Reflux 819/FO
Pilot-operated gas pressure regulators

Reflux 819/FO

Reflux 819/FO is a downstream pilot-controlled pressure regulator for medium and high pressure applications.
It is particulary suitable for use within the framework of installation for the distribution of natural gas, as well as for supplying network for civil and industrial use.

The Reflux 819/FO regulator is classified according to the European standard EEN 334 as a regulator which reacts in opening (Fail to open).

Features

Technical data
  • 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
  • -10°C to +60°C
  • 2 bar when used alone; 0,5 bar when used in combination with a Reflux 819 FC monitor
  • up to 1%
  • from 5% to 1% depending on outlet pressure
  • class 150-300-600 RF or RTJ according to ANSI B16.5 and PN 16 according to ISO 7005
  • 1 to 74 bar
  • 1", 2", 3", 4", 6", 8", 10"
  • 99 bar
  • 3 to 102 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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