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Aperval is a pilot-controlled pressure regulator for medium and low pressure applications.

Aperval is normally a fail open regulator and will open specifically under the following conditions:
  • If the  main diaphragm fails
  • If there is no sensor line input
This regulator is suitable for use with previously-filtered, non-corrosive gases.
Features
  • Design pressure: up to 362 PSIG (25 bar) 
  • Temperature: Pietro Fiorentini regulators are suitable for a minimum operating ambient temperature: 
    • -40° to 140° F with a Carbon Steel Body
    • -4° to 140° F with a Cast Iron Body
  • If the following conditions are met: 
    • Inlet flowing gas temperature shall be always higher than -4° F
    • Inlet flowing gas shall be filter, clean and without any liquid impurities
  • Range of inlet pressure bpe: 7.25 to 362 PSIG (0.5 to 25 bar) 
  • Range of outlet pressure Wh: 2” w.c. to 137.5 PSIG (5 mbar to 9,500 mbar) depending on installed pilot 
  • Minimum working differential pressure: 6.52 PSIG (450 mbar) 
  • Maximum working differential pressure: 275.5 PSIG (19 bar) 
  • Accuracy class AC: up to 2.5 > Closing pressure class SG: up to 5 
  • Available size DN: 1”, 2”, 2-1/2", 3”, 4” 
  • Flanging: class 150 RF or RTJ according to ANSI B16.5 and PN25/40 according to ISO 7005

Specifications

Accuracy Class

  • Up to 2.5

Available Size DN

  • 1”
  • 2”
  • 2-1/2”
  • 3”
  • 4”

Closing Pressure Class SG

  • Up to 5

Design Pressure

  • Up to 25 bar (362 psig)

Design Temperature

  • -10° to 60° C (14° to 140° F)

Flanging

  • 150 RF or RTJ According to ANSI B16.5 and PN 25/40 According to ISO 7005

Maximum Working Differential Pressure

  • 19 bar (275.5 psig)

Minimum Working Differential Pressure

  • 450 mbar (7.25 psig)

Outlet Pressure Range of Wd

  • 5 mbar to 9,500 mbar (2” w.c. to 137.5 psig)

Range of Inlet Pressure Bpu

  • 0.5 to 2.5 bar

Documentation

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