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Servicing
Sample/Ref Valve and Ext/Int Valve Replacement
Thermo Scientific
146iQ Instruction Manual
7-57
6.
Pull sample/reference valve upwards away from bracket.
7.
Unfasten external/internal valve from fitting.
8.
Replace desired valve with same fitting orientation related to the
markings on the valve (COM, NC, NO). Reassemble in reverse order.
Note
All National Pipe Thread fittings require PTFE tape for sealing.
Remove the existing PTFE tape and apply new. Wrap PTFE tape in the
same direction of the thread spiral. Wrap around approximate two times
around depending on the thickness of the PTFE tape. Make sure PTFE
tape does not overhang the first thread (the lead in thread).
▲
Figure 7–64.
Sample/Ref Valve and Ext/Int Valve Replacement
Summary of Contents for 146iQ
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