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Transformer Breathers

Transformer Breathers


With Transformer Breathers, you can be rest assured that your transformers will operate well. The malfunction or failure of transformers can be caused by the lack of proper control of the level of water vapour entering equipment or humidity level surrounding the equipment leading to condensation. Transformer Breathers perfectly dehumidify and control the humidity level in the air space above the conservator tank.

Stream Peak’s Transformer Breathers are filled with Envirogel – an indicating silica gel desiccant that changes colour from orange to green when it is saturated with moisture. This will give you a visual indication of when the desiccant needs to be changed, ensuring proper protection for your transformer oil.  It is easy to install, weather resistant, tamper-proof and has an operating temperature range from -50°C to +70°C. Its adsorption capacity is up to 25%.

Protect your transformers from high humidity, water condensation, pressure variations, dielectric loss, mould growth, and outgassing. Speak to our experts for a consultation on the suitable product to solve your problem!

  • High performance plastic or metal construction
  • Simple installation
  • Suitable for 1250 kVA to 750 mVA Transformers
  • Low dusting beaded Envirogel adsorbent
  • up to 25% adsoption capacity
  • definitive colour change saturation indication
  • IP65 rating
  • operating temperature range -50°C to +70°C
  • Vandal proof
  • Weather resistant


At Stream Peak, we supply a variety of transformer breather adaptors to suit your needs!

Desiccant Reactivation Unit

Desiccant Reactivation UnitThe Desiccant Reactivation Unit is specially designed to recover saturated silica gel (Envirogel).

Desiccant Refills

Desiccant refillEnvirogel desiccant changes from orange in colour to green as it becomes saturated with water vapour.

Mark 7

Mark 7Mark 7 transformer breathers are made up of mild steel protected with phosphate and powder coat finish.

R, R1, R2 and R3

R, R1, R2 and R3The ‘R’ series Transformer Breathers are made of UV stabilised polycarbonate.

V, W, X, Y & Z Series

V, W, X, Y & Z SeriesThe V, W, X, Y, & Z series of Transformer Breathers are air dryers for large capacity transformer oil tanks.

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