Home About HongtekFiltration ProductsApplicationsSupportNewsContact Us
Home >> Filtration Products >> Liquid Filtration >> Melt Blown Filter Cartridges >> NPP Series Nominal PP Melt Blown Filter Cartridges
NPP Series Nominal PP Melt Blown Filter CartridgesNPP Series Nominal PP Melt Blown Filter CartridgesNPP Series Nominal PP Melt Blown Filter Cartridges

NPP Series Nominal PP Melt Blown Filter Cartridges


NPP Series Nominal PP Melt Blown Filter Cartridges are made of 100% FDA approved polypropylene material, without binders, additives and lubricants. PP melt blown filter elements are manufactured to suit different pore diameter of nozzle-spraying melt blown machines. PP melt blown filters have multi-layered constructions with fine fibers in inner layers while in outer layers fibers are coarse, which lead to progressive contaminant removal efficiency and consistency of good performance.

PP melt blown filter cartridges own high dirt holding capacity, low pressure drop, high flow rate, good chemical resistance, long service life and effective filtration for suspended particle, sediment and other kinds of impurities, also, there is no fibre released. PP melt blown cartridges are economical and classical filter media, which are widely used in liquid prefiltration industries.

Filter MediaPolypropylene
Length5", 9.75", 9.8", 10", 20", 30", 40", 50", 60", 70" (According to customers requirements)
Inside Diameter28mm, 30mm (Special ID is accepted)
Outside Diameter2.36"(60mm), 2.4"(61mm), 2.5"(63mm), 2.55"(65mm)  (Special OD is accepted)
Filtration Rating1μm, 5μm, 10μm, 20μm, 30μm, 50μm, 75μm, 100μm
Gasket/O-ringSilicone, EPDM, Viton, Buna
End CapDOE, 222/Flat(SOE), 222/Fin(SOE), 226/Flat(SOE), 226/Fin(SOE)


● PP filter cartridges are mainly applied to most industry standard housings

● 100% FDA approved safety polypropylene materials suit a lot of demanding applications

● Superior PP melt blown filters have high filtration efficiency and consistent good performance

● PP cartridges have multi-layered construction, high contaminant holding capacity and long service life

● Many types of end caps are available by thermally-bonded, such as 222/fin, 222/flat, 226/fin, 226/flat etc.

● Customized special PP melt blown filter cartridges are accepted to meet specific application's requirements

Food & BeveragePlating solutionPCB industry
Chemicals and SolventsPre RO/ID water filtrationPharmaceuticals
Petrochemical ProcessIndustrial waste water treatmentElectronic Industry


Operation Data for PP Melt Blown Filter Cartridges

Maximum Operating Temperature60 ℃(140℉)
Max. Differential Pressure3.0 bar at 27℃ (43 psi at 80℉)
2.0 bar at 60℃(29 psi at 140℉)
1.0 bar at 60℃(14 psi at 140℉)
Liquid Flow DirectionOutside to inside
Recommend Change out Differential Pressure2.5 Bar

Pressure Drop Rate of 10" PP Melt Blown Filters


Tech Support
Construction of PP Melt Blown Filter Cartridges

● The cross-section drawn of PP melt blown filter cartridges

● From inner layers to outer layers of PP filters the fiber is fine to coarse

● Multilayered structure and depth filtration pattern ensure good filtration efficiency

● Formed by thermal bond without using of any binders, adhesives and and lubricants

● 100% FDA approved polypropylene for compatibility with wide range of process fluids

Working Principle of PP Melt Blown Cartridges


● The drawing is the working principle of layers structure depth pp melt blown filter cartridge

● Layers filtration keep pp melt blown filter high flow rate, good filtration efficiency and long service life

● Large particles are filtered in outer layers of melt blown cartridges which are constructed by coarse fiber

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

Installation of 40" 5 Micron PP Melt Blown Filter Cartridges


● Hongtek brand depth PP melt blown filters used for pre RO water filtration

● The central of PP filter elements are still no polluted, so that keep liquid clear after filtration

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

● High quality and reasonable price melt blown cartridges increase of longer service life and save much cost

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

Order Information
NPPIDODMicron RatingLengthEnd CapGasket/O-ring

NPP Series 

Nominal PP Melt Blown Filter Cartridges

A = 28mmC = 60mm1 = 1μm5 = 5"D = DOES = Silicone
5 = 5μm9.75 = 9.75"
Q = 61mm10 = 10μm9.8 = 9.8"T = 222/Flat(SOE)E = EPDM
20 = 20μm10 = 10"
M = 63mm30 = 30μm20 = 20"O = 222/Fin(SOE)V = Viton
B = 30mm50 =  50μm30 = 30"
75 = 75μm40 = 40"P = 226/Flat(SOE)
F = 65mm50 = 50"U = Buna
100 = 100μm60 = 60"L = 226/Fin(SOE)
70 = 70"

For Example:


NPP Series Nominal PP Melt Blown Filter Cartridges - 28mm - 63mm - 5μm - 40" - Double Open End (DOE)

Special specifications PP Melt Blown Filter Cartridges can be customized, such as special ID, OD, length and end caps etc.