String Wound Sediment Filter

Products Description Our string wound sediment filters achieve deep gradient filtration by precision winding PP cotton, glass fiber and other special yarns onto polypropylene (PP) or stainless steel porous skeleton, forming a three-dimensional honeycomb structure that is tightened from the...

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Products Description

Our string wound sediment filters achieve deep gradient filtration by precision winding PP cotton, glass fiber and other special yarns onto polypropylene (PP) or stainless steel porous skeleton, forming a three-dimensional honeycomb structure that is tightened from the outside to the inside.

The string wound sediment filter is the optimal solution when your working conditions meet any of the following:

High impurity water quality (turbidity>50NTU)
Strong acid/alkali/organic solvent filtration
Budget-sensitive pre-filtering scenarios
High-frequency backwashing scenarios

string-wound-sediment-filter-skeleton

Technology Breakthrough Design

Three-layer Progressive Filtration Structure:

Layers	Functional Description	Micron Rating
Outer Layer	Loosely wound, intercepts large particles of contaminants	50-20μm
Middle Layer	Density Transition, captures medium suspensions	20-5μm
Inner Layer	Tightly constructed, blocks fine sediments	5-0.5μm

Precise Matching Model Parameter Table:

Product Code

Length

Media

Core

Micron

Core Cover

Diameter

End Cap Configuration

4.7=4 3/4"

5=4 7/8"

9.7=9 3/4"

9.8=9 7/8"

10=10"

19.5=19.5"

20= 20"

29.4 =29.25"

30=30"

40=40"

B = Fribilated Polypropylene
C = FDA Bleached Cotton
E = Polyester
F = FDA Polypropylene
G = Glass Fiber
N = Nylon
P = Industrial Polypropylene
R = Rayon
U = Natural Cotton
W =Industrial Bleached Cotton

P = Polypropylene
S = 304 Stainless Steel
G = 316 Stainless Steel
T = Tin Steel

0.5
1
3
5
10
20
25
30
50
75
100
150

Blank = None
N = Non
Woven
W = Woven

Blank =2.5"
4.5 = 4.5"+
2 = 2"
3 = 2 3/8"
4 =2 3/4"

Blank = None
S1 = DOE w/Gasket
S3 = 222 w/Fin End
S4 = 222 w/ Flat End
S5 = 226 w/Fin End
S6 = 226 w/Flat End
S8 = SOE w/Spring
S12 = 222 w/ spring
F = Fin End Only
FL = Flat End Only
EXP = PP Extended Core
EXS = SS Extended Core

features

Filter material layered design (outer 50μm → inner 0.5μm), progressive interception of particles, dirt holding capacity is 3 times that of ordinary cartridges, life extension of 2-3 times.
Porosity as high as 85%-90%, pressure drop reduced by 30%-50%, suitable for large flow scenarios.
Acid and alkali corrosion resistance, suitable for chemical industry, metallurgy and other highly corrosive scenes.
Stainless steel/PP double skeleton option, deformation resistance increased by 200%, withstand 0.3MPa high pressure.

workshop

FAQ

Q: How to choose PP cotton vs fiberglass cartridge?

A: PP cotton: the king of cost-effective! Suitable for 80% room temperature water quality (<60° C), wide range of precision (0.5-50μm). Glass fiber: preferred for high temperature/strong corrosion scenarios (e.g. boiler water intake, acid wash filtration).

Q: Does the filter cartridge have to be replaced if it turns black?

A: On the contrary! Surface deposition means that the cartridge is working effectively and only needs to be replaced if the differential pressure increases by >0.3 MPa.

Q: Do you offer custom sizes or specifications?

A: Yes, we specialize in custom filtration solutions. Contact us with your requirements (size, flow, pressure, micron rating, materials, certifications).

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