Aperval H


The Aperval H is one of the pilot-operated gas pressure regulators designed and manufactured by Pietro Fiorentini. 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″, 2″, 2″ 1/2, 3″, 4″
  • Lock-up pressure class SG: up to 10
  • Design pressure: up to 25 bar
  • Design temperature: from -20 °C to +60 °C
  • Connections: class 150 RF or RTJ according to ASME B16.5 and PN16 according to ISO 7500
  • Minimum differential pressure: 0.45 bar
  • Range of downstream pressure Wd: from 0.005 to 9.5 bar
  • Inlet pressure range bpu: from 0.5 to 25 bar


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