Home About HongtekFiltration ProductsApplicationsSupportNewsContact Us
Home >> Filtration Products >> Liquid Filtration >> String Wound Cartridges >> BSW Series Big Blue String Wound Cartridge Filters
BSW Series Big Blue String Wound Cartridge FiltersBSW Series Big Blue String Wound Cartridge FiltersBSW Series Big Blue String Wound Cartridge Filters

BSW Series Big Blue String Wound Cartridge Filters


BSW Series Big Blue String Wound Cartridge Filters are manufactured with multi-layer wound yarn construction. Big blue string wound cartridges, with the central corn such as PP, SUS304, SUS316 and kinds of FDA approved materials, providing high capacity for resisting pressure, high flow rate, low pressure drop and outstanding dirt holding capacity. Big blue wound cartridges’ materials include PP, Bleached Cotton and Glass Fiber etc., providing longer service life and stronger capability in temperature resisting, acid resisting and alkali resisting, so are widely used in application of liquid filtration and oil-water separation systems.

Filter MediaPP, Bleached Cotton, Glass Fiber
Length5", 9.8", 10", 20", 30", 40" According to customers requirements
Inside Diameter28mm, 30mm (Special ID can be customized)
Outside Diameter110mm, 4.5"(115mm) Special OD is accepted
Filtration Rating1μm, 5μm, 10μm, 20μm, 30μm, 50μm, 75μm, 100μm
CorePP, SUS304, SUS316
Gasket/O-ringSilicone, EPDM, Viton, Buna


● Big blue wound cartridges are washable, recyclable and non-pollution

● FDA approved wound yarn materials with PP, SUS304 or SUS316 central corn

● Wide application and good chemical compatibility for different applications

● Large surface area enhances higher filtration efficiency and longer service life

● Big blue string wound cartridges have excellent resistance to acids, alkalis,corrosion etc.

● Consistent performance of high dirt holding capacity, accompanied by low pressure drop and high flow rate

ChemicalsFood & BeveragePlating Solutions
Pre-RO filtrationOil water separationPharmaceuticals
Petrochemical ProcessElectronics and SemiconductorIndustrial waste water treatment


Operation Data for Big Blue String Wound Cartridge Filters

MaterialPolypropylene(PP)Bleached CottonGlass Fiber
Maximum Operating Temperature60℃(140℉)150℃(300℉)400℃(750℉)
Max. Differential Pressure2.7 bar at 27℃(50 psi at 80℉)
Recommend Change out Differential Pressure1 bar (14.5 psi)

Tech Support
Construction of Big Blue String Wound Cartridge Filters

● The picture is the section of big blue wound cartridges

● High dirt holding capacity, high flow rate and long service time

● From outer layers to inner layers condensate wound filters are loose to tight

● Honeycomb construction without using adhesives and no fine fibre drop out

● Multilayered structure and depth filtration pattern ensure good filtration efficiency

● High quality big blue wound filters for compatibility with wide range of process fluids

Production of Big Blue String Wound Cartridge Filters


● Wound Yarn Materials: All wound yarns are made of high quality FDA approved materials

● Wound Filters Workshop: One of largest workshop of big blue wound cartridges in China, high out put & fast delviery time

● Wound Cartridges Warehouse: Scientific storage and warehouse of big blue wound filters to the benefit of good delivery efficiency

● Container Shipment: Big blue string wound filters are convenient to be loaded into containers, safety & timely transport for the shipment

Order Information
BSWFilter MediaLengthIDODMicron RatingCore Material

BSW Series 

Big Blue String Wound Cartridge Filters

PP = PP5 = 5"(127mm)A = 28mmC = 110mm1 = 1μmP = PP
9.8 = 9.8"(248.9mm)5 = 5μm
10 = 10"(254mm)10 = 10μm
BC = Bleached Cotton20 = 20μmS4 = SUS304
20 = 20"(508mm)B = 30mmM = 4.5" (115mm)30 = 30μm
50 =  50μm
GF = Glass Fiber 30 = 30"(762mm)75 = 75μmS6 = SUS316
40 = 40"(1016mm)100 = 100μm

For Example:


BSW Series Big Blue String Wound Cartridge Filters - Bleached Cotton - 10" - 30mm - 115mm - SUS304

Special Big Blue String Wound Cartridge Filters can be customized, such as special ID, OD, length and end caps etc.