Direct-operated gas pressure regulator controlled by a diaphragm and contrasting regulated spring action, Trias is suitable for use with previously filtered non-corrosive gases.

Its use is strongly recommended in medium and low pressure natural gas distribution networks.

According to the European Standard EN 334, it is classified as Fail Open.


  • Accuracy class AC: up to 5
  • Nominal sizes DN: 1″ 1/2, 2″
  • Lock-up pressure class SG: up to 100
  • Design pressure: up to 19.2 bar
  • Design temperature: from -20 °C to +60 °C
  • Connections: class 150 RF according to ASME B16.5 and PN 16 according to ISO 7005
  • Range of downstream pressure Wd: from 15 to 4000 mbar
  • Inlet pressure range bpu: from 0.2 to 18 bar


The configuration options can be compounded and aggregated differently. Please refer to the technical manual for all available combinations.
Slam shut
Double lock



Click to download the file
Scroll to top
Please turn to portrait for a better experience

Please turn to portrait
for a better experience