Aperval 101


Aperval 101 is one of the pilot-operated gas pressure regulators produced by Pietro Fiorentini.

This device is suitable for use with previously filtered non-corrosive gases, and it is mainly used for medium and low pressure natural gas distribution networks.

It is classified as Fail Open according to the European Standard EN 334.

Aperval 101 commissioning instruction (pdf)


  • Accuracy class AC: up to 5 | up to 1% absolute (depending on working conditions)
  • Nominal sizes DN: 2″, 3″, 4″
  • Lock-up pressure class SG: up to 10
  • Design pressure: up to 18.9 bar
  • Design temperature: from -10 °C to +60 °C (higher or lower temperatures on demand)
  • Connections: class 125FF, 125 RF and 150 RF according to ASME B16.1, and PN 16 according to ISO 7005-2
  • Minimum working differential pressure: 480 mbar
  • Range of downstream pressure Wd: from 20 to 9500 mbar
  • Inlet pressure range bpu: from 0.5 to 18.9 bar
Scroll to top
Please turn to portrait for a better experience

Please turn to portrait
for a better experience