supply of ball and butterfly valve for cpu system , supply of ball and butterfly valve for cpu system as per details given at nit annexure-i and ia , ball valve : pneumatically actuator operated , size 1 / 2 “ball valve , seat-ptfe, class-300, discharge pressure at a design capacity of cep: 3.14 mpa, temperature:55c, service condition : dm water , ball valve : pnematically actuator operated size 1.5 “ball valve, seat-ptfe, class-300 discharge pressure at design capacity of cep: 3.14 mpa, temperature:55c, service condition: dm water , actuator double acting ( air to air ) wp 830 kpa, air supply pr. 10 bar , butterfly valve : pneumatically operated type: wafer body: carbon steel wcb, disc-316 ss, seat: rtfe, pressure rating class-300, size:10” service condition: valves are to be installed / used in cpu ( condensate polishing unit ) system for treating condensate water in thermal power plant ( operating pressure & temperature: 30 kg / cm2. 55 deg c )