Gas pressure regulator Reflux 819

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PILOT-OPERATED GAS PRESSURE REGULATORS Reflux 819 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). Functional features:* ¢ Maximum inlet pressure: Up to 102 bar ¢ Range of downstream pressure: from 0,3 bar to 74 bar depending on installed pilot (see Pilot section). ¢ Minimum working differential pressure: 0,5 bar ¢ Minimum ambient temperature: Execution up to -40°C, ¢ Maximum ambient temperature: +60°C ¢ Inlet gas temperature: Up to -20°C + 60°C, ¢ Accuracy class AC: Up to 1 ¢ Lock-up pressure class SG: Up to 2,5 Design features: ¢ Nominal dimensions DN: 25 (1”); 50 (2”); 80 (3”); 100 (4”); 150 (6”); 200 (8”); 250 (10”); 300 (12”). ¢ Flanged connections: Class 150-300-600 RF or RTJ, according to ANSI B16.5 and PN 16/40 according to EN 1092, ISO 7005. Materials:** ¢ Body: Cast steel ASTM A 352 LCC for classes ANSI 600 and 300; Cast steel ASTM A 216 WCB for classes Ansi 150 and PN 16/40. ¢ Head covers: ASTM A 350 LF2 forged steel ¢ Stem: AISI 416 stainless steel ¢ Plug: ASTM A 350 LF2 Nikel coated on sealing surface ¢ Seat: Nitril Rubber Vulcanized on a metal support ¢ Diaphragm: Rubberized canvas (performed by hot-pressing process.). ¢ Sealing ring: Nitril rubber ¢ Connection fittings: In zinc-plated carbon steel according to DIN 2353; Stainless steel on request.