Overview Of The Hydraulic Path - Agilent Technologies 1260 Infinity VL User Manual

Overview of the Hydraulic Path

The quaternary pump is based on a two-channel, dual-piston in-series design
which comprises all essential functions that a solvent delivery system has to
fulfill. Metering of solvent and delivery to the high-pressure side are
performed by one pump assembly which can generate pressure up to 400 bar.
Degassing of the solvents is done in a built-in vacuum degasser. Solvent
compositions are generated on the low-pressure side by a multi-channel
gradient valve (MCGV), which is a high-speed proportioning valve.
The pump assembly includes a pump head with a passive inlet valve and an
outlet valve. A damping unit is connected between the two piston chambers. A
purge valve including a PTFE frit is fitted at the pump outlet for convenient
priming of the pump head.
An optional seal wash function is available for applications using
concentrated buffers as solvents.
1260 Infinity QuatPump VL User Manual
Introduction
Overview of the Hydraulic Path
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