MaxiPleat Kassettenfilter

Viledon HEPA and ULPA Filters

Viledon HEPA and ULPA filters, produced with our patented thermal embossing process or in minipleating technique, are available in filter classes H10 to U17. In the thermal embossing process, a complementary pair of rolls simultaneously embosses conical dimples and the subsequent pleat tips into a heated micro-glassfibre paper. The glassfibre paper contains a thermoplastic bonder, which becomes fluid during the embossing process and then hardens again, fixing the embossed structures in the paper. The embossed dimples create the spaces between the pleats in the finished pleat pack, i.e. after pleating the filter medium keeps itself spaced. The optimised V-shaped pleat geometry ensures homogeneous air passage and low-turbulence downstream air flow with low pressure drops even at high volume flows. In the minipleating technique, thin hotmelt threads serve for fixing and spacing the pleats.

From Filter Class H13, quality is assured by individual testing of each filter using an oil-thread or a leading-edge scan test rig. The filter elements can be manufactured in one piece in widths of up to 1220 mm and lengths of up to 1830 mm, with pleat depths of up to 100 mm (minipleating technique) or up to 280 mm (embossing technique). They are available in numerous different versions, corrosion-proof, easy to install, and eco-compatible to dispose of.

As a special innovation, we offer HEPA filters with frames and protection grids made of plastic. The patented frame design combines crucial product advantages: Plastic-framed HEPA filters are not only very stable, microbiologically safe, moisture-resistant and lightweight, but also fully incinerable. They meet the hygiene requirements for HVAC systems, and their suitability for cleanrooms up to Cleanliness Class 2 according to ISO 14644-1 (Class 0.1 to US Fed.Std. 209) was tested and certified by the German Fraunhofer Institute for Manufacturing Engineering and Automation, IPA.

Filter
Class		 Efficiency
for
MPPS*
nach DIN EN 1822		 Version Depth
without
gasket		 Pleat
depth		 Face
velocity		 Nom. air
flow rate
for 610 x 610
mm²
element		 Pressure
drop
H11 ≥ 95 % plastic or steel
sheet frame		 150 mm 100 mm 1,49 m/s 2.000 m³/h 160 Pa
H11 292 mm 200 mm 2,37 m/s 3.000 m³/h 160 Pa
H11 292 mm 280 mm 2,54 m/s 3.400 m³/h 160 Pa
H13 ≥ 99,95 % aluminium frame 68 mm 50 mm 0,90 m/s 1.200 m³/h 240 Pa
H13 78 mm 50 mm 0,90 m/s 1.200 m³/h 240 Pa
H13 plastic or steel sheet frame 150 mm 100 mm 1,12 m/s 1.500 m³/h 220 Pa
H13 292 mm 200 mm 1,87 m/s 2.500 m³/h 250 Pa
H13 292 mm 280 mm 2,54 m/s 3.400 m³/h 250 Pa
H13 MDF frame 78 mm 50 mm 0,90 m/s 1.200 m³/h 250 Pa
H13 150 mm 50 mm 0,90 m/s 1.200 m³/h 250 Pa
H13 150 mm 125 mm 1,12 m/s 1.500 m³/h 250 Pa
H13 292 mm 200 mm 1,51 m/s 2.000 m³/h 250 Pa
H13 for high
volume flows,
steel sheet frame		 292 mm 25 mm /
12 pleat
panels		 2,99 m/s 4.000 m³/h 250 Pa
H14 ≥ 99,995 % aluminium frame 68 mm 50 mm 0,45 m/s 600 m³/h 120 Pa
H14 88 mm 70 mm 0,45 m/s 600 m³/h 90 Pa
H14 aluminium frame
with
fluid gel seal		 80 mm 50 mm 0,45 m/s 600 m³/h 120 Pa
H14 102 mm 70 mm 0,45 m/s 600 m³/h 90 Pa
H14 filter/hood module,
alu frame + plastic
plenum hood		 200 mm 50 mm 0,45 m/s 600 m³/h 140 Pa
H14 plastic
frame
 292 mm 280 mm 1,27 m/s 1.700 m³/h 150 Pa
H14 MDF frame 78 mm 50 mm 0,45 m/s 600 m³/h 120 Pa
H14 150 mm 50 mm 0,45 m/s 600 m³/h 120 Pa
H14 150 mm 125 mm      
H14 292 mm 200 mm 1,51 m/s 2.000 m³/h 280 Pa
H14 for high
volume flows,
steel sheet frame		 292 mm 25 mm /
12 pleat panels		 2,99 m/s 4.000 m³/h 320 Pa
U15 ≥ 99,9995 % aluminium frame 68 mm 50 mm 0,45 m/s 600 m³/h 145 Pa
88 mm 70 mm 0,45 m/s 600 m³/h 115 Pa
aluminium frame
with fluid gel
seal 		80 mm 50 mm 0,45 m/s 600 m³/h 145 Pa
102 mm 70 mm 0,45 m/s 600 m³/h 115 Pa
filter/hood module,
alu frame + plastic
plenum hood 		235 mm
250 mm		 50 mm 0,45 m/s 600 m³/h 155 Pa

Other versions are available upon request.

* MPPS = Most Penetrating Particle Size

Our product range also comprises

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