String Sediment Filter

String Wound Sediment Filter

String wound sediment filter cartridges are structured with loose outer layers and tight inner layers which can offer true depth filtration for high dirt holding capacity and extremely low media migration to ensure temperature and chemical compatibility. The main advantage of the string wound filter is its exceptionally high structural strength; therefore, they can with stand severe operating conditions.

Features 

• Fits all the standard housings
• Low-pressure drop, high dirt holding capacity, and long service life
• Loose outer layers and tight inner layers offer effective depth filtration
• Various filter media fit with various applications

Applications Of The String Wound Sediment Filter

• Food & Beverage
• Semiconductor
• Pharmaceuticals
• Electric Plating
• DI & RO pretreatment

Specifications Of The String Wound Filter

• Filter media: Polypropylene, Fibrillated Polypropylene, Cotton, Glass Fibre
• Outside diameter: 55mm, 61mm, 63mm, 65mm, 115mm
• Inner diameter:28mm, 30mm
• Length: 10″, 20″, 30″, 40″
• Micron Rating(micron): 5,10,20,30,50,75,100
• Polypropylene material for non-organic solvent, maximum recommended Operating temperature<70degreesC
• Bleached cotton material filter cartridge with stainless core applies to organic solvent, water, oil, alkalinity solvent, beverage, pharmaceuticals, maximum Recommended operating temperature: 120 degree C.

The latest development in string-wound cartridges has overcome problems with roving and friction-spun yarns and has all the features of melt-blown cartridges. The media of the new string-wound cartridge is made from the continuous filaments-each individual filament that continues throughout the entire length. There are no short fibers, making the cartridge free from any media migration. These continuous filaments are melt-spun in a way that no chemicals like spin-finish, wetting, and antistatic agents, surfactants, emulsifiers, etc., are required. These chemical-free continuous filaments are then randomly oriented to each other, intermixed, looped, and entwined forming a non-round, highly stable, bulky yarn.

Random short loops protrude from the surface of the yarn. As the filter is wound, every single yarn traps part of the loops of the adjacent yarn giving a highly stable structure. The yarns get locked in place and will not roll or move aside. This stable structure also gives excellent sealing. It easily passes the paper clip test. Yarn that doesn’t shift easily also makes the filter resistant to particle unloading. With advancements in winding technology (computer controls) and pitch, the number of crossings and space between each yarn can be continuously varied and controlled from start to finish of the cartridge winding.

The inner layers of yarn can be wound closer together and the distance between the yarns can be gradually increased toward the outer layers. This achieves density grading without changing the winding tensions for more consistent performance in string-wound cartridges. Coarser particles are trapped in the outer layers and finer particles in the inner layers. In this cartridge, the liquid flows through the entire yarn structure-there are no typical diamond-shaped holes.