Nothing needs to be done to the needle valve when removing and installing. Only the working pressure needs to be set at 0psi prior to removal and installation.
Hello, if you are referring to the question from W Welsh regarding the needle valve, please look to find the answer directly above the question. There are currently no unanswered questions for this post. please let us know if you have a question we can assist with. – GLA
GLA Planted Tank Blog 
Do I need to do anything with the needle valve when removing / reinstalling the regulator?
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Nothing needs to be done to the needle valve when removing and installing. Only the working pressure needs to be set at 0psi prior to removal and installation.
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Why is there no answer to this thread
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Hello, if you are referring to the question from W Welsh regarding the needle valve, please look to find the answer directly above the question. There are currently no unanswered questions for this post. please let us know if you have a question we can assist with. – GLA
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