Page "Pump" Paragraph 66

Triplex plunger pumps use three plungers that reduce pulsation-unlike a single reciprocating plunger.

With the addition of a pulsation dampener on the pump outlet the " pump ripple ", or ripple graph of a pump transducer, can be smoothed reducing further the pulsation of the triplex plunger pump.

Because of the dynamic relationship of the high-pressure fluid and plunger, high-quality plunger seals are generally required.