PRESSURE OPERATED ASCO VALVE SERIES 290 VALVE 2/2 NO STAINLESS STEEL ENTRY UNDER DISC G.3/4 D=20 OPERATOR D=63 + CERTIFICATION 1935-2004/CE + SM2 ( SIGNALLING BOX MOUNTED ON BRONZE AND STAINLESS STEEL VALVE 2 MECHANICAL SWITCHES (SM2) ) + ( LENGTHENING STEM FOR SIGNALLING BOX MOUNTED ON VALVE MECHANICAL SWITCH 390 DN 15-25 AND 290 DN 15-20 D=63 AND 90 )