Dival 600 H


Dival 600 H is part of Pietro Fiorentini’s range of direct-acting gas pressure regulators with diaphragm control and spring contrast. This device is suitable for 100% hydrogen applications.

It is used in medium and low-pressure gas distribution networks.

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

Click here to see the product page in the NG version / NG-H2 blending (up to 20%) version.


  • Accuracy class AC: up to 5
  • Nominal sizes DN: 1″, 1″ 1/2, 2″
  • Lock-up pressure class SG: up to 10 (depending on version and set point)
  • Design pressure: up to 20 bar
  • Design temperature: from -20 °C to +60 °C
  • Connections: flanged class 150 RF according to ASME B16.5 and ASME B16.42
    ANSI class 125 FF according to ASME B16.1, PN 16 and 25 according to ISO 7005-1 and ISO 7005-2
    threaded: Rp EN 10226-1, NPT ASME B1.20.1 (only for DN50/2″”)
  • Minimum differential pressure: 0.1 bar
  • Range of downstream pressure Wd: from 12 to 4,200 mbar
  • Inlet pressure range bpu: from (Pd + 0.1) bar to 20 bar


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