ScaleRx can prevent up to 76% of limescale accumulation as shown by independent 3rd party testing. These results are further backed up by field testing conducted in hard water areas throughout North America.
ScaleRx®: An Innovative Ion Polarization Scale Inhibitor
ScaleRx® is the answer to your hard water problems.
Unlike a labor-intensive water softening systems, ScaleRx effectively prevents the formation of hard mineral deposits without chemically altering or removing mineral content from water.
Independent testing conducted by IAPMO R&T demonstrates that ScaleRx prevents 76% of scale deposition on heating elements, protecting your home water heater or industrial equipment.
Side-by-side comparison testing reveals ScaleRx is 4 times more effective than the leading electronic scale reduction device.
Save yourself time, money, and the hassle of dealing with scale buildup. Install ScaleRx today.
ScaleRx Scale Inhibitor Features
American Valve’s ScaleRx Ion Polarization Scale Prevention systems are designed to treat water with elevated levels of dissolved calcium carbonate or magnesium carbonate to prevent the formation of calcite crystals, or limescale, on downstream components.
ScaleRx uses a patented Turbulent Galvanic Polarization (TGP) technology to disrupt the formation of calcite crystals. After passing through ScaleRx, calcium carbonate crystalizes as aragonite, which doesn’t stick to plumbing components.”
Explore the ScaleRx Series of Scale Inhibitors
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ScaleRx Comparison Features
Scale RX – Low/Easy
Traditional Water Softening Systems – High/Complex
Scale RX – 4 times more effective than leading electronic devices
Traditional Water Softening Systems – Less effective; varies by system
Scale RX – None
Traditional Water Softening Systems – Yes; chemically removes mineral content
Scale RX – None
Traditional Water Softening Systems – Routine maintenance requirements
Scale RX – Compatible with a broad range of materials
Traditional Water Softening Systems – Compatible, but may have limitations
Scale RX – Ion Polarization Scale Prevention
Traditional Water Softening Systems – Various; often salt based processes
Economic Impact of Scale
Limescale buildup poses a costly challenge for both commercial/industrial facilities and homeowners, leading to clogged pipes, reduced efficiency of heating and cooling systems, and premature equipment failure. This not only inflates maintenance and energy costs but also necessitates expensive repairs or replacements. ScaleRx offers an innovative and proactive approach to mitigate these issues, ensuring system longevity and operational efficiency.
The Cost of Limescale
Percentage of Energy Wasted
Scale Thickness
Increased Running Time
Diverse Industry Applications
ScaleRx is a solution that spans across industries, including:
Scale Inhibitor FAQs
How do I know that ScaleRx works?
Does ScaleRx require an upstream filter?
ScaleRx does not require a filter upstream of installation. In areas where the incoming water contains large amounts of sediment or debris, such as well systems, we recommend using a filter with a minimum of 50 microns to remove large particles upstream of your plumbing system.
My water is extremely hard. Will ScaleRx work in my area?
Yes, ScaleRx is used in the hardest water regions in the US and Canada, including Texas, Southern California, the Great Lakes region and Alberta. ScaleRx is up to 76% effective in all hard water areas.
Will ScaleRx void any warranties on my equipment?
No, ScaleRx will not void any warranties on equipment. It meets the requirements of warranties that stipulate using a scale prevention device.
Will ScaleRx remove existing scale from my piping system?
While ScaleRx is a limescale prevention system and not a descaler, it can remove some pre-existing scale deposits over time.
Is ScaleRx safe for drinking water?
Yes. ScaleRx is certified by IAPMO R&T to NSF/ANSI/CAN 61 & 372, making ScaleRx safe for use in any drinking water system.
Will aragonite reform as limescale (calcite) over time?
Although uncommon in residential or commercial water systems, if treated water is left stagnant for extended periods of time it is possible for aragonite to reform as calcite.
What happens to the water system when aragonite is formed?
Aragonite is a small, powdery crystalline structure of calcium carbonate. It stays suspended in water and does not bond onto pipes or heating elements. Aragonite is eventually flushed out of the system as water is used.
What is aragonite?
Aragonite is a different crystalline structure of calcium carbonate. While chemically the same as calcite, aragonite stays suspended in water and does not bond onto pipes or heating elements.
What is limescale?
Water containing high levels of dissolved calcium or magnesium carbonate leaves calcite deposits commonly known as “limescale” or “scale” on plumbing components. These deposits restrict flow, prevent heat transfer, and cause corrosion.


Why is limescale problematic?
Limescale formation:
- Restricts flow
- Slows transfer of heat
- Decreases efficiency
- Damages heating elements
- Decreases water pressure
- Shortens appliance life span
- Requires frequent and costly maintenance
- Leaves unsightly deposits on clothes and dishes
- Increases energy bills



How do I know if my home, business, or facility is affected by hard water?
Over 85% of America has hard water. Limescale accumulation blocks heat transfer, causes corrosion, and contributes to premature failure of expensive appliances and equipment. ScaleRx effectively inhibits the formation of limescale deposits and is suitable for a wide range of equipment handling moderate to severe hard water.

How does ScaleRx work?
ScaleRx prevents limescale from forming by causing calcium carbonate to form as aragonite instead of calcite (limescale), it does not chemically alter the water and does not use salt or other chemicals. ScaleRx requires no maintenance, filters or power sources and lasts up to 12 years.

What are the benefits of ScaleRx?
ScaleRx can be installed on any tank or tankless water heater and connects directly to any ¾” Male NPT Copper, PEX, PVC or CPVC pipe. Testing conducted by IAPMO R&T shows ScaleRx to be 76% effective at preventing limescale deposits on copper heating elements. In side-by-side comparison testing it was 4 times more effective than the leading electronic scale reduction device.
ScaleRx:
- Prevents up to 76% of limescale buildup in equipment and water systems
- Extends the life and efficiency of equipment
- Is certified by IAPMO R&T to drinking water standards NSF/ANSI/CAN 61 & 372
- Requires no filters, power source, or maintenance
- Acts as a limescale-caused corrosion inhibitor
Why is ScaleRx a better water softener alternative?
Traditional water softeners are labor-intensive and time consuming. They require salt, resin beads, circulating water, backflushing, and cleaning in order to chemically alter water. On the other hand, ScaleRx prevents the formation of limescale crystals without water treatment chemicals, filters, or labor. For facilities managers and homeowners alike, the return on investment with ScaleRx as compared to a traditional water softening system is night and day. ScaleRx is truly a “set it and forget it” solution to prevent mineral scale deposits.
For what industries is ScaleRx most beneficial?
Where do I install ScaleRx in my home?
ScaleRx can be installed either directly onto your water heater or other appliance, or on the main water line upstream of your appliances.
How long does ScaleRx last?
ScaleRx contains no filters and is maintenance-free. The body is made of 304 stainless steel, and testing has shown that ScaleRx remains effective after 12 years of constant use with a residential water heater.
Can I install ScaleRx outside?
Certainly! The outside components are made of durable stainless steel and made to survive harsh environments. ScaleRx Whole Home comes with optional SharkBite™ fittings which are not rated for outdoor use. ScaleRx can also be buried, although it is not the recommended installation method.
What type of pipe do I need to use?
ScaleRx is compatible with hard copper (types L, K and M), PEX, HDPE, PE-RT, CPVC, or and PVC pipe. Brass or plastic adapters may be connected directly to ScaleRx.
Why doesn’t ScaleRx need an external power source?
ScaleRx contains patented TGP® turbines that create both turbulence and a small galvanic current. These features combine to prevent the formation of calcite crystals. Scale inhibition with ScaleRx keeps your water heater and other equipment free from scale build up.
Does ScaleRx cause any flow restrictions or pressure drop?
ScaleRx ¾” has a maximum flow rate of 14.1 GPM, while 1” units flow up to 17.6 GPM and have a maximum pressure drop of less than 1 PSI.
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