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Aperflux 851 Pressure Regulator
Brand: Pietro Fiorentini S.p.A.The Aperflux 851 is a 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
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