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Cirval Lever-operated Gas Pressure Regulator

Brand: Pietro Fiorentini
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

Specifications

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° 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

Why Choose The Cirval Lever-operated Gas Pressure Regulator

Value Elements
  • Reliable Gas Pressure Regulation: Lever-operated, diaphragm-controlled design maintains stable downstream pressure despite changes in inlet pressure and gas demand, supporting consistent natural gas delivery.

  • Accurate Pressure Control: Balanced valve design provides dependable pressure regulation, with an accuracy class of up to AC 10 for medium and low-pressure natural gas distribution applications.

  • Simplified Maintenance: Compact construction and top-entry design provide easier access to internal components, helping reduce maintenance complexity and equipment downtime.

  • Integrated Safety Options: Available with slam-shut valves, independent monitoring devices (IMD) and integral full monitors (IFM) to support additional overpressure protection.

  • Flexible Installation Options: Multiple connection sizes and configurations allow integration into natural gas distribution systems, district regulator stations and commercial gas installations.

  • Hydrogen and RNG Compatibility: Compatible with biomethane and natural gas blends containing up to 20% hydrogen, supporting Canadian utilities incorporating alternative gases into their networks.

  • Canadian Industry Standards: Designed according to ANSI B109.4 and CSA 6.18 requirements, supporting applications within Canadian natural gas distribution infrastructure.

Comparison vs. Next Best Alternative
  • Compared to Conventional Direct-Operated Regulators: Balanced valve construction helps maintain consistent downstream pressure when inlet pressure and flow demand fluctuate.

  • Simplified Regulator Maintenance: Top-entry access provides easier servicing of internal components compared to regulator designs requiring more extensive disassembly.

  • Greater Safety Flexibility: Optional slam-shut and monitoring devices provide additional pressure protection configurations compared to basic regulators without integrated safety accessories.

  • Reduced Installation Complexity: Compact design and available built-in accessories help simplify integration into natural gas pressure regulation systems.

  • Future-Ready Gas Compatibility: Biomethane and hydrogen blending compatibility provides greater flexibility for utilities adapting to evolving natural gas distribution requirements.

Where Do I Use This Product and Why?
  • Natural Gas Distribution Networks: Provides reliable medium and low-pressure regulation to maintain consistent downstream gas pressure in utility distribution systems.

  • Gas Distribution Regulator Stations: Supports pressure reduction and control at natural gas distribution stations serving residential, commercial and industrial customers.

  • Commercial Natural Gas Applications: Maintains stable gas pressure for commercial facilities requiring reliable natural gas supply.

  • Industrial Gas Pressure Regulation: Provides controlled downstream pressure for compatible industrial natural gas equipment and processes.

  • Natural Gas Pressure Reduction Stations: Helps manage pressure fluctuations and maintain consistent gas delivery as natural gas moves through distribution infrastructure.

  • Gas Distribution Infrastructure Upgrades: Offers Canadian utilities a compact, serviceable pressure regulator for replacing or upgrading existing gas pressure control equipment.

  • Renewable Natural Gas Applications: Supports compatible RNG and hydrogen-blended natural gas networks as Canadian utilities diversify their gas supply.