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3M Aqua-Pure Whole House Scale Inhibition Inline Water System AP430SS, Prevents Scale Build Up On Hot Water Heaters and Boilers

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Availability: 13 left in stock
Fulfilled by Plumbing Planet

Arrives Mar 16 – Mar 21
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Size: 1 Count (Pack of 1)


Style: AP430 System


Features

  • Helps Inhibit Scale: Polyphosphates included in This Product bind calcium and magnesium hardness minerals, preventing them from becoming a solid to help reduce the build-up of mineral scale in pipes and water using appliances
  • Helps Protect Hot Water Heaters: Extend the life of water-using appliances such as water heaters, clothes washers and dishwashing machines, as well as plumbing fixtures like faucets, pipes and shower heads by reducing scale build-up and corrosion
  • Not a Filter, A Scale Reduction System: System diverts only a small portion of water passing through the system head into the cartridge to inject polyphosphates in minute concentrations and return it to the water supply to help reduce scale build-up
  • Minute concentrations of polyphosphates help reduce scale build-up by inhibiting the build-up of hardness minerals onto metallic surfaces. Polyphosphates also help reduce corrosion by forming a thin protective layer on the inner-surface of pipes
  • Maintains Efficiency: By Inhibiting Scale Build Up On Heating Elements, Helps Maintain Water Heater Efficiency
  • Easy To Replace: Easy Change Out Of The 3M Aqua-Pure Ap431 Replacement Water Cartridge Makes System Maintenance Easier
  • High Flow Rates: The AP430SS provides unrestricted flow of up to 10 gpm (37.9 lpm) when installed with 3/4 NPT inlet/outlet connections
  • System is to be installed on cold water line feeding water to the water heater. Included System Head fittings are two 3/4" NPT (female) connections. Additional parts and tools are required for installation and not included
  • For parts and tools required, read all instructions carefully and measure your cold water line feed pipe before attempting to start installation

Description

The 3M Aqua-Pure Whole House Scale Inhibition Inline Water System Ap430Ss Is Designed To Help Reduce Scale Build-Up And Corrosion - Thereby Helping To Extend The Life On Hot Water-Using Appliances Such As Water Heaters (Standard (Gas Or Electric) And Tank-Less), Boilers, Clothes Washers And Dishwashing Machines, And On Plumbing Fixtures Like Faucets, Pipes, And Shower Heads. The Ap430Ss Provides Flow Of Up To 10 Gpm With ¾” Npt Inlet/Outlet Connections. Scale Is Calcium And Magnesium Deposits That Often Form When Hard Water Is Heated. Water Hardness Is Responsible For Most Scale Formation In Pipes, Water Heaters, Finishes And Flat Surfaces, And Other Water Using Appliances. Over Time Scale Build-Up Can Significantly Shorten The Life Of Any Water-Using Appliance. Also Scale Buildup Inside Pipes Causes Loss Of Water Pressure As The Interior Gets Smaller And Smaller Over Time. The Ap430Ss Contains Polyphosphates To Bind Calcium And Magnesium Hardness Minerals, Helping To Prevent Them From Precipitating Out (Or Becoming A Solid) And Building Up On Metallic Surfaces. Polyphosphates Also Helps Prevent Corrosion By Forming A Thin Protective Layer On The Metal Surface. The 3M Scale Inhibition Water System Ap430Ss Is Tested By Nsf International To Nsf/Ansi Std. 42 For Material And Structural Requirements Only. The Overall Single Vessel/Cartridge Design Of The Ap430Ss Makes The 3M Aqua-Pure Ap431 Water Filter Cartridge Change-Out Easy For Professionals As Well As End Users. Change Disposable Filter Cartridge Every 6 Months Or Sooner If You Observe Noticeable Reduction In Water Flow Rate. The Ap430Ss Is To Be Installed On The Cold Water Supply Line Of The Water Heater Or At Point-Of-Entry Of Water Into The Home. Tools And Parts Required (Not Included): One ¾” Stop And Waste Valve (Compression Type), Ptfe Tape, Two ¾” Male X ¾” Street Adapters, One ¾” Compression Gate Valve, And Pipe Cutter. Read All Instructions Carefully Before Attempting To Start Installation. The Existing Shut-Off Valve Remains In Place And Still Acts As The Cold Water Shut-Off. This Filter System Has 3/4” Connections. The Ap430Ss Can Be Adapted To Various Pipe Sizes By Using Reducing Adapter On Either End. Installation Fittings Can Be Sweated Or Threaded. Use Galvanized Fittings For Installation On Galvanized Pipe.

Material: Polypropylene (PP), Stainless Steel


Product Dimensions: 2.8"D x 2.8"W x 10.2"H


Item Weight: 0.86 Kilograms


External Testing Certification: NSF


Product Benefits: Extends Life of Appliances, Inhibits Lime-Scale Growth


Material: Polypropylene (PP), Stainless Steel


Product Dimensions: 2.8"D x 2.8"W x 10.2"H


Item Weight: 0.86 Kilograms


External Testing Certification: NSF


Product Benefits: Extends Life of Appliances, Inhibits Lime-Scale Growth


Brand: Aqua-Pure


Set Name: AP430SS


Global Trade Identification Number: 74


Unit Count: 1.0 Count


Compatible Water Purifier Models: 3M AP430SS


Number of Items: 1


Item Weight: 1.89 pounds


Department: Unisex-Adult


Manufacturer: 3M


Item model number: 70020003060


National Stock Number: 5130-01-073-0811


Is Discontinued By Manufacturer: No


Date First Available: May 2, 2005


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Mar 16 – Mar 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • You can trust 3M Aquapure products. Definitely commercial grade that can be used for residential!
Size: 1 Count (Pack of 1) Style: AP431 Cartridge
We have several different 3M Aquapure products in our home and this AP431 whole house scale reducer is one of them. Initially you need to buy the kit as it comes with the special "T" fitting. Afterwards you can just buy the cartridges itself periodically. Side note, it's not a bad idea to stock up on these as the prices have gone up significantly since we started buying these about right (8) or so years ago. We got it primarily to protect our appliances such as our tankless water heater, shower heads, kitchen faucet and washer. So far we have zero issues to date! What also might be helping is our whole house water filtration system which takes care of sediment, rust, etc. at the source. Please see my attached photos of the cartridge as well as installed photo. **Last pro-tip** - since the cartridge threads are plastic, it's very easy to cross-thread the cartridge and chew up the threads. An old trick I learned for any screw fitting is to reverse it in first (left-loosey) until you feel the first thread "seat". This trick always ensures you engage the female threads for a perfect, trouble-free install! ... show more
Reviewed in the United States on December 7, 2025 by Broham Dingleberry Broham Dingleberry

  • Works great but needs to be flushed after initial install and filter changes.
Size: 1 Count (Pack of 1) Style: AP430 System
Be sure to flush the filter with something that doesn’t have a fine filters for 5-10 mins or so after installation. I have those electric smart toilets and it filled the bowls with little pieces black plastic and clogged their inline filters. Game changer in water quality. My showers and appliances are as grateful as I am. ZERO spots on the shower doors or sinks. ... show more
Reviewed in the United States on August 30, 2025 by Jamie

  • Easy install
Size: 1 Count (Pack of 1) Style: AP430 System
Excelente and easy to install
Reviewed in the United States on December 29, 2025 by Amazon Customer

  • So far so good, but only time will really tell.
Size: 1 Count (Pack of 1) Style: AP430 System
This is a very hard product to review as it will take years for me to know if it really works or not. I bought it because our Rinnai tankless water heater died from excessive scale build up. The model we had didn't have a bypass option for regular cleaning with vinegar. We replaced the Rinnai with a Navien tankless and even though it has a bypass for descaling and a stainless steel heat exchanger, we thought we'd use the Aqua-pure to protect the inner workings of the Navien from the minerals in our municipal water. Will it work? I assume so. I plan to have our plumber clean it out in a year or two and well see what the water looks like. If it's milky when vinegar is run through it, it's a failure. If it's clear, we have a winner. Now, what I CAN tell you is that I was worried about restricted water flow. We have to separate shower head systems in our Master shower. Not two shower heads, two operate valves, so we need a lot of water pressure to use that shower and run another appliance, like a bath tub or washing machine. I'm happy to report that the Aqua-pure barely reduces water flow. Only under extreme and manufactured circumstances does it produce noticeable reductions. In normal use, I honestly don't notice that it's installed. Since water flow is not affected, I'd say it's worth using to protect my investment in a tankless water heater. ... show more
Reviewed in the United States on June 16, 2016 by PiperFlyer

  • We have SUPER HARD WATER
Size: 1 Count (Pack of 1) Style: AP430 System
This really does work! I do not post reviews often, but this product is worth my time. First, a little history, so that maybe others may benefit from my experience. We have SUPER HARD WATER. I mean it eats through most faucets in 3 years. 5 years-what faucet? It is just a hole in the wall. I have installed both a gas and an electric tankless water heater. I never had any issues with the gas tankless, but with the ELECTRIC Tankless, that is a whole other story. I have a whole house filter, and right after I installed the electric tankless there were issues. Little black charcoal looking rocks began coming out of the faucets as soon as the hot water was turned on for the first few seconds. This created stopped up filters in faucets, shower heads, and all kinds of problems. I was about done with tankless. I guess the superheating of our hard water from direct contact with the elements of the heater caused them. My wife told me to just put a tank back in, and then I saw a suggestion to try this. I told my wife to let me try it, and if it doesn't work, I would put a tank back on. You do have to put this on before the water heater. I don't think it really filters, as much as treats the water. Whatever. All I care about are results. Over a period of three days, there were fewer "particles coming out of the faucets", and then there were none. We are now on week 2 with no 'rocks' coming out of the faucets at all, and my wife is in love again ... with our tankless. ... show more
Reviewed in the United States on June 7, 2018 by S. Anderson

  • Must have for new system's
Size: 1 Count (Pack of 1) Style: AP430 System
This is cheap insurance for a new system ,especially in hard water area's!
Reviewed in the United States on January 19, 2026 by Dwayne Mahrenholz

  • Good filter
Size: 1 Count (Pack of 1) Style: AP431 Cartridge
A contractor installed a Rheem tankless hot water heater in my house. I love it. When I called a plumber to service/flush it out 3 years after the initial installation, he advised me to get this filter which I did & he installed. Now it seems I can go every 5-6 years between service/flushings. And we have pretty good water in my area of NorCal. ... show more
Reviewed in the United States on November 6, 2025 by H. Cannon

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