I wanted to start by saying I know using the schrader valve to check the air pressure with water in the tank would be inaccurate. That's not what I did. So I wanted to lower my water pressure from 40/60 (water gauge said 42/64) to 30/50 (by removing 10 psi so actually my plan was 32/54). I did not trust the gauge I had to measure air in the tank, but I do trust my water gauge and the current charge that was in the tank. What I did was I used the water gauge instead by first shutting water off to the house using the shutoff, then I let air out of the schrader valve until the water gauge read 10 psi less. I then adjusted the the pressure switch so the cut in pressure would be 10 psi less than it was, so 32 psi, my end result is 32/52, cut off pressure was 2 psi different than I was expecting it to be somehow but whatever. So I guess the real question is what the title is... Is the air pressure in the holding tank going to be the same as the water pressure? Or is there somehow a difference making this method for adjusting air inaccurate? I don't think the pressures would be any different, but I got to thinking about it and maybe they are somehow. Thanks.

Hi, I recently installed a Zoeller105 sump pump to be used in a basement laundry area. I have it connected directly to the washing machine discharge line, (the typical standpipe and ptrap. I was told this was ok to do.) The problem I'm having is that water overflows thru the vent pipe sometimes, which is 17 inches long. Nothing else is connected to the pump. The questions I have are: 1. What is the correct length for the vent pipe. 2. Should the ball valve be open all the way. 3. Is my setup correct or do I need to install and laundry sink and connect the pump to the sink? Thank you for your help, Henry