Thread: Access to Secondary Injection Check Valve
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Old 01-02-2019, 05:38 PM   #3
ProfRand
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Join Date: Jan 2019
Location: Boston area
Posts: 3
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There is a small one-way vacuum valve that I've bought from Pelican.
It's number 7 in the diagram of the system in my Bentley manual.
See photo
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