So after a bit more trial and error I have come up with a SILENT solution. I took and drilled a 23/64 hole in the top of my 1" cap. (top of standpipe) Then stuffed a 3/8" clear plastic tube in about 5/16" in the cap.(Total length is about 5"). Then on top of all this is a 3/8" TUBE X MIP valve. You can adjust the valve to regulate how much suction you get, in order to get the perfect flow WITHOUT the flushing effect. Here is a picture of the final product.
DB
