To replace solvent lines, follow the sequence of steps for the solvent line that you want to replace.

The flow path determines the pump inlet (component at which the solvent enters the pump) and the solvent flow through the pump.

Pump Type

Pump Inlet

Binary pump

The pump inlets are the solvent selectors.

Isocratic pump

The pump inlet is the pump head.

Quaternary pump,
dual pump

The pump inlet is the vacuum degasser.

For the pump-specific operating principles that illustrate the solvent flow through the pump, see Pump-Specific Information.