Description
The pressure regulators FG/FGB/FGB-M are designed to reduce natural gas and lp gas pressure
for civil, industrial and commercial applications in secondary pressure reducing station of gas
network and all installation where rapid flow rate variation is required (burners, industrial ovens,
boilers, etc..). They are suitable for low, medium and high pressure.
Product information
The FG series pressure regulators are direct acting spring loaded regulator type, controlled by a
diaphragm and counter spring. The balanced valve design ensures constant pressure setting
when upstream pressure varies. Designed to deliver high regulation accuracy, these devices are
suitable for use with non-corrosive gases, previously filtered. The FG series pressure regulators
are “top entry” design, which allows an easy maintenance without removing the body from the
pipeline.
The FGB version is with incorporated safety shut off device (SSV or Upso-Opso) against over and
under outlet pressure.
FGB-M version is the monitor solution of FG regulator incorporating safety shut off device (SSV or
Upso / Opso). The monitor is a safety pressure regulator which grant flow control in place of the
main regulator if, in the event of failure of this latter, downstream pressure reach the monitor setpoint.
The regulators FG/FGB/FGB-M are CE marked and approved by Bureau Veritas under the
Pressure Equipment Directive 2014/68/UE (PED) according with EN 334 / EN 14382.
The regulators are supplied with internal sensing line and presetted for external sensing line
installed by the customer as option.
Main features
• Low/medium/high pressure versions
• High regulation accuracy
• High flow rate
• Spring loaded
• Fully balanced valve design
• EN 334 / EN 14382 compliance
• Threaded and flanged connections DN 40×40
• Compact design
• Easy maintenance (top entry design)
• Incorporated SSV (UPSO/OPSO) safety device (FGB and FGB-M version)
• Incorporated relief valve
• Incorporated antipumping device
• Incorporated silencer for noise reduction (option)
• Monitor version
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