The HUM Chemical Free Iron/Sulphur/Manganese FOK Filter 1.0 Cubic Foot is a fully automatic whole-home filtration system designed to help reduce iron, hydrogen sulphide odors, and manganese without the use of harsh chemicals.
Using an advanced air injection oxidation process combined with a premium Made-in-USA Clack control valve, this system provides an efficient, low-maintenance solution for treating problem well water while remaining septic-system friendly.
Ideal for homeowners looking to reduce iron staining, rotten egg odors, and manganese buildup with lower ongoing maintenance costs.
Key Features
• Chemical-free filtration system
• Helps reduce iron, hydrogen sulphide, and manganese
• Air injection oxidation technology
• Premium Made-in-USA Clack control valve
• Fully automatic backwashing operation
• Septic-system friendly design
• PowerCell backup retains settings during outages
• Ships pre-programmed and ready to install
• Compatible with constant pressure and jet pump systems
Chemical-Free Air Injection Filtration
The integrated air injection system oxidizes contaminants naturally without requiring chlorine, potassium permanganate, or other chemicals. This provides a more environmentally friendly and lower-maintenance approach to well water treatment.
Helps Reduce Common Well Water Problems
This system is designed to help reduce:
• Iron staining
• Rotten egg odor caused by hydrogen sulphide
• Manganese buildup and staining
Performance Capabilities
• Removes up to 4.5 ppm hydrogen sulphide
• Removes up to 10 mg/L manganese when pH is between 8.3 and 9.0
• Operates within a pH range of 6.0 to 9.0 for iron and sulphur reduction
Note: Not recommended for water with iron levels above 4 ppm.
Reliable Clack Control Valve
The system uses a premium Clack water treatment valve known for reliability, serviceability, and long-term performance.
Valve Features Include
• Electronically controlled operation
• Fully automatic regeneration cycles
• PowerCell backup for settings retention during outages
• Tool-free valve disassembly in under 5 minutes
• No nuts, bolts, screws, or springs for simplified servicing
Installation & Compatibility
• Ships fully programmed and ready to install
• Fully compatible with constant pressure systems and jet pumps
• Includes bypass valve
Important Installation Note
• Requires minimum 6.5 GPM backwash flow rate
• Recommended drain line size: 3/4"
Specifications
• Product Number: WD CFOK10
• Model: WDFOK-1
• Media Volume: 1.0 Cubic Foot
• System Type: Whole House Chemical-Free Iron Filter
• Application: Iron, sulphur, and manganese reduction
• Dimensions: 63" H × 10" Diameter
• Valve Type: Clack electronic control valve
