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Reflux 819 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 regulator is classified according to the European standard EEN 334 as a regulator which reacts in closure (Fail to close).
Available size DN
Closing pressure class SG
Minimum working differential pressure
Outlet pressure range of Wd
Range of inlet pressure bpu
Maximum working differential pressure
up to 1%
1"- 2"- 3"- 4"- 6"- 8"- 10"- 12"
5% to 1% depending on outlet pressure
up to 1,450 PSIG
-10°C to +60°C (+14 to +140°F) (higher or lower temperatures on demand)
150-300-600 RF or RTJ according to ANSI B16.5 and PN 16 according to ISO 7005