BigBlue PP String Wound Filter Cartridge
Polypropylene string wound · Depth filtration · 4.5" diameter · 10" / 20" BigBlue
Large-diameter sediment filter cartridge for BigBlue housings, made by tightly winding polypropylene yarn in a defined pattern onto a polypropylene support core. It physically retains rust, sand, sediment and silt.
- Nominal rating
- 5 µm (standard)
- Outer diameter
- 4,5" · 115 mm
- Operating temperature
- 4 - 45 °C
- Replacement interval
- 3 - 6 months
Stock codes6-01-10-BB6-01-20-BB
Overview
The 4.5" diameter provides far more filter volume and dirt-holding capacity than standard cartridges. It is used at high-flow building inlets and on well water lines with less frequent replacement.
Features
- High filter volume and dirt-holding capacity with 4.5" diameter
- Depth filtration with graded winding
- Low pressure drop at high flow
- Polypropylene yarn and core; chemically resistant
- Fits BigBlue 10" and 20" housings
- Less frequent replacement than standard cartridges
Applications
- Mains water filtration at building, complex and plant inlets
- Pre-filtration of well and tank water
- Protection ahead of high-flow treatment systems
- Industrial process and cooling water lines
- Irrigation and livestock water lines
Models and Stock Codes
| Stock Code | Model | Nominal Length | Max. Flow* (l/h) | A (mm) | B (mm) | C (mm) |
|---|---|---|---|---|---|---|
| 6-01-10-BB | 10" BigBlue String Wound Filter | 10" | 5000 | 250 | 115 | 28 |
| 6-01-20-BB | 20" BigBlue String Wound Filter | 20" | 10000 | 508 | 115 | 28 |
Connection: double open end (DOE). For use with BigBlue (4.5") housings.
* Typical value for a 5 µm cartridge and 20 °C water; flow decreases with finer ratings and dirty water.
Technical Specifications
Operating Conditions
- Operating temperature
- 4 - 45 °C (39 - 113 °F)
- Application
- Sediment filtration
- Compatible housing
- BigBlue 10" / 20"
- Recommended change-out Δp
- 1 bar (15 psi)
- Replacement interval
- 3 - 6 months (water quality dependent)
Materials and Construction
- Filter media
- Polypropylene (PP) yarn
- Core
- Polypropylene (PP)
- End configuration
- Double open end (DOE), no gasket
- Use
- Disposable, not washable
Installation and Replacement
- Shut off the water supply and relieve the pressure in the housing.
- Open the BigBlue housing with the wrench, remove the used cartridge and clean the inside of the housing.
- Centre the new cartridge in the housing, check the O-ring and close the housing.
- Slowly reopen the water supply and check for leaks.
- On first use, flush the line for a few minutes.
String wound cartridges are disposable and must not be washed and reused. Replace the cartridge when the inlet-outlet pressure difference reaches 1 bar, or every 6 months at the latest. Slight foaming may occur on the first flow through a new cartridge; this is normal.
Packaging
| Stock Code | Box Size (mm) | Pcs / Box | Box Weight |
|---|---|---|---|
| 6-01-10-BB | 585 × 250 × 530 | 20 | - |
| 6-01-20-BB | 585 × 245 × 530 | 10 | 9 kg |
Please contact our sales team for the box weight of the 10" model.
Wholesale and OEM
Request a quote and lead time for this product
We quote distributors, installers and project contractors by stock code. Ask us about OEM and private label production as well.



