Pressure Compensation Device (Stainless Steel/Aluminium)
DA 284 | IP66 / IP67

  • High degree of protection
  • Waterproof membrane
  • Corrosion resistant
  • Food safe

In enclosures and housings with a high protection class, differential pressure happens due to internal and external temperature changes. In the event of negative pressure, dust and humidity can be drawn into the enclosure through the seals on the doors. This can cause condensation when the air in the enclosure cools down. The easy-to-fit DA 284 pressure compensation device enables pressure compensation with protection class IP66 (M12: IP67). Additionally, the watertight membrane inside the pressure compensation device allows humidity to escape from the cabinet at overpressure, while preventing water, humidity or dirt intrusion at under pressure.

Torque5 Nm
Depth in enclosureapprox. 9 mm
Sealingsealing gasket NBR
Filterwaterproof membrane
DimensionsM40: Ø 58 x 31mm, M12: Ø 17 x 21 mm
Fitting positionvariable
Operating/Storage temperature-35 to +80°C (-31 to +176°F)
NoteMaterial adheres to limit values in accordance with RoHS3

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Make cut-out Ø 40.5+0,5mm in enclosure wall and mount pressure compensation device with nut. Please make sure that the sealing gasket is put in place on the outer side panel of the enclosure. For optimal pressure compensation we recommend to use two devices on opposite sides towards the top of the enclosure.

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Art. No.Thread MaterialProtection typeAir permeability1 packaging unitWeight (approx.)
28401.0-00M40 x 1,5V2A (DIN 1.4305 / AISI 303)1IP66 (EN 60529) / IPX9K (EN 40050-9)1.200 l/h1 piece0.2kg
28401.0-02M40 x 1,5V4A (DIN 1.4404 / AISI 316L)IP66 (EN 60529) / IPX9K (EN 40050-9)1.200 l/h1 piece0.2kg
28404.0-00M12 x 1,5Nickel-plated aluminium2IP 67220 l/h1 piece0.009 kg

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1 V2A is not sea waterproof

2 Corrosion test according to ISO 9227:2017

Technical drawing

DA 284
stainless steel
DA 284 aluminium