7777I BMC CAST IRON WAFER TYPE BUTTERFLY VALVES
PN 16, -10 TO 135 DEG C MAX
1) Seal material NBR or EPDM P standard disc differentialpressure
2) The torque valves shown on above charts are for wet (water and other non-lubricating media )and dry ( non-lubricating, dry, gas media) For Torques involving other media please consult the fractory.
3) there is no saftey factor included in the numbers shown on the charts, for actual sizing VIZA recomends that these valves be multiplied by 1.2 for single valve applications
4) For PIPE seats multiply the numbers shown by 2.0