... finish, nickel finish, chrome finish4, Working temperature -20oC to 110oC5, Working medium Water, gas, non-corrosive liquid6 ... Ball valve handle must be strong enough to withstand a torque of 15kgm.4.Opening and closing of ... the valve must be achieved through a 90 degree ... must be hexagonal or octagonal in shape to allow a safe tool grip during the fastening of ...