PRESSURE OPERATED ASCO VALVE SERIES 290 VALVE 2/2 NC ALL AISI 316 L STAINLESS STEEL ENTRY UNDER DISC G.3/4 D=20 OPERATOR D=50 PILOT PRESSURE 4 BAR Option666046 ( VISUAL POSITION INDICATOR FOR 290 VALVE VISUAL POSITION INDICATOR FOR OPERATOR D=50 (VI) TPL 20815 = SEAL ON SCRAPER IN PTFE VALVE 290-390)