20″ Hydro-Cure Big Blue Dual Gradient 25/01 Micron Sediment Filter

Description

The 20" Hydro-Cure® Big Blue Dual Gradient 25/01 Micron Sediment Filter is a high-capacity depth filter designed to remove sediment, dirt, sand, rust, silt, and other suspended particles from residential, commercial, and well water systems. Its dual gradient construction features a 25-micron outer layer that captures larger particles and a 1-micron inner core that traps finer sediment, providing longer filter life, higher dirt-holding capacity, and excellent water flow.

Ideal for use as a pre-filter for water softeners, UV systems, reverse osmosis systems, and whole-house filtration, this cartridge helps protect downstream equipment while improving overall water quality.

Key Features

• Dual Gradient Filtration: 25-micron outer layer captures larger particles while the 1-micron inner core removes finer sediment.
• Extended Filter Life: Layered construction distributes contaminants throughout the filter, increasing dirt-holding capacity compared to single-density cartridges.
• High Flow Performance: Designed to deliver high flow rates with minimal pressure drop.
• 100% Melt-Blown Polypropylene: Manufactured without binders, adhesives, or chemical additives.
• Chemical & Bacterial Resistant: Polypropylene media resists chemical attack and will not support bacterial growth.
• NSF/ANSI 42 Certified Materials: Certified for material safety in potable water applications.
• Made in the USA: Manufactured using precision melt-blown technology for consistent performance.

Compatibility

The 20" Hydro-Cure® Big Blue Dual Gradient 25/01 Micron Filter is compatible with:

• Standard 4.5" x 20" Big Blue® filter housings
• Standard 20" Big Clear filter housings
• Whole-house filtration systems
• Well water systems
• Municipal water filtration systems
• Pre-filtration for:
  • UV disinfection systems
  • Water softeners
  • Iron filters
  • Reverse osmosis systems

📌 Fits most industry-standard 4.5" x 20" Big Blue-style filter housings.

Specifications

Product Type – Dual Gradient Sediment Filter

Filter Size – 4.5" x 20" Big Blue

Micron Rating – 25/1 Micron Nominal

Filter Media – 100% Melt-Blown Polypropylene

Construction – Dual Gradient Density

Maximum Temperature – 125°F (52°C)

Certification – NSF/ANSI 42 (Material Requirements)

Application – Sediment Reduction

Recommended flow rate is approximately 10 GPM for a 20" cartridge to achieve optimal filtration performance.

Applications

The 20" Hydro-Cure® Big Blue Dual Gradient Filter is ideal for:

• Whole-home water filtration
• Well water sediment removal
• Municipal water pre-filtration
• Protecting UV disinfection systems
• Protecting water softeners and control valves
• Reverse osmosis pre-filtration
• Residential, commercial, and light industrial water treatment

It effectively reduces:

• Sand
• Dirt
• Rust
• Silt
• Scale particles
• Other suspended sediment

Note: This sediment filter is designed for particulate removal only and does not remove bacteria, viruses, or cysts.

Maintenance

For best performance:

• Replace the filter every 3–6 months, or sooner if water pressure decreases or sediment loading is heavy.
• Replace more frequently on private well systems with high sediment levels.
• Inspect the filter during routine system maintenance.
• Sanitize the housing when installing a new cartridge.
• Lubricate the housing O-ring with food-grade silicone lubricant during filter changes.

💡 The dual gradient design allows the outer layer to capture larger debris first, extending the life of the finer 1-micron core and maintaining better flow throughout the filter's service life.