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10-port Gas Sampling Valves & 22-port Stream Selector Valves - SRI Instruments
A single 10-port valve can be plumbed to inject the same sample
onto two separate loops. This is especially useful when two different
carrier gas types are used, or when the detectors employed have
very different sensitivities and need different sample sizes injected.
The 10-port valve configuration shown at right is our Multiple Gas
Analyzer #1 (MG#1) valve. In the LOAD position, the sample loop is
filled with fresh sample gas, and the Silica Gel column is
downstream of the MoleSieve column. When the valve is rotated
into the INJECT position (shown), the contents of the loop are
flushed into the Silica Gel column, which is now upstream. The
lightest analytes blow through onto the MoleSieve column for
separation. The valve is then rotated back to the LOAD position, just
prior to the elution of ethane, for the separation of C
2
-C
6
.
8690-0063 10-port Manually actuated valve, plumbed & tested*
$
1,229.00
8690-0065 10-port Electrically actuated valve, plumbed & tested*
$
2,059.00
8690-0077 Automated 22-port, 10-stream selection valve, stand-alone,
plumbed & tested
$
4,629.00
8690-0088 Thermostatted valve oven, mounted on an 8610C GC
$ 819.00
*any valve ordered without a thermostatted (heated) valve oven
must be installed in an unheated valve oven, additional charge:
$ 299.00
10 Port Gas Sampling Valves & 22 Port Stream Selector Valves
65-66
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