I often get quotes for positive displacement blower packages for jobs of mine. In every quote is an adder for an outside air connection. This is for the blower inlet. When is this needed? I can't seem to find anything in the vendor literature. When would you not want it?
Thank-you.
I am working on a water filtration plant that using pumps to vacuum filtered/clean water from a tank and then transfer it to a clearwell. I'm not sure if I should be using an air release valve or a vacuum breaker valve. Here's the setup.
The pump vacuums water (elevation not important as I have...
