Instrumentation Valves014 - page 45

valcovalves
www.vici.com | Valco InstrumentsCo. Inc. Sales: 800–367–8424 Fax: 713–688–8106 | 137
4
3
2
1
6
5
TOCOLUMN
CARRIER
IN-LINE
FILTER
6port
valve
VENT
4position
STvalve
PROCESSSTREAM LOOP1
LOOP3
LOOP2 LOOP4
4
3
2
1
6
5
TOCOLUMN
CARRIER
IN-LINE
FILTER
VENT
PROCESSSTREAM LOOP1
LOOP3
LOOP2 LOOP4
more information
STprices
Lowpressure . 128-129
Highpressure . . . 133
Application
HighpressureST . .139
techtip
Because themost
commoncauseof valve
failure is strayparticulates
entering thevalve,we
strongly recommend the
useof in-linefiltersat
sampleentrypoints.
OurZUFRfilters feature
inexpensiveandeasily
replaceable lowpressure
dropfilter screens (2or
10micron). Thefilters
areavailable in1/16",
1/8",and1/4" standard,
reducing,andbulkhead
versions.
Filters . . . . . . page52
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sampletrappingapplications
for4to16streams
ST selectorsareused formulti-
column,multi-sample,ormulti-trap
operations. TheSTconfiguration is
available inbothMWandUW type
designs.
A typical application,shownhere,
is thecollectionof fractionsat
timed intervals for analysisat a later
time. Valves canbeorderedwith
matched loopsalready installed.
In thisexample, the6port valve
shown isused to selectbetween
collection/trappingand
analysis/desorption. Bothvalves
canbe suppliedwithpneumaticor
electricactuators toautomate these
functions.
STflowpath— lowpressure
SelectorApplications
CHROMalyticTECHnologyPtyLtdAUSTRALIANDistributors e-mail:sales@chromtech.net.auTel: 039762 2034