ASCO PRESSURE OPERATED VALVE 298 SERIES ASCO VALVE 298 2/2NC STAINLESS STEEL BODY DIN FLANGES PN40 DN50 OPERATOR D=200 Option 612107 ( ACCESSORY AND SPARE PART FOR ASCO VALVE 298 AND 398 ATEX CATEGORY 2 FOR VALVE 298-398 SUFFIX GD2 FOR 298 AND 398 VALVE DN15-25-32-40-50 ) OPTION 666340 ( ACCESSORY AND SPARE PART FOR ASCO VALVE 298 AND 398 SIGNALLING BOX MOUNTED ON VALVE 298-398 PILOTING GAS 2 INTRINSICAL SAFETY SWITCHES*DN20-25 OPER.200 (SH2) ) WITH 3.1 MATERIAL CERTIFICATE (CHEMICAL ANALYSE) ON THE BODY