BUTTERFLY VALVE; NOMINAL SIZE: 18”; PRESSURE: CLASS 150; FLUIDS: INDUSTRIAL WATER; ASSEMBLY TYPE: FLANGED RF ACCORDING AN SI B16. 5; DISK MATERIAL: STAINLESS STEEL; BODY MATERIAL: CAST IRON; ACTUATION TYPE: PNEUMATIC ATTUATORE; SEAT MATERIAL: EPDM; EBRO ARMATUREN BUTTERFLY VALVE; MODEL Z011-A; DIAMETER (SEE BELOW); BODY: IN NODULAR IRON DIN GGG 40; DISK: AISI 316 STAINLESS STEEL; STEM: AISI 410 STAINLESS STEEL; SEAT: EPDM; PNEUMATIC ACTUATOR TYPE SOCOTCH- YOKE OF SIMPLE ACTION EB-280 EW ( AIR OPENS / SPRINGS CLOSE) MAINTENANCE FREE, WITH 24 VDC SOLENOID VALVE, MONOSTABLE, NAMUR CONNECTION 1/4 BSP, 3/2 WAYS; CLASS: ANSI B16-104 CLASS VI (100% TIGHT); HOLE FOR ASSEMBLY BETWEEN FLANGES ANSI 150#. OPERATING PRESSURE UP TO 10 BAR