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Crusader SHIELD - Scale Control


Prevents corrosion of metallic pipes, appliances, and fixtures with a protective nanolayer

Reduces existing scale formation without using acid or dangerous chemicals

Increases heating efficiency and reduces maintenance

Inhibits the ability of Carbonate scale to form in your plumbing system and appliances

Bonds with Hard Water minerals like Calcium and Magnesium Carbonates

Bonds with inorganic metals in the water like Iron, Copper, and Zinc

SHIELD Scale Control Systems use Active Armour Technology to Address the following water quality concerns at higher flow rates than traditional Active Armour Cartridges:

  • Hard Water Scale

  • Acidic Water

  • Iron

  • Silica and Silicates

  • Manganese

  • TDS Corrosion

How does Active Armour work?

The phosphates in Active Armour systems adapt easily to pre-existing water qualities without negatively affecting the water chemistry.
Crusader Orthophosphate-based systems are corrosion inhibitors and as such react with dissolved metals (e.g. Ca, Mg. Zn, etc.) in the water to form a very thin metal-phosphate coating with pipes and fitting surfaces. This forms a microscopic barrier on the inner surface of the pipe that is exposed to the treated water.

Crusader Polyphosphate based systems react with soluble metals (iron, manganese, calcium, magnesium, etc.) by sequestering (binding-up) the metals to maintain their solubility in water. The phosphate sequestering process minimizes the risk of discoloration, staining, scaling, taste/odor, and other water quality complaints.

Does this do the job of a Water Softener?

No, Active Armour is not a Water Softening technology; it is designed to control scale and corrosion only. Water softeners physically remove hardness from the water, which allows other major benefits to skin, soap, dishes, and laundry.

Product Specifications Table

Crusader SHIELD Scale Control





Peak Flow Rate (GPM)





Service Flow Rate (GPM)





Dosage Rate (mg/c)

1.0 - 2.0

1.0 - 2.0

1.0 - 2.0

1.0 - 2.0

Projected Lifespan (Gallons)





Interested in Financing? Here's How It Works!

We’re now offering fast and simple financing to customers on purchases between $500 and $25,000* through Wisetack.
With Wisetack, you can select the loan option that best fits your budget and pay in easy monthly installments rather than all at once upfront.

Fast and easy:

The application takes about a minute to complete.

No Hidden Fees:

There are no penalties, fees, or compounding interest.

No Credit Impact:

Checking your eligibility will not impact your credit score.

Ready to protect your investments from hard water scale? Click here to get started!