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SAFETY VALVE BRAND "AERRE", MODEL 2800 2"J3" 150 (RF)X150(RF) CODE: 2842J1R1RAM1014 BODY: A-216-WCB BONNET: A-216-WCB SPRING: AC.CARBON DISC: AISI-316 NOZZLE: AISI-316 REST OF INTERNAL: AISI-316 FLUID: NATURAL GAS. DISCHARGE TEMPERATURE: AMBIENT. OPENING PRESSURE: 4.50 KG/CM2G. BACK PRESSURE: ATMOSPHERIC. ALLOWABLE OVERPRESSURE: 10 %. WITH CALIBRATION CERTIFICATE SIGNED BY A PROFESSIONAL REGISTERED IN OPDS