The high-pressure pump is typically a two-stage centrifugal pump, but may be a two-stage rotary pump.

The high-pressure pump is typically a single-cylinder reciprocating pump, but may be a single-stage centrifugal pump.

The high-pressure pump is typically a multiple-cylinder reciprocating pump, but may be a multi-stage centrifugal pump.

The high-pressure pump is typically a two-stage rotary pump, but may be a two-stage centrifugal pump.