loss of seal integrity seen in passive silicone designs. The unit fits securely into PVC or ABS pipes without adhesives or tools. A rubber gasket ring creates an immediate leak-resistant connection upon installation. It blocks sewer gases and prevents backflow during heavy rainfall by maintaining constant spring tension. This design eliminates slow drainage caused by restrictive diaphragm seals while handling debris more effectively.

• Drains up to 1.1 L/min. for efficient water drainage
• Spring-loaded valve prevents wastewater backflow
• Fits standard 3 in. floor drain pipes and PVC or ABS pipe