
The 1 Micron 4.5'' OD Poly Spun Big Blue Sediment Filter is a high-capacity depth filtration solution designed for residential, commercial, and industrial water filtration systems. Constructed from 100% pure polypropylene using spun-bonded technology, it features a 4.5-inch outer diameter for enhanced surface area and improved filtration efficiency.
With a nominal rating of 1 micron, this filter excels at removing fine sediment, rust, dirt, and other suspended particles. Its gradient pore structure allows for effective surface and deep filtration, ensuring low pressure drop, long service life, and protection for downstream equipment such as RO membranes and UV sterilizers.
Filter Type: Spun-Bonded Depth Filter
Material: 100% Polypropylene (PP)
Outer Diameter: 4.5 inches (Big Blue Standard)
Micron Rating: 1 µm nominal
Length Options: 10", 20", 30", 40"
Application: Water filtration systems in homes, industry, and commercial setups
✅ Increased Filtration Precision
Fine 1-micron rating provides excellent removal of sediment, silt, and rust.
✅ High Dirt-Holding Capacity
Thick filter media and large surface area enable longer service life.
✅ Efficient Surface & Deep Filtration
Multi-layer gradient structure captures both large and fine particles.
✅ Low Pressure Drop
Maintains steady water flow even in high-load filtration conditions.
✅ Durable Big Blue Design
4.5'' OD ensures compatibility with Big Blue filter housings and heavy-duty systems.
✅ Wide Application Scope
Effective in domestic drinking water, industrial pure water, and pre-treatment processes.
Parameter | Details |
Product Name | Big Blue Spun-Bonded Sediment Filter |
Filter Media | Melt-Blown Polypropylene (PP) |
Micron Rating | 1 µm (nominal) |
Outer Diameter | 4.5 inches (115 mm) |
Inner Diameter | 1.1 inches (30 mm) |
Length Options | 10", 20", 30", 40" |
Recommended Flow Rate | 1–4 m³/h (depending on length) |
Maximum Operating Temp. | 80°C (176°F) |
Maximum Differential Pressure | 3.0 bar (43.5 psi) |
Replacement Interval | 6–12 months or when pressure drop occurs |
✅ Drinking Water Filtration
Removes sediment and particles to improve water clarity and safety.
✅ Residential & Commercial RO Systems
Ideal as a pre-filter to protect reverse osmosis membranes from fouling.
✅ Industrial Pure Water Systems
Used in food processing, electronics, and pharmaceuticals for particle removal.
✅ Wastewater Treatment Pre-Filtration
Captures suspended solids before advanced treatment stages.
✅ General Water Treatment Units
Compatible with most Big Blue filter housings for municipal or well water.
✔ Enhanced thickness and surface area for longer operation
✔ Precision filtration at 1 micron level
✔ Compatible with standard Big Blue housings (10''–40'')
✔ Food-grade polypropylene materials
✔ Suitable for OEM & private label
Micron Ratings: 1, 5, 10, 25, 50, 100 µm
Lengths: 10", 20", 30", 40"
OD Sizes: Standard (2.5”) and Big Blue (4.5”)
End Cap Options: DOE, 222/Flat, 226/Fin (on request)
Our technical team is ready to assist you in selecting the most effective sediment filters for your water filtration system. We support bulk orders, custom branding, and global shipping.
If you need standard-size PP sediment filters with 2.5'' OD, check out our Standard PP Melt Blown Filter Cartridge – Depth Sediment Filter.