Reflux 819/FO

Description

Reflux 819/FO is a pilot-operated gas pressure regulator classified as Fail Open according to the European Standard EN 334.

Its use is strongly recommended in high-pressure transmission systems and in medium pressure natural gas distribution networks. It is suitable for use with previously filtered non-corrosive gases.

Reflux 819/FO is Hydrogen Ready for NG-H2 blending.

Features

  • Accuracy class AC: up to 2.5
  • Nominal sizes DN: 1″, 2″, 3″, 4″, 6″, 8″, 10″, 12″
  • Lock-up pressure class SG: up to 5
  • Design pressure: up to 102 bar
  • Design temperature: from -20 °C to +60 °C
  • Connections: class 150, 300, 600 RF or RTJ according to ASME B16.5 and PN 16 according to ISO 7005
  • Minimum differential pressure: 2 bar when used alone
  • Range of downstream pressure Wd: from 1 to 74 bar
  • Inlet pressure range bpu: from 3 to 102 bar

Configurations

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

Documentation

Flyer

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Technical Manual

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Poster

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Technical brochure

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Hydrogen compatibility declaration

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