FE 25/50

The FE25 / FE50 is a two-stage gas pressure regulator by Pietro Fiorentini. 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.

According to the European Standard EN 334, it is classified as Fail Close because it is always supplied with an overpressure protection device (slam shut valve).

The FE25 / FE50 is Hydrogen Ready for NG-H2 blending.

• Accuracy class AC: 10
• Connections: In-line 3/4” or 1” NPT according to ANSI B1.20.1, other configurations or connections on request
• Lock-up pressure class SG: 20, minimum 3” w.c. | 0.75 kPa
• Inlet pressure: 1.45 psig to 125 psig | from 10 kPa to 0.86 MPa
• Ambient temperature: standard version from -20°F to +150°F | -30°C to +65°C, arctic version from -40°F to +150°F | -40°C to +65°C
• Range of downstream pressure:
  • Wds from 5.2” w.c. to 2.6 psig | 1.3 kPa to 18 kPa for BP, from 4.35 psig to 5.8 psig | 30 kPa to 40 kPa for MP
  • Wdso from 14” w.c. to 3.5 psig | 3.5 kPa to 24.1 kPa for BP, from 4.3 psig to 11.6 psig | 30 kPa to 80 kPa for MP