What are the issues with two reciprocating pumps in series? Can anyone provide any references?
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I have never seen two recip pumps in a row.
That seems like not a good idea for and hydrocarbon or near-vapor pressure fluid. The surge and pulsation at the discharge of the first pump could cause cavitation at the suction of the second pump. If they insist, I would definitely use as much pulsation dampening, or snubbing as possible between the stages.