Definitions for "Total Dynamic Head"
Keywords:  suction, tdh, head, discharge, dynamic
The sum of the dynamic suction head and the dynamic discharge head. Also referred to as Total Head.
The difference between a pump's discharge pressure and suction pressure, expressed in terms of feet of the pumped fluid is called TDH. Sometimes shortened to the term, "differential head".
Identical to Total Head. This term is no longer used and has been replaced by the shorter Total Head.
Keywords:  circulation, spa, resistance, sum, pool
The sum of all resistances in an operating circulation system.
The sum of all the resistance in a pool and spa circulation system during operation.