When dealing with fluids that contain variable particle sizes and high sediment loads, surface filtration media can clog quickly. PP String Wound Filter Cartridges utilize true depth filtration to hold high volumes of contaminants without suffering rapid pressure drops.
How Depth Filtration Works
String-wound cartridges are manufactured by precision-winding yarn around a central core matrix. The winding pattern forms diamond-shaped openings that grow progressively tighter toward the inner core.
-
Outer Layers: Traps larger suspended particles and sediment.
-
Inner Layers: Captures finer contaminants down to the specified micron rating.
Main Benefits for Industrial Operations
-
High Dirt-Holding Capacity: Multi-layer gradient density allows longer run cycles between cartridge changes.
-
Broad Chemical Compatibility: Polypropylene construction resists acids, solvents, and industrial chemicals.
-
Low Pressure Drop: Maximizes throughput velocity while keeping operational pumping costs low.
Common Industrial Applications
-
Pre-filtration for Reverse Osmosis (RO) systems
-
Municipal and well water sediment removal
-
Processing solvents, inks, coatings, and organic chemicals
-
Edible oils and beverage clarification
Choosing the correct core material (Polypropylene vs. Stainless Steel) and fiber density ensures peak performance across hot or chemically volatile applications.