---
product_id: 223866737
title: "Waterdrop AP431 Replacement Cartridge for Aqua-Pure AP431 Hot Water Scale Inhibitor for AP430SS, Prevent Scale Accumulation and Protect Water Heaters, Pack of 1"
brand: "waterdrop"
price: "€ 52.81"
currency: EUR
in_stock: true
reviews_count: 8
category: "Waterdrop"
url: https://www.desertcart.gr/products/223866737-waterdrop-ap431-replacement-cartridge-for-aqua-pure-ap431-hot-water
store_origin: GR
region: Greece
---

# 6-month extended lifespan 10 GPM stable flow Anti-burst BPA-free housing Waterdrop AP431 Replacement Cartridge for Aqua-Pure AP431 Hot Water Scale Inhibitor for AP430SS, Prevent Scale Accumulation and Protect Water Heaters, Pack of 1

**Brand:** waterdrop
**Price:** € 52.81
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your water flowing flawlessly—because your home deserves the best!

## Quick Answers

- **What is this?** Waterdrop AP431 Replacement Cartridge for Aqua-Pure AP431 Hot Water Scale Inhibitor for AP430SS, Prevent Scale Accumulation and Protect Water Heaters, Pack of 1 by waterdrop
- **How much does it cost?** € 52.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/223866737-waterdrop-ap431-replacement-cartridge-for-aqua-pure-ap431-hot-water)

## 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

- • **Effortless Flow:** Delivers a consistent 10 gallons per minute, supporting all your domestic water needs without compromise.
- • **Leak-Proof Durability:** Food-grade BPA-free cartridge housing ensures zero leaks and safe water flow under pressure.
- • **Scale-Free Performance:** Premium polyphosphates prevent corrosion & limescale buildup, keeping your appliances running like new.
- • **Long-Lasting Protection:** Replace every 6 months to maintain peak performance and extend the life of your water heaters and dishwashers.
- • **Plug & Play Replacement:** Perfectly compatible with 3M Aqua-Pure AP430, AP430SS, and more for hassle-free swaps.

## Overview

The Waterdrop AP431 Replacement Cartridge is a high-performance scale inhibitor designed to protect water heaters and appliances from corrosion and limescale. Featuring premium polyphosphates and a BPA-free, anti-burst housing, it delivers a stable flow rate of up to 10 GPM. Compatible with multiple 3M Aqua-Pure models, this cartridge ensures long-lasting, leak-free operation with a recommended replacement every 6 months.

## Description

Buy Waterdrop AP431 Replacement Cartridge for Aqua-Pure AP431 Hot Water Scale Inhibitor for AP430SS, Prevent Scale Accumulation and Protect Water Heaters, Pack of 1: Replacement Under-Sink Water Filters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Does the job well. - Super easy to install and prolongs the life of the heater and restores water flow.
Review: Excellent product - Excellent product as promised

## 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 |
|---------------|-------|
| Best Sellers Rank | #36,336 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #270 in Replacement Under-Sink Water Filters |
| Brand | Waterdrop |
| Customer Reviews | 4.6 out of 5 stars 322 Reviews |
| External Testing Certification | RoHS |
| Item Weight | 16 ounces |
| Material | food-grade polyphosphates |
| Product Benefits | Prevent Scale Accumulation |
| Product Dimensions | 2.56"D x 2.56"W x 9.45"H |

## Product Details

- **Material:** food-grade polyphosphates
- **Product Dimensions:** 2.56"D x 2.56"W x 9.45"H
- **Item Weight:** 16 ounces
- **External Testing Certification:** RoHS
- **Product Benefits:** Prevent Scale Accumulation

## Images

![Waterdrop AP431 Replacement Cartridge for Aqua-Pure AP431 Hot Water Scale Inhibitor for AP430SS, Prevent Scale Accumulation and Protect Water Heaters, Pack of 1 - Image 1](https://m.media-amazon.com/images/I/51Kg229IUHL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does the job well.
*by R***C on November 25, 2025*

Super easy to install and prolongs the life of the heater and restores water flow.

### ⭐⭐⭐⭐⭐ Excellent product
*by G***N on December 31, 2025*

Excellent product as promised

### ⭐⭐⭐⭐⭐ good replacement
*by W***D on June 1, 2024*

It fits perfectly without leaking on my water heater and it seems to be working just fine. Good price and so far good performance.

## 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 1
- 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 3

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-08*