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WEH Coalescing filters



Interested in learning more about the coalescing filters?

The WEH® CNG and H2 coalescing filter was developed to remove particles from the gas flow. When filtering the gas flow, the coalescing filter reliably removes contaminants such as oil, water and dirt particles which are contained in the gas. This contamination is isolated by the coalescing filter.

Natural gas flows through the filter, whereas contaminants such as oil, water and other aerosols coalesce, and drop into the sump of the filter, where they are separated into a drain port.

The filters are easy to maintain and can be installed onboard vehicles and in fuelling stations at any time.


  • ECE approval available
  • Fine filter with high particle removal efficiency (efficiency of approx. 99.9% > 0.3 micron)
  • For installation onboard CNG and H2 vehicles and in fuelling stations
  • Protection of critical components in the fuel system
  • Laterally offset flow possible
  • Aluminium construction
  • Ease of maintenance



For more information please contact Rogier van Zijl op +31 6 48 62 39 12 or email [email protected]



Technical specifications

Nominal bore DN Acc. to design
Pressure range for CNG, PN = 200 bar (3,000 psi) | PS = 260 bar | PT = 390 bar (ECE)
for h2 PN = 350 bar (5.000 psi) | PS = 450 bar | PT = 675 bar
Temperature range -40 °C up to +120 °C
Material Corrosion resistant
Housing: aluminium
Sealing material Natural gas compatible
Hydrogen compatible
Filter element < 1 micron
Registrations E1 110R-000189 (ECE)
E1 00 0004 (Regulation (EC) No. 79/2009)
PED97/23EC: CE0036



Please fill in the form below, if you want to receive more extended information about the coalescing filters.


More information?

Please contact:

Rogier van Zijl

Account manager

+31 70 413 07 55