Warranty Info

Warranty Guarantee: 1 year limited warranty

AQUA-PURE-AP430SS

AP430SS 3M Aqua-Pure Water Heater Scale Inhibitor System

Name: AP430SS 3M Aqua-Pure Water Heater Scale Inhibitor System
Brand: Aqua-Pure
SKU: AQUA-PURE-AP430SS
Price: 124.26 USD
Availability: InStock

Low Stock (5)

$124.26

Fits standard 3/4-inch water heater supply line

MAINTAINS EFFICIENCY: By inhibiting scale build-up on heat elements, helps maintain water heater efficiency
EASY TO REPLACE: Easy change-out of the 3M Aqua-Pure AP431 Replacement Water Cartridge makes system maintenance easy
HIGH FLOW RATES: 3/4â€ NPT inlet/outlet connections for easy installation and high flow rates (rated for up to 10 GPM). System to be installed on cold water line feeding the water heater
CORROSION RESISTANCE: 304 stainless steel head can be installed on existing copper pipes in the home. It consists of a corrosion resistant material that provides long service life

Features & Specs

Package Qty: 1

Manufacturer: 3M Purification, Inc

Manufacturer's Id: AP430SS

UPC: 051128889879

Actual Size (in): 10-1/4 inches (length) x 2-3/4 inches (outside diameter)

Media: Siliphos

Primary Filter Media: Phosphate Crystal

Operating Pressure (psi): 25 - 125

Operating Temperature (°F): 40 - 100

Operating Temperature (°C): 0.6 - 37.8

Warranty Guarantee: 1 year limited warranty

Brand: Aqua-Pure

Fitting Size (in): 3/4 inch

Length (in): 10.25 in

Outside Diameter (in): 2.75 in

UPC's For Search: 51128889879

Country of Origin: United States

Fitting Type: NPT

Flow Rate (gpm): 10.0

Instructions

The 3M Aqua-Pure AP430SS Hot Water Protection System installs on the cold water feed line before entering the water heater
Complete installation instructions are included for your convenience
The 3M Aqua-Pure AP430 hot water system cartridge needs to be replaced every 3-6 months with 3M Aqua-Pure AP431 replacement water filter. The cartridge may need to be replaced sooner depending on your water quality and your water usage

Downloads

User Guide

Installation Guide

Certifications

NSF/ANSI Standard 42

Contaminants Reduced

Hard Scale

Filter Life

Filter Life (months): 6 months

Warranty Info

Warranty Guarantee: 1 year limited warranty

Prop65 warning applies to products that contain carbon media. Click here for more details

WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information go to www.p65warnings.ca.gov

Product Details

The 3M Aqua-Pure AP430SS system helps prevent damage to your hot water heater from scale build-up. It inhibits limescale clogging and corrosion by trapping calcium and magnesium, the minerals responsible for hard water. Polyphosphates, included in this product, help to inhibit scale build-up in hot water heaters (both standard (gas or electric) and tank-less styles) and boilers. Increase the efficiency of your water heater system, so it runs cleaner--saving you money on maintenance costs.

Frequently Asked Questions

What does the Aqua-Pure AP430SS Scale Inhibitor System do for my water heater?

The 3M Aqua-Pure AP430SS is a whole-house scale inhibition system specifically engineered to protect tank-style and tankless water heaters from damaging limescale buildup. Using food-grade polyphosphate technology, the AP430SS sequesters hardness minerals (calcium and magnesium) so they stay suspended in the water instead of forming hard scale deposits on heating elements, heat exchangers, and tank interiors. This helps extend water heater life, maintain energy efficiency, and reduce costly repairs.

How long does the Aqua-Pure AP430SS cartridge last before replacement?

The AP430SS uses the AP431 replacement cartridge, which has a service life of approximately 100,000 gallons or 6 months, whichever comes first. Actual cartridge life depends on your water hardness level and household water usage. For homes with very hard water or high daily consumption, you may need to replace the AP431 cartridge more frequently to ensure continuous scale protection for your water heater.

What are the flow rate and technical specifications of the AP430SS?

The Aqua-Pure AP430SS features a stainless steel housing built for durability and is rated for a maximum flow rate of 20 gallons per minute (GPM), making it suitable for whole-house applications. It operates within a pressure range of 25–125 psi and a temperature range of 40°F–100°F. The system uses 1" NPT inlet/outlet connections and is designed exclusively for cold-water installation on the line feeding your water heater.

Is the Aqua-Pure AP430SS NSF certified, and does it soften water?

The AP430SS scale inhibitor system uses FDA-approved, food-grade polyphosphate that complies with NSF/ANSI Standard 60 for drinking water additive safety. It is important to note that the AP430SS is a scale inhibitor, not a water softener — it does not remove hardness minerals from the water. Instead, it chemically sequesters them to prevent scale formation, so you won't notice the "slippery" feel associated with softened water, but your water heater will be protected from scale damage.

Where should the AP430SS be installed in my plumbing system?

The Aqua-Pure AP430SS must be installed on the cold water line directly before your water heater (tank or tankless). Do not install it on the hot water side, as the polyphosphate media is designed for cold-water contact only. The stainless steel housing should be mounted vertically with adequate clearance below for cartridge changes. For tankless water heater protection or larger homes, this dedicated point-of-entry placement ensures every gallon entering your heater receives scale inhibition treatment.

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