Aperflux 851
Pilot operated gas pressure regulators

Aperflux 851

Aperflux 851 is pilot-controlled pressure regulator for medium and high pressure applications.

Aperflux 851 is normally a failed open regulator and specifically will open under the following conditions:

  • breakage of main diaphragm;
  • lack of feeding to the pilot loop.

This regulator is suitable for use with previously filtered, non-corrosive gases.

Features

Technical data
  • Design pressure
  • Design temperature
  • Minimum working differential pressure
  • Accuracy class
  • Closing pressure class SG
  • Flanging
  • Outlet pressure range of Wd
  • Available size DN
  • Maximum working differential pressure
  • Range of inlet pressure bpu
Value
  • up to 19,6 bar
  • -20°C a +60°C (higher or lower temperatures on request)
  • 0.5 bar - Recommended > 2 bar
  • up to 5
  • up to 10%
  • Class 150 RF according to ANSI B16.5 and PN16 according to ISO 7005
  • 12 to 1,073 PSIG (depending on the installed pilot)
  • 1", 2", 3", 4", 6", 8", 10"
  • 100 bar
  • 1,3 - 85 bar

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Pietro Fiorentini is a global leader in designing and construction of components and systems for natural gas.

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