Flow Behavior of Reciprocating Positive Displacement Machines

Flow Behavior of Reciprocating Positive Displacement Machines 

The gradient of the compression curve (dp/d V) depends on the total fluid volume and its compressibility, which is contained in the operating chamber. Compared to 

especially with big flows, multiple pumps connected in parallel (N machine units) are used to reduce the pulsation. The kinematics of each machine thereby act with a phase shift of 360°/N to the neighboring machine. But nevertheless a remaining pulsation will occur. 

---