---
product_id: 353560898
title: "AP431 Cartridge, Replacement for Aqua-Pure AP431 Hot Water Scale Inhibitor for AP430SS, Pack of 3"
brand: "waterdrop"
price: "918.15 DT"
currency: TND
in_stock: true
category: "Waterdrop"
url: https://www.desertcart.tn/products/353560898-ap431-cartridge-replacement-for-aqua-pure-ap431-hot-water-scale
store_origin: TN
region: Tunisia
---

# 6-month cartridge lifespan Up to 10 GPM flow rate Premium polyphosphates inhibit scale & corrosion AP431 Cartridge, Replacement for Aqua-Pure AP431 Hot Water Scale Inhibitor for AP430SS, Pack of 3

**Brand:** waterdrop
**Price:** 918.15 DT
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your water flowing smooth and your appliances thriving—scale-free living starts here!

## Quick Answers

- **What is this?** AP431 Cartridge, Replacement for Aqua-Pure AP431 Hot Water Scale Inhibitor for AP430SS, Pack of 3 by waterdrop
- **How much does it cost?** 918.15 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/353560898-ap431-cartridge-replacement-for-aqua-pure-ap431-hot-water-scale)

## Best For

- waterdrop enthusiasts

## Why This Product

- Trusted waterdrop brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Consistent High Flow:** Maintain optimal water pressure with a robust flow rate of up to 10 gallons per minute—no compromises on performance.
- • **Long-Lasting Protection:** Enjoy up to 6 months of reliable scale inhibition, tailored to your water conditions for maximum appliance longevity.
- • **Universal Compatibility:** Direct replacement for 3M Aqua-Pure AP430, AP430SS, SF18-S, and interchangeable with HF8-S and KW431 models.
- • **Effortless Scale Defense:** Protect your appliances from costly limescale buildup and corrosion with advanced polyphosphate technology.
- • **Seamless Fit & Leak-Free:** Precision-engineered BPA-free housing ensures a perfect, anti-burst replacement for your Aqua-Pure system.

## Overview

The Waterdrop AP431 Cartridge is a premium replacement scale inhibitor designed to protect water-using appliances from limescale and corrosion. Featuring BPA-free construction and advanced polyphosphate media, it delivers a stable flow rate of up to 10 GPM and lasts up to 6 months. Compatible with multiple 3M Aqua-Pure models, this pack of three ensures your plumbing and appliances stay efficient and durable.

## Description

With this scale inhibitor cartridge, your water pipes, dishwasher, water heater, washing machine, and other water-using appliances are protected from pipeline corrosion, blockage, and other anomalies caused by scaling. This way, they will work optimally for longer periods.The integrity of pipelines is threatened by rust and blockages caused by hard water. This, in turn, lessens the lifespan of water heaters and other appliances. The greater the amount of limescale, the less efficient your water heater becomes. With the scale inhibitor cartridge, corrosion and limescale will no longer accumulate in your pipes. This product is specially designed to protect your water-using appliances, ensuring that they work optimally for the longest possible time.

## Features

- 【Protects your water-using appliances】: With the premium polyphosphates in this scale inhibitor cartridge, you can worry less about the accumulation of corrosion and limescale, which may block your pipelines. This efficient filter media will keep your water-using appliances—like dishwashers, heaters, etc.—working optimally and for the longest time possible.
- 【Anti-burst properties】: The cartridge housing is made from food-grade BPA-free plastic and fits the original brand perfectly, without any leaks. With its state-of-the-art technology, the scale inhibitor cartridge ensures a safe water use experience.
- 【Fast water flow】: With a continuous flow of filtered water at a stable pressure and a flow rate of up to 10 gpm, this scale inhibitor cartridge is designed to provide water for your domestic requirements.
- 【Extended lifespan】: Enjoy clean water by replacing your cartridge every 6 months, which will vary based on water conditions. Throughout this time frame, you will get maximum performance.
- 【Replacement models】: Replacement for 3M Aqua-Pure AP430, AP430SS, and SF18-S Scale Inhibition System. Interchangeable with 3M Aqua-Pure AP431, HF8-S, KleenWater KW431

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B089W6SJF1 |
| Brand Name | Waterdrop |
| Customer Reviews | 4.7 4.7 out of 5 stars (693) |
| External Testing Certification | RoHS |
| Item Weight | 862 g |
| Manufacturer | Waterdrop |
| Manufacturer Part Number | WD-AP431 |
| Material Type | Plastic |
| Model Number | WD-W65 |
| Number of Items | 3 |
| Product Benefits | Inhibits Lime-Scale Growth |
| UPC | 840814177501 |
| Unit Count | 3.0 Count |

## Product Details

- **Brand:** Waterdrop
- **External testing certification:** RoHS
- **Item weight:** 862 g
- **Material:** Plastic
- **Product benefits:** Inhibits Lime-Scale Growth

## Images

![AP431 Cartridge, Replacement for Aqua-Pure AP431 Hot Water Scale Inhibitor for AP430SS, Pack of 3 - Image 1](https://m.media-amazon.com/images/I/71r+OcOtWxL.jpg)

## Frequently Bought Together

- Waterdrop AP431 Replacement Cartridge for Aqua-Pure AP431 Hot Water Scale Inhibitor for AP430SS, Prevent Scale Accumulation and Protect Water Heaters, Pack of 3
- Waterdrop AP431 AP430SS Whole House Scale Inhibitor Filter, Heater Softener System, Prevent Scale Build Up On Hot Water Heaters, Pipes and Boilers
- Waterdrop AP431 Replacement Cartridge for Aqua-Pure AP431 Hot Water Scale Inhibitor for AP430SS, Prevent Scale Accumulation and Protect Water Heaters, Pack of 1

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**Shop now:** [https://www.desertcart.tn/products/353560898-ap431-cartridge-replacement-for-aqua-pure-ap431-hot-water-scale](https://www.desertcart.tn/products/353560898-ap431-cartridge-replacement-for-aqua-pure-ap431-hot-water-scale)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-10-18*