1′ THREAD RELIEF VALVE 0,23 BAR , BASIC NAME RELIEF VALVE MODIFIER NAME RELIEVING TYPE AUTO OPERATED AUXILIARY ACTUATION WITHOUT AUXILIARY ACTUATION MATERIAL ALUMINUM BODY MATERIAL ALUMINUM BONNET MATERIAL INTERNAL NITRILE RUBBER (NBR) THREAD CONNECTION TYPE BSP ISO 7-1(ABNT NBR 6414) SEAT CAST ALUMINUM CONSTRUCTION DIN EN 12186/12279 INPUT CONNECTION DIAMETER 1′ OUTPUT CONNECTION DIAMETER 1′ OPENING PRESSURE 0, 23 BAR MAXIMUM OPERATING TEMPERATURE 60 DEGREES CELSIUS ADDITIONAL REQUIREMENTS SEE NOTE TRADE REFERENCE PIETRO FIORENTINI-VEGRIB00 NOTE – PARTIAL RELIEF VALVE FOR NATURAL GAS; – MODEL VS/AM 65 STANDARD – MP (MEDIUM PRESSURE); – SPRING RANGE = 0.150 TO 0.300 BAR; – SPRING RANGE CODE: 644. 70135; – CERTIFICATE: CE.