Des-Case HydroGuard Breather

Des-Case HydroGuard Breather

Product Spotlight


Des-Case HydroGuard Breather



The Des-Case HydroGuard Breather uniquely features an expansion chamber and internal check valves that create a nearly-sealed system. Designed specifically for steady-state operations with minimal temperature fluctuations, these breathers provide excellent protection in continuous duty applications.


HydroGuard Breather Overview:



  • Expansion chamber and internal check-valve system create a nearly-sealed system
  • Eliminates rust-forming condensation
  • Prevents sludge deposits and water-contaminated oil
  • Provides longer oil and filter life
  • Reduces wear and tear on equipment, prolongs life


Industries include:

  • Oil & Gas
  • Wind Energy
  • Pulp & Paper
  • General Manufacturing


Applications include:

  • Gearboxes
  • Mixers / Agitators
  • Cooling Towers
  • Low-Flow Applications


Operating environments include:

  • Steady State Operations
  • High Humidity
  • Washdowns


Did you know?

  • New oil is not clean oil when it arrives to your site?
  • The “one size fits all” approach is not ideal when it comes to selecting breathers? It is best to find the right fit for each particular application.
  • Moisture contamination is the second most destructive contaminant in most systems?



As wet, contaminated air is drawn through the unit, multiple 3-micron polyester filter elements remove solid particulate while the colour-indicating silica gel extracts moisture. The diaphragm allows for expansion/contraction of the air within the casing, as a result of temperature variations during steady-state operations. When air is expelled from the container, the top foam pad prevents oil mist from contacting silica gel or entering the atmosphere.


Key features of the Des-Case HydraGuard Breather include:


1 Domed Cap
A domed cap allows for better washdown runoff

2 Expansion Chamber
The diaphragm allows for expansion/contraction of the air within the casing as a result of temperature variations during steady-state operations.

3 External Ribs
External ribs on shell to create greater durability and grip when installing or replacing breather

4 Integrated Nylon Standpipe
The integrated standpipe provides excellent vibration resistance and dissipates impact throughout the unit, eliminating weak points. It also allows even airflow distribution throughout the unit, eliminating inaccurate readings of desiccant saturation.

5 Integrated Drip Ring
An integrated drip ring keeps shedding water from entering the vent holes.

6 Threaded Mounting
Easily replaces standard filler/breather cap with multi-fit connection or one of several adapters.

7 Larger, High-Capacity Check Valves
High-capacity check valves allow for increased airflow at low cracking pressure.

8 Filter Element
Polyester filter element removes airborne contamination to 3-micron absolute. Unique loops allow particles to release during system exhalation, helping to increase breather life.

9 Enhanced Seal
An enhanced seal eliminates potential for airflow bypass.














The Des-Case HydroGuard Breather range includes the Des-Case DC-HG-1 and the Des-Case DC-HG-8.









For information on each product, please call and speak to our technical team and all product specification information can be viewed in this link.



At Neilson Hydraulics we stock and supply Des-Case Breathers. To enquire, please call T: 01709 801 002 to speak to a member of our technical sales team or visit our website to view the full Des-Case product range:


As a Des-Case distributor, we supply DES-CASE Standard Desiccant Breathers, DES-CASE HydroGuard® Hybrid Breathers, DES-CASE VentGuard™ Hybrid Breathers, DES-CASE Extreme Duty Breathers, DES-CASE Non-Desiccant Breathers, DES-CASE Breather Adaptor and Accessories.

Leave a Comment