The governors with and without filter with double safety diaphragm in the Pietro Fiorentini range are equipped with a balanced device. They represent the ideal solution for supplying burners.

They can be used with previously filtered non-corrosive gases and are widely used in the construction of low pressure natural gas distribution networks to industrial, commercial and residential users.

These devices comply with standard EN 88-1 and are Hydrogen Ready for NG-H2 blending.


  • Accuracy class AC: 15
  • Nominal sizes DN: 1/2″, 3/4″, 1″, 1″ 1/4, 1″ 1/2, 2″
  • Lock-up pressure class SG: +7.5 mbar or 30%
  • Design pressure: 1 bar
  • Design temperature: from -15 °C to +60 °C
  • Connections: according to UNI EN ISO 228-1:2003; according to NF E29-533:2014 and NF E29-536:2017
  • Minimum differential pressure: 2,5 mbar
  • Range of downstream pressure Wd: from 5 to 300 mbar
  • Inlet pressure range bpu: from 2.5 to 500 mbar
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