AZURA® V 4.1 Valve, 8Port 2Pos w/o drive, 1200 bar, 1/16" 10-32 UNF, 0.3 mm bore, SST-DLC/Vespel

This valve is used in combination with the VU 4.1 valve unifier.

The stator of this injection valve is made of stainless steel with a DLC coating (diamond-like carbon). In combination with a Vespel rotor seal the valve offers high durability and a pressure resistance of up to 1200 bar.

The valve is for analytical applications and has 8 ports.

This configuration allows high-throughput analysis as sample loading and injection are parallized. In position 1, the sample is loaded to sample loop B, while sample from loop A is injected. In position 2, the sample of sample loop B is injected onto the column. In parallel, sample can be loaded again into loop A.

A second application is reducing analysis time for samples with late-eluting compounds, which are not relevant for sample analysis. In position 1, the sample is injected onto the column. After relevant compounds were separated and detected, the valve is switched to position 2. Undesired, strongly retarded compounds are backflushed and removed to prepare the column for the next separation. Also, in

this position the sample loop is loaded.