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

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

Pressure differentials in enclosures with a high degree of protection are a result of internal and external temperature changes. In the case of negative pressure or partical vacuum, dust and humidity can enter the enclosure through the door seal. When the air inside the enclosure cools down, condensation may occur because the humidity cannot escape the enclosure. The easy-to-install pressure compensation device DA 284 provides compensation of pressure at a protection degree of IP66. Even with a slight overpressure, a waterproof membrane inside the plug allows the humidity to escape whilst blocking water and dirt from entering the enclosure.

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