Crusader SHIELD - Scale Control
Benefits:
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:
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Hard Water Scale
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Acidic Water
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Iron
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Silica and Silicates
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Manganese
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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.

Product Specifications Table
Crusader SHIELD Scale Control | CT-AA-225 | CT-AAP-225 | CT-AA-300 | CT-AAP-300 |
Peak Flow Rate (GPM) | 25 | 25 | 30 | 30 |
Service Flow Rate (GPM) | 20 | 18 | 25 | 25 |
Dosage Rate (mg/c) | 1.0 - 2.0 | 1.0 - 2.0 | 1.0 - 2.0 | 1.0 - 2.0 |
Projected Lifespan (Gallons) | 120,000 | 120,000 | 250,000 | 250,000 |