Gas pressure regulator Norval

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DIRECT-ACTING GAS PRESSURE REGULATORS Norval Norval pressure regulators are direct-acting devices for low and medium pressure applications controlled by a diaphragm and counter spring. These regulators are suitable for use with pre-filtered, non-corrosive gases. The NORVAL is a downstream pressure regulator, self actuated, spring loaded for medium and low pressure applications. It is suitable for gaseous, non-corrosive, previously filtered fluids. It is characterized by a quick response to varying operating conditions, which make it particularly suitable for use when serving ON-OFF burners and in any industrial process characterized by a quick change of the flow rate. ¢ Maximum inlet pressure up to: 19,6 bar for regulators from DN 25 (1”) to DN 80 (3”) 8 bar for regulators from DN 100 (4”) to DN 200 (8”) ¢ Range of downstream pressure: from 8 to 4.400 mbar for regulators from DN 25 (1”) to DN 100 (4”) from 12 to 1.800 mbar for regulators DN 150 (6”) and DN 200 (8”) ¢ Minimum ambient temperature: Execution up to -40°C (to specify in the request ). ¢ Maximum ambient temperature: +60°C ¢ Inlet gas temperature: up to -20°C + 60°C ¢ Accuracy class AC: up to 5 ¢ Look-up pressure class SG: up to 10 Design features: ¢ Nominal dimensions DN: 25 (1”); 40 (1”1/2); 50 (2”); 65 (2”1/2); 80 (3”); 100 (4”); 150 (6”); 200 (8”). ¢ Flanged connections: UNI PN 16; class 150 RF Materials: ** ¢ Body: Cast steel ASTM A 216 WCB (all DN). Spheroidal ductile iron GS 400 – 18 ISO 1083 DN 150 (6”) included. ¢ Covers: Diameter from 375 to 630 Drop-forged carbon steel / from 658 to 817 Alluminium ¢ Diaphragm: Rubberized canvas (performed by hot-pressing process).