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Reflux 819 Pressure Regulator

Brand: Pietro Fiorentini S.p.A.
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Reflux 819 is a pilot-operated gas pressure regulator. It is particularly suitable for high-pressure transmission systems and for medium pressure natural gas distribution networks, and it can be used with previously filtered non-corrosive gases.

Reflux 819 is classified as Fail Close according to the European Standard EN 334.

Reflux 819 is Hydrogen Ready for NG-H2 blending.
Features
  • Accuracy class: up to 1
  • Available size DN: 1″, 2″, 3″, 4″, 6″, 8″, 10″, 12″
  • Closing pressure class SG: up to 2.5
  • Design pressure: up to 100 bar
  • Design temperature: from -10° to +60° C (higher or lower temperatures on demand)
  • Flanging: class 150, 300, 600 RF or RTJ according to ASME B16.5 and PN 16 according to ISO 7005
  • Minimum working differential pressure: 450 mbar
  • Outlet pressure range of Wd: from 0.3 to 74 bar
  • Range of inlet pressure bpu: from 0.5 to 100 bar
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Reflux 819 is a pilot-operated gas pressure regulator. It is particularly suitable for high-pressure transmission systems and for medium pressure natural gas distribution networks, and it can be used with previously filtered non-corrosive gases.

Reflux 819 is classified as Fail Close according to the European Standard EN 334.

Reflux 819 is Hydrogen Ready for NG-H2 blending.
Features
  • Accuracy class: up to 1
  • Available size DN: 1″, 2″, 3″, 4″, 6″, 8″, 10″, 12″
  • Closing pressure class SG: up to 2.5
  • Design pressure: up to 100 bar
  • Design temperature: from -10° to +60° C (higher or lower temperatures on demand)
  • Flanging: class 150, 300, 600 RF or RTJ according to ASME B16.5 and PN 16 according to ISO 7005
  • Minimum working differential pressure: 450 mbar
  • Outlet pressure range of Wd: from 0.3 to 74 bar
  • Range of inlet pressure bpu: from 0.5 to 100 bar
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Specifications

Brand

Accuracy Class

  • Up to 1 %

Available Size DN

  • 12”
  • 8”
  • 6”
  • 4”
  • 3”
  • 2”
  • 1”
  • 10”

Closing Pressure Class SG

  • 5 % to 1 % Depending on Outlet Pressure

Design Pressure

  • Maximum 1,450 psig

Design Temperature

  • 10° to 60° C (14° to 140° F)

Flanging

  • 150-300-600 RF or RTJ According to ANSI B16.5 and PN 16 According to ISO 7005

Maximum Working Differential Pressure

  • 99.7 psig

Minimum Working Differential Pressure

  • 7.25 psig

Outlet Pressure Range of Wd

  • 5 to 1073 psig

Range of Inlet Pressure Bpu

  • 11.6 to 1450 psig
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