The FEX is a two-stage gas pressure regulator for low pressure equipped with integrated slam shut (OPSO and UPSO), and optional fire protection valve. It is particularly suitable for low pressure natural gas distribution networks for residential and commercial users. It should be used with previously filtered non-corrosive gases including biomethane and natural gas blended with hydrogen.

The FEX is Hydrogen Ready for NG-H2 blending.


  • Accuracy class AC: 10
  • Connections: Inlet G 1” and outlet G 1”1 /2 according to ISO 228/1, other configurations or connections on request
  • Lock-up pressure class SG: 20
  • Safety accuracy class AG: 10 (min 2 mbar)
  • Design pressure: 8.6 bar
  • Inlet pressure: from 0.1 to 8.6 bar
  • Ambient temperature:
    • Standard version from -20°C to +60°C
    • Extended temperature version from -30°C to +60°C
    • Artic version from -40°C to +60°C
  • Minimum differential pressure: 0.3 bar FEX50, 0.4 bar FEX75, 0.6 bar FEX100
  • Range of downstream pressure:
    • Wds from 13 to 99 mbar for BP, from 100 to 350 mbar for MP
    • Wdso from 32 to 159 mbar for BP, from 160 to 500 mbar for MP
    • Wdsu from 6 to 79 mbar for BP, from 80 to 250 mbar for MP



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Technical Manual

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Technical brochure

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