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💧 Keep your water flowing smooth and your appliances scale-free — because your home deserves the best!
The Waterdrop AP431 Replacement Cartridge is a high-performance scale inhibitor designed to protect water heaters and other appliances from corrosion and limescale buildup. Featuring premium polyphosphates and a BPA-free, anti-burst housing, it ensures safe, leak-free operation with a stable flow rate of up to 10 GPM. Compatible with multiple 3M Aqua-Pure models, this pack of three cartridges offers a reliable 6-month lifespan per cartridge, delivering consistent water quality and appliance longevity.
| ASIN | B089W6SJF1 |
| Best Sellers Rank | #18,976 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #136 in Replacement Under-Sink Water Filters |
| Brand Name | Waterdrop |
| Compatible Water Purifier Models | 3M SF18-S |
| Customer Reviews | 4.7 4.7 out of 5 stars (733) |
| External Testing Certification | RoHS |
| Included Components | AP431 Replacement Cartridge*3 |
| Item Dimensions D x W x H | 2.56"D x 2.56"W x 9.45"H |
| Item Weight | 1.9 Pounds |
| Manufacturer | Waterdrop |
| Manufacturer Part Number | WD-AP431 |
| Material Type | Food-grade polyphosphates |
| Model Number | WD-W65 |
| Number of Items | 3 |
| Product Benefits | Inhibits Lime-Scale Growth |
| Set Name | Waterdrop AP431 Replacement Cartridge Set |
| UPC | 840814177501 |
| Unit Count | 3.0 Count |
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