Black manganese stains are more than an unsightly nuisance on your sinks, tubs, and toilets—they signal the invisible threat of manganese in your water that can discolor fabrics, corrode fixtures, and leave an expensive trail of damage throughout your home. These dark marks aren’t just stubborn stains; they slowly erode your plumbing, ruin your appliances, and can even affect the taste and odor of your water, creating a daily frustration that chips away at your comfort and property value.

The system that fixes it

The Pentek Black Manganese Stains System is the advanced solution designed specifically to eliminate black manganese stains and protect your home from their damaging effects. At the heart of this system is the Pentek-series air-injection control valve, a precision-engineered head valve that automatically injects air to oxidize manganese in your water, transforming it from a dissolved contaminant into solid particles. These solids are then filtered out and removed during routine backwash cycles, ensuring continuous protection without manual intervention. The system is built around a robust air-injection oxidizing tank, expertly paired with the proven Katalox Light manganese-dioxide media. This specialized media captures and holds the oxidized manganese, making it easy to flush away and keeping your water crystal clear. Opting for a genuine, serviceable Pentek control valve means reliable, long-lasting performance and straightforward maintenance, a crucial factor when dealing with tough manganese stains.

• Air-injection control valve precisely oxidizes manganese to solids
• Durable oxidizing tank housing ensures efficient media use and longevity
• High-performance Katalox Light media converts manganese into filterable particles
• Automatic backwash flushes out trapped manganese, maintaining system effectiveness
• Serviceable brand valve simplifies repairs and extends system lifespan

Pick your size

Choose the size that matches the number of bathrooms in your home to ensure optimal manganese removal capacity and system efficiency, tailored to your household’s water usage.

What it does for your home

• Eliminates black manganese staining on fixtures and plumbing surfaces
• Prevents manganese buildup that damages appliances like dishwashers and water heaters
• Maintains your home’s water clarity and reduces discoloration in laundry
• Protects pipes and faucets from corrosion caused by manganese deposits
• Improves water taste and odor by removing manganese-related impurities
• Reduces ongoing maintenance costs by stopping stain-causing manganese before it settles

With the Pentek Black Manganese Stains System, your home stays cleaner and your water safer, preventing costly repairs and unsightly damage.

How the media works

Katalox Light manganese-dioxide media is a powerhouse of filtration specifically tailored to tackle manganese. It works by oxidizing the dissolved manganese in your water, converting it into a solid form that can be easily trapped inside the media bed. This transformation is crucial because dissolved manganese causes those stubborn black stains that spread through your home. Once converted, the solids are caught by the Katalox Light media and then efficiently flushed out during a backwash cycle, removing the manganese from your water supply entirely. This continuous process means your water stays free of manganese buildup, protecting your home from staining and damage at the source.

Why buy this system from us

• Equipped with genuine, serviceable Pentek-brand hardware for trusted durability
• Free expert sizing consultation for homes across the US to ensure the perfect fit
• Complimentary US-wide shipping included with every order, no surprises
• Matched one-brand design offers seamless compatibility and simplified maintenance

Common questions

Q? How does the Pentek Black Manganese Stains System prevent black stains on my fixtures?
A The system uses the Pentek air-injection control valve to oxidize manganese into solids, which are trapped by the Katalox Light media and flushed out before they can cause staining.

Q? Will this system remove manganese permanently or just reduce the stains?
A It removes manganese effectively by converting it to a solid and filtering it out, preventing the formation of new stains and protecting your plumbing and appliances over time.

Q? Why is the Pentek-series air-injection control valve important?
A This genuine valve ensures precise air injection and backwash timing, providing reliable manganese oxidation and removal while being serviceable for long-lasting performance.

Shop the Pentek Black Manganese Stains System →

Prefer another valve brand? The same fix comes in Fleck, Autotrol, C-Series, Pentek and Pentair.