tender for servicing of hpbp valves and actuators 250 mw,u 8.-1 servicing of hpbp valves and actuators(250 mw),u#8. 2 service charge for service engineer for checking and servicing of hp bypass valves, actuators and hydraulic system. 3 travelling charge for service engineer (to & fro) for hpbp system valves, actuators. 4 charge towards seat cutting with seat cutting machine & seat replacement assistance for one spray valve, e32s . 5 charges towards seat cutting with seat cutting machine & seal replacement assistance for additional spray valve, e32s 6 charges towards seat cutting with seat cutting machine & seat replacement assistance for hpbp main valve, ars-100 7 charges towards seat cutting with seat cutting machine & seat replacement assistance for additional hpbp main valve, ars-100.