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Aperflux 851 Pressure Regulator

Brand: Pietro Fiorentini S.p.A.
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The Aperflux 851 is pilot-controlled pressure regulator for medium and high pressure applications.

Aperflux 851 is normally a fail open regulator and will open specifically under the following conditions:
  • If the main diaphragm fails
  • If there is no feed to the pilot loop
This regulator is suitable for use with previously-filtered, non-corrosive gases.
Features
  • Design pressure: up to 14,50 PSIG (100 bar) 
  • Temperature: Pietro Fiorentini regulators are suitable for a minimum operating ambient temperature -40° to 140° F with a Carbon Steel Body
  • If the following conditions are met: 
    • Inlet flowing gas temperature shall be always higher than -4° F
    • Inlet flowing gas shall be filtered, clean and without any liquid impurities
  • Range of inlet pressure bpe: 18.8 to 1,230 PSIG (1.3 to 85 bar) 
  • Range of outlet pressure Wh: 12 to 1,073 PSIG (0.8 to 74 bar) depending on installed pilot 
  • Minimum working differential pressure: 7.25 PSIG (0.5 bar) - Recommended > 30 PSIG (2 bar) 
  • Accuracy class AC: up to 1% > Closing pressure class SG: from 5% to 1.5% depending on outlet pressure 
  • Available size DN: 1” -2” -3” -4” -6” -8” -10” 
  • Flanging: class 150-300-600 RF or RTJ according to ANSI b16.5 and PN16 according to ISO 7005
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The Aperflux 851 is pilot-controlled pressure regulator for medium and high pressure applications.

Aperflux 851 is normally a fail open regulator and will open specifically under the following conditions:
  • If the main diaphragm fails
  • If there is no feed to the pilot loop
This regulator is suitable for use with previously-filtered, non-corrosive gases.
Features
  • Design pressure: up to 14,50 PSIG (100 bar) 
  • Temperature: Pietro Fiorentini regulators are suitable for a minimum operating ambient temperature -40° to 140° F with a Carbon Steel Body
  • If the following conditions are met: 
    • Inlet flowing gas temperature shall be always higher than -4° F
    • Inlet flowing gas shall be filtered, clean and without any liquid impurities
  • Range of inlet pressure bpe: 18.8 to 1,230 PSIG (1.3 to 85 bar) 
  • Range of outlet pressure Wh: 12 to 1,073 PSIG (0.8 to 74 bar) depending on installed pilot 
  • Minimum working differential pressure: 7.25 PSIG (0.5 bar) - Recommended > 30 PSIG (2 bar) 
  • Accuracy class AC: up to 1% > Closing pressure class SG: from 5% to 1.5% depending on outlet pressure 
  • Available size DN: 1” -2” -3” -4” -6” -8” -10” 
  • Flanging: class 150-300-600 RF or RTJ according to ANSI b16.5 and PN16 according to ISO 7005
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Specifications

Brand

Accuracy Class

  • Up to 5

Available Size DN

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

Closing Pressure Class SG

  • Up to 10 %

Design Pressure

  • up to 102 bar

Design Temperature

  • -20° to +60° C

Flanging

  • Class 150 RF According to ANSI B16.5 and PN 16 According to ISO 7005

Maximum Working Differential Pressure

  • 87.5 bar

Minimum Working Differential Pressure

  • 0.5 bar

Outlet Pressure Range of Wd

  • 12 to 1,073 psig

Range of Inlet Pressure Bpu

  • 1.3 to 85 bar
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