Quote:
Originally Posted by JB3
I have that exact valve and has some leakage issues, it was not completely airtight. Just an fyi, could have been my specific valve, but just in case theres a problem on the install. I recommend testing with a vac pump before installing
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I have found that some pressure valves don't work perfectly with vacuum and you end up having to swap possibly the exhaust port for the vacuum source port, etc...
As you say, definitely pull a vacuum on all the ports to get a feel for the effectiveness of the valve.