Black manganese stains creeping across sinks, tubs, and faucets aren’t just an eyesore—they’re a sign of manganese-rich water silently damaging your home’s surfaces daily. These dark, unsightly stains build up stubbornly, turning your bright, clean fixtures into a constant cleaning chore and risking permanent discoloration that diminishes your property’s appeal. Left untreated, manganese can also impact water quality, affecting your comfort and overall water experience.

The system that fixes it

The Pentair Black Manganese Stains System is engineered precisely to combat this persistent problem at its source. Central to its effectiveness is the Pentair-series air-injection control valve—an advanced head valve that injects air into the system to oxidize manganese before it reaches your taps. This genuine, serviceable Pentair valve ensures reliable operation and long-term maintainability, a crucial feature that generic valves often lack. The system is built on a robust air-injection oxidizing tank, designed to work seamlessly with the innovative Katalox Light manganese-dioxide media. This special media actively oxidizes dissolved manganese in your water, converting it into a solid form that becomes trapped within the media bed and is flushed away during backwash. The result is a comprehensive, low-maintenance treatment process that effectively eradicates black manganese stains from your home’s water supply.

• Advanced Pentair air-injection control valve: Injects air to oxidize manganese efficiently before filtration.
• Durable oxidizing tank design: Built to support optimal oxidation and backwash cycles.
• Katalox Light media: Specialized manganese-dioxide media that transforms dissolved manganese into removable solids.
• Serviceable, genuine Pentair valve: Ensures longevity, easy maintenance, and dependable performance.
• Efficient backwash cycle: Flushes trapped manganese solids, maintaining system cleanliness and effectiveness.

Pick your size

Select the size that fits your household’s bathroom count to ensure optimal manganese removal capacity and smooth water flow without compromise.

What it does for your home

• Eliminates black manganese stains on sinks, tubs, faucets, and appliances for a spotless home.
• Protects plumbing and fixtures from manganese buildup that causes corrosion and discoloration.
• Delivers cleaner, clearer water that enhances your family’s comfort and daily water use.
• Reduces cleaning time and expenses by preventing persistent manganese stain formation.
• Preserves the aesthetic and value of your home’s surfaces and water-using appliances.
• Maintains consistent water quality by trapping and flushing manganese away safely.

Every day, this system safeguards your home from the damaging effects of manganese stains, saving you time, effort, and money.

How the media works

The heart of this solution is the Katalox Light manganese-dioxide media. This specially formulated media acts like a magnet for manganese dissolved in your water. When water passes through, the manganese is chemically oxidized, turning from an invisible dissolved state into tiny solid particles. These solids get trapped in the media bed, preventing them from leaving stains on your surfaces. During scheduled backwash cycles, these solids are flushed out of the system, renewing the media’s effectiveness and keeping your water clear and stain-free. This oxidation and filtration process happens automatically within the tank, ensuring continuous protection without added maintenance hassle.

Why buy this system from us

• Equipped with a genuine, serviceable Pentair air-injection head valve built to last and easy to maintain.
• Free expert sizing tailored to your home’s specific bathroom count and water needs.
• Free shipping within the United States, delivering this solution straight to your doorstep.
• Matched one-brand build ensures all components work flawlessly together for optimal performance.

Common questions

Q? How soon can I expect to see an end to black manganese stains after installation?
A The system begins oxidizing manganese immediately, with stain reduction noticeable within weeks as existing manganese is removed and prevented from redepositing.

Q? Will this system handle high manganese levels effectively?
A Yes, the Katalox Light media combined with the Pentair air-injection valve is designed to treat significant manganese concentrations safely and efficiently.

Q? How often does the system need maintenance or media replacement?
A Regular backwash cycles keep the media clean and effective; media replacement is only needed after extended use, depending on your water's manganese levels.

Shop the Pentair Black Manganese Stains System →

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