The Low Pressure Mixing Pumps are 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 600 bar.
In the quaternary pumps, degassing of the solvents is done in a built-in vacuum degasser. Solvent compositions are generated on the low-pressure side by an MCGV/4CGV.
The pump assembly includes a pump head with an 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.
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