Ex e / Ex d breather drain

Exe breather drain Data Sheet Documentation Back

Ex e /Ex d breather drain



  • Manufactured from a range of materials including: Brass, Nickel plated brass and Stainless steel.
  • ISO and NPT sizes
  • Suitable for hazardous areas Ex e and Ex d
  • Certified to Ex II 2GD / Ex IIC / Ex tb IIIC Db / Ex I M2 / Ex e I Mb / Ex d I Mb
  • Protection class: IP66 (Dustproof and protection from water jets)
  • Temperature rating -20ºC to +80ºC
  • Special lock nut is also supplied with these breather drains.


SIRA 09 ATEX 1240U

Ex protection type (EN 50018/IEC 60079- 1 and EN 50019/IEC 60079-7)



Ex tb IIIC Db

Ex I M2

Ex e I Mb

Ex d I Mb

Ingress protection levels

IP66 (EN 60529/IEC 60529)

Ambient temperature

-20ºC to +80ºC

Fluctuations in temperature within an enclosure can lead to condensation. Condensation forms rapidly particularly inside airtight enclosures because humidity cannot escape and this can lead to component damage and in extreme cases short circuits or failure of the unit. It is possible to alleviate this potential problem through the use of breather drains which allow condensation moisture to escape from the base of enclosure.IP66 Breather drains are available in nickel plated brass, unfinished brass and stainless steel for Ex e and Ex d enclosures to Ex II 2 GD, Ex e IIC Gb, EX tb IIIC Db, Ex I M2, Ex d I Mb and Ex e I Mb. Sizes are M20, M25 and NPT ½” and ¾”.


Thread size
Nut size  L
Brass Nickel plated brass Stainless steel
77001521 75001521 76001521 M20 27 16
77001526 75001526 76001526 M25 31.75 16
77001013 75001013 76001013 NPT ½” 27 20
77001035 75001035 76001035 NPT ¾” 31.75 20
Technical data (Extract) (For detailed information please click here)

Protection class

IP 66 (EN 60529/IEC 60529)


see data sheet


 Brass, Nickel Plated Brass and Stainless Steel.


see data sheet


Impact resistance – see data sheet



Exd Breather Drain

Exe Breather Drain


Declaration of Conformity


Customer requirements


Operating Instructions