Pump Head (Liquid Displacement Assembly) - Thermo Scientific Dionex UltiMate 3000 Series Operating Instructions Manual

2.10 Pump Head (Liquid Displacement Assembly)

The pump head contains two displacement chambers, one inlet and one outlet check valve,
a purge unit with the pump outlet and a purge valve knob, a static mixer, and two sapphire
pistons and their seals.
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No. Description
1 Compression lid
2 Purge unit with purge valve knob
3 Displacement chambers
4 Pump head main body
5 4-channel proportioning valve
6 Piston drive unit
7 Piston retaining spring
8 Piston
9 Pump outlet
10 Rear seal wash tubing connecting the guide bushings
Operating Instructions
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Fig. 8: Pump head and proportioning valve
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UltiMate 3000 Series:
LPG-3400XRS Pump
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