Reciprocating Pumps Pulsation Signature

Reciprocating pumps emit strong pulsation when there is no pulsation countermeasure. Reducing pulsation saves not only pump wear but also piping fatigue life. Reciprocating pumps use a reciprocating piston to displace fluid volume. Inlet flow is controlled by a passive valve, i.e. a springloaded valve that opens when the piston expands the cylinder’s volume (see Figure 1). The discharge valve is closed during the suction stroke. The discharge valve is opened when the piston decreases the cylinder’s volume.The suction valve is closed during this compression stroke. (A) (B) Figure 1. A) The...