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FPP Series PP Spun Filter Cartridges with Cavity SurfaceFPP Series PP Spun Filter Cartridges with Cavity SurfaceFPP Series PP Spun Filter Cartridges with Cavity Surface

FPP Series PP Spun Filter Cartridges with Cavity Surface


FPP Series PP Spun Filter Cartridges with Cavity Surface are designed to satisfy the market requirement for high-grade polypropylene spun filter cartridges with exceptional dirt holding capability and good performance. Beside the normal advantage of pp spun filters, the cavity surface structure of pp spun cartridges provids longer service life, higher efficiency and lower pressure drop. The surface pores structure of spun filters spreads water flow to reduce pressure drop, increases the capacity of particle filtration, thus having more value for industrial fluid processing.

Filter MediaPolypropylene
Filter SurfaceCavity treatment
Length5", 9.75", 9.8", 10", 20", 30", 40", 50"
Inside Diameter28mm, 30mm
Outside Diameter2.5"(63mm), 2.55"(65mm)
Filtration Rating1μm, 3μm, 5μm, 10μm, 25μm, 50μm, 75μm, 100μm
Gasket/O-ringSilicone, EPDM, Viton, Buna
End CapDOE, 222/Flat(SOE), 222/Fin(SOE), 226/Flat(SOE), 226/Fin(SOE)


● Made of FDA grade PP material, no binders, additives and lubricants

● PP spun cartridges have absolute filtration rating from 1 to 100 micron

● High strength & pressure resistance, stable structure and no fiber released

● Surface pore structure lead to lower pressure drop and higher filtering efficiency

● Special process and types of adapters could be connected, easy to installed in standard housings

● 100% PP spun filters have broad chemical compatibility, widely used for many industrial fluid processing

Paint industry Food & BeveragesChemical industry
Water processingElectronic industryIndustrial water treatment
Petrochemical industryCooling water systemPre-filter of RO water filtration
De-salination plantsOil water separationMedium& low viscosity fluids


Operation Data for PP Spun Filter Cartridges

Maximum Operating Temperature80 ℃
Max. Differential Pressure1.2kg/cm² at 80 ℃
2.1kg/cm² at 60 ℃ 
4.2kg/cm² at 20 ℃
Liquid Flow DirectionOutside to inside
Recommend Change out Differential Pressure2.1 kg/cm²

Tech Support
Working Principle of FPP Series PP Spun Filter Cartridges

● The drawing is the working principle of layers structure depth pp spun filter cartridges

● Small particles pass the outer layers, then filtered by inner layers wich made of fine fiber and high precision

● Large particles are hold in cavity surface layers of pp spun filter cartridges which have been made surface treatment

● Cavity surface and multilayer keep pp spun cartridges high flow rate, better filtration efficiency and longer service life

Installation of PP Spun Bonded Filter CartridgesInstallation_PP_Spun_Filters.jpg

● Hongtek brand depth pp spun filter cartridges used for pre RO water filtration

● The central of pp spun cartridges are still no polluted, so that keep liquid clear after filtration

● After used pp spun filters compare with before used can apparent know the good efficiency filtration

● No fiber drop out, high dirt holding, low pressure drop, high flow rate and high pressure resisting capability

● High quality and reasonable price pp spun filter cartridges increase of longer service life and save much cost

Order Information
FPPIDODMicron RatingLengthEnd CapGasket/O-ring

FPP Series 

PP Spun Filter Cartridges

with Cavity Surface

A = 28mmM = 63mm1 = 1μm5 = 5"D = DOES = Silicone
3 = 3μm9.75 = 9.75"
5 = 5μm9.8 = 9.8"T = 222/Flat(SOE)E = EPDM
10 = 10μm10 = 10"
B = 30mmF = 65mm25 = 25μm20 = 20"O = 222/Fin(SOE)V = Viton
50 =  50μm30 = 30"
75 = 75μm40 = 40"P = 226/Flat(SOE)U = Buna
100 = 100μm50 = 50"L = 226/Fin(SOE)

For Example:


FPP Series PP Spun Filter Cartridges -28mm - 63mm - 10μm - 20" - DOE

Special PP Spun Filter Cartridges can be customized, such as special ID, OD, end caps etc.