... nickel finish, chrome finish4, Working temperature -20oC to 110oC5, Working medium Water, gas, non-corrosive liquid6 ... , Handle Steel handle7, Thread ISO228 ( equivalent to DIN259 and BS2779) or NPT8, Certificate CE, ISO9001 ... valve handle must be strong enough to withstand a torque of 15kgm.4.Opening and closing ... be hexagonal or octagonal in shape to allow a safe tool grip during the fastening ...