Follow these instructions to replace the non-return valve in PR53GP refractometer.
Installing non-return valve to PR53GP wash connection.
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Familiarize yourself with the safety instructions of the installation site.
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Make sure the process line is depressurized and empty.
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Remove the old non‑return valve.
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Clean the threads with a brush to remove any remaining PTFE‑tape.
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Add 2-3 rounds of PTFE‑tape to the threads of the new non‑return valve.
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Install the non‑return valve. Make sure you install it according to the flow direction.
Tighten using a 9/16 in wrench.
| CAUTION Be careful not to over-tighten. |
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Make sure there is no leaking after restarting the process. Tighten connection if
needed.
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Keep the material certificates delivered with the spare part for later use.
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Recycle removed parts according to the recycling instructions in PR53 Series
User Guide (M212898EN).