Diffusers - middle-size bubble

Mivalt - Aeration elements - Diffusers - middle-size bubble - Diffusers Matala, ALO

Diffusers Matala, ALO


We distribute Matala membrane disc diffusers (BHB-MD225/MD310) - medium bubble.

Features and benefits

  • A rigid EPDM membrane with a highly durable base which is made of moulded polypropylene
  • Precisely perforated I-shaped slits open when air passes through and close at the end. Thanks to this function, the slits resist tearing and stay clean longer.
  • The standard G3/4 thread allows for a more comfortable connection
  • Standard stainless steel clamping rings DIN 1.4301 (AISI 304) hold the membrane firmly in place
  • Triple O-rings support the centre of the diaphragm when no air is flowing

Matala diffuser




Air flow

40 - 120 l/m

100 - 200 l/m

Disc body (material)


Nylon + laminate


EPDM (ethylene-propylene rubber)


DIN 1.4301 stainless steel - clamping ring


G3/4 thread


225 mm

310 mm


350 g

907 g

ALO diffuser - fine bubble

Technical data

Disk - 250

Disk - 320


  • Membrane with precise holes
  • Support container


High quality EPDM (ethylene-propylene rubber)/silicone



250 mm

320 mm

Bubble size

1 – 3 mm

1 – 3 mm

Air flow

  • Continuous operation

28 - 70 l/m

50 - 100 l/m




Ambient temperature

0 – 100 °C

0 – 100 °C

Effective diffusion surface

0,043 m2

0,068 m2

Diffusers Matala, ALO

Size calculator

Please input desired hydraulic flow and suspended solids content. Our calculator will suggest you optimum size of machine...

  • WT primary sludge - raw sludge from activation (ČOV – surový kal z aktivace): 0,5–1%
  • WWT secondary sludge - after final settling tank (ČOV – stabilizovaný, zahuštěný kal): 1,5–4 %
  • Sludge from DAF (Kal z flotace): 2–4 %
  • Biogas station sludges (Kaly z produkce bioplynu): 4–6 %
  • Grease traps, oil separation (Lapáky tuku, olejové aplikace): 4-6%
Material flow: 0 kg/h

Capacity of MP-DW  - dry material flow per hour :

  • MP-DW-131: 10 kg/h
  • MP-DW-201: 30 kg/h
  • MP-DW-301: 60 kg/h
  • MP-DW-302: 120 kg/h
  • MP-DW-401: 140 kg/h
  • MP-DW-402: 280 kg/h
  • MP-DW-403: 420 kg/h

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