BUTTERFLY VALVE 4”, DISC AND LINER IN UHMWPE, WORKING TEMPERATURE -40 TO 80 C, NOMINAL WORKING PRESSURE 16BAR, VACUUM UP TO 1 MBAR, QUENCH UP TO 1 MBAR., NOMINAL WORKING PRESSURE 16BAR, VACUUM UP TO 1 M BAR, COMPLIES WITH SIL2 AND SIL 3 STANDARDS, COMPLIES WITH TA-LUFT STANDARD, SELF-CENTRING DISC, ONE-PIECE SHAFT,, SELF-LUBRICATING SHAFT BUSHING GUARANTEED BY GLASS, SPARK TESTED TO A35000, A35000V SPARK TESTED TO ENSURE DENSITY AND THICKNESS. INCLUDES GARLOCK ACTUATOR, SINGLE-ACTING, SCOTCH-YOKE SYSTEM, WORKING PRESSURE, 6BAR, WORKING TEMPERATURE -20 C TO 80 C, FLANGE ANSI 5211 AND WITH BRIDGE, BOLTS AND SHAFT, IN SS316, MODEL GARSEAL 122W