Thermo Scientific Dionex, Operator'S Manual

Page: 74 / 228

Dionex Integral Systems Operator’s Manual
62
Doc. 065250-06 03/2020
selection valves. Sample stream outlet lines connect to outlet ports on the valves
and then exit the SS through the side fittings. Refer to the label inside the SS door
to identify each stream inlet and outlet line.
One sample stream at a time is selected for analysis. Flow from the selected
stream is diverted to the common sample outlet line, which is connected to the
center port on valve A (see
Figure 4-2 ). After exiting the SS, the common sample
outlet line connects to the CS valve on the SP (see Figure 3-11 for the SP1 flow
path; see Figure 3-14 for the SP2 flow path). If a stream from valve B or C is
selected, the selected stream is cascaded to the common sample outlet line on
valve A.
Streams that are not selected flow continuously out of the valves and exit the SS.
Continuously flowing streams can be directed to waste or returned to the process.
The continuous flow ensures that all samples are fresh when selected and that a
representative sample is delivered to the analyzer.
NOTE If continuous flow is not required, you can plug the
outlet ports on the stream selection valves with 1/4-28
fittings, provided that the incoming sample pressure
does not exceed 0.34 MPa (50 psi).
Figure 4-2. SS Stream Selection Valve A: Stream 1 Selected
Selected sample stream
Valve A
2
3
4 5 6
7
8
S01
S02
S03
S04
S05
S06
S07
Plug
1
From Valve B (if installed)
(S01) out to SP