DIAPHRAGM VALVE; NOMINAL SIZE: 2"; MOUNTING TYPE: FLANGE ENDS; FLUIDS: ACID WATER; OPERATING TYPE: WITH PNEUMATIC ACTUATOR; BODY TYPE: WEIR; BODY MATERIAL: DUCTILE IRON; DIAPHRAGM MATERIAL: EPDM OR PTFE; C DUCTILE IRON ASTM A395 BODIES FLANGED INTERNALLY COATED WITH POLYPROPYLENE (25-1), OR TEFZEL (26-1) WITH 1-PC EPDM (E) OR PTFE (T) DIAPHRAGMS, WITH CENTURY PNEUMATIC ACTUATORS TYPES H (NORMALLY OPEN), OR HRT (NORMALLY CLOSED) OF VARIOUS SIZES (SIZE 0, 1, 2A, 3 AND 4) AS PER ORIGINAL SPECIFICATION