Systems and methods for repairing fluid handling equipment

A method comprising:

• removing a worn portion of a first end face of a rotor of a rotary isobaric pressure exchanger (IPX), wherein the rotary IPX is configured to exchange pressures between a first fluid and a second fluid, wherein the rotor is configured to rotate within a cylindrical body portion of the rotary IPX and about a longitudinal axis disposed along a center of the rotor, wherein the rotor comprises a plurality of channels disposed between the first end face of the rotor and a second end face of the rotor;
• and
• coupling a first end face of a rotor replacement piece of the rotary IPX to the first end face of the rotor to replace the worn portion, wherein the rotor replacement piece forms a first plurality of apertures configured to align with a plurality of channels of the rotor to receive the first fluid or the second fluid.

A method comprising:

• removing a worn portion of a first end face of an end plate of a rotary isobaric pressure exchanger (IPX);
• and
• coupling a first end face of an end plate replacement piece of the rotary IPX to a first end face of the end plate to replace the worn portion, wherein the end plate forms a first plurality of apertures configured to align with a second plurality of apertures of the end plate replacement piece, wherein a manifold of the rotary IPX is coupled to and extends over a second end face of the end plate, wherein the manifold comprises a fluid chamber, an inlet port, and an outlet port configured to transfer one of a first fluid or a second fluid.