Grace Catalog 2008

analytical hplc
Rheodyne ® Manual Switching Valves
• Inexpensive manual switching valve
• Wide-bore version for prep
Manual Switching Valve Applications
2-Position 6-Port:
Two Column Selection
2-Position 6-Port:
Pre-Column Backflushing
Injector
Injector
hplc accessories | valves
Rheodyne ® HPLC Switching Valves offer an endless variety of
ways to simplify switching and injecting. Standard valves are
supplied with 0.024" internal flow passages and are suitable
for use with analytical and semi-preparative applications.
Large bore valves with 0.040" internal flow passages are
available for use at high flow rates (greater than 50mL/min)
7000psig pressure limit.
A spring detent mechanism included in the 6-position
selection valve permits full circle rotation in either direction
and ensures that the rotor “falls into” each of the six positions
at the precise 60° spacing.
*5000psig pressure rating for 2-position 6-port and 10-port.
5619
6
1
5 4
Detector
2
3
0798
Off line column is sealed. Flow
continues on line.
3-Way Valve:
Column Programming
Analytical Column
6
1
2
5 4
3
Detector
Pre Column
0801
Flow continues through column.
Only pre-column is backflushed.
4-Way Valve:
Column Backflushing
Rheodyne ® Manual Switching Valves
Description Version Bore Part No.
2-Position Valves
6-Port SS Standard 7000RV
6-Port SS Large Bore 7000L
3-Way SS Standard 7030RV
3-Way SS Large Bore 7030L
4-Way SS Standard 7040RV
Multi-Position Valves
6-Position 6-Port SS Standard 7060RV
Column B
Column A
6
1
2
5 4
Detector
3
Injector
Column C
6
1
2
5 4
Detector
3
Injector
0802
0800
related products
Need fittings for valves? See page 141.
Part of sample is analyzed on
columns A-B, the other part on
columns A-C.
Flow is backflushed to direct
peak of interest to detector.
6-Position 6-Port Valve:
Tandem Five Column Selection
Detector
5
4
6
3
1
2
5
4
6
3
1
2
Injector
Bypass Flush-Out Line
Selects between five columns. Use the sixth port for a bypass/flush
out line. Two 7060s are required.
0799
138 www.discoverysciences.com