Bulk Handling Global        
    Bulk solids and powder flow properties testing, silo and hopper design, discharge and conveyor technology      
  Solutions for storage and flow of solids . . . . It's all about flow  
  Hopper valley angle calculation  
  Internal angle Wall "A" to vertical α1 Degrees  
  Internal angle Wall "B" to vertical α2 Degrees  
  Note - Type in respective value inside of coloured cell above, then click outside cell to enter.  
      Internal Valley angle to vertical α3 = Degrees      
      External angle to horizontal α4 = Degrees