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Cirval Lever-operated Gas Pressure Regulator

Brand: Pietro Fiorentini S.p.A.
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Hydrogen Compatible Hydrogen Compatible
The Cirval is a lever-operated gas pressure regulator controlled by a diaphragm and setting spring which controls the valve.

Mainly used for medium and low pressure natural gas distribution networks, as well as commercial and industrial applications.

It should to be used with previously filtered non-corrosive gases.

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

The Cirval is Hydrogen Ready for NG-H2 blending.
Features
  • Compact and Simple Design
  • High Accuracy
  • Fail Open Plug and Seat Regulator
  • Balanced Type
  • Top Entry
  • Easy Maintenance
  • Built-in Accessories
  • Biomethane Compatible and 20% Hydrogen Blending Compatible - Higher Blending Available on Request
The Cirval is a lever-operated gas pressure regulator controlled by a diaphragm and setting spring which controls the valve.

Mainly used for medium and low pressure natural gas distribution networks, as well as commercial and industrial applications.

It should to be used with previously filtered non-corrosive gases.

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

The Cirval is Hydrogen Ready for NG-H2 blending.
Features
  • Compact and Simple Design
  • High Accuracy
  • Fail Open Plug and Seat Regulator
  • Balanced Type
  • Top Entry
  • Easy Maintenance
  • Built-in Accessories
  • Biomethane Compatible and 20% Hydrogen Blending Compatible - Higher Blending Available on Request
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Specifications

Brand

Hydrogen Compatibility %

Hydrogen Compatible up to 100% Hydrogen Compatible up to 100% Hydrogen Compatible up to 30% Hydrogen Compatible up to 30% Hydrogen Compatible up to 20% Hydrogen Compatible up to 20%

Body

  • Ductile iron GS 400-18 ISO 1083

Cover

  • Die cast aluminum

Seat

  • Brass

Diaphragm

  • Nitrile rubber

Sealing Ring

  • Nitrile

Approvals

  • ANSI B109.4
  • CSA 6.18

Accuracy Class AC

  • Up to 10

Nominal Sizes DN

  • 3/4″
  • 1″ 1/2

Lock-up Pressure Class SG

  • Up to 20

Design Pressure

  • Up to 8.6 bar

Design Temperature

  • From -20 °C to +60 °C

Connections

  • 1″ 1/4
  • 1″ 1/2
  • 2″ according to ANSi B1.20.1
  • 2″ S.125FF according to ANSI B15.5

Minimum Differential Pressure

  • 0.12 bar

Range of Downstream Pressure Wd

  • From 0.017 to 0.82 bar

Inlet Pressure Range bpu

  • From 0.13 to 5 bar
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