Hi guys I was doing a few tests on my n75 valve as im suspecting it to me faulty. If I blow down the two shorter pipes I can blow through them and nothing come out of the longer pipe. If I add 12v to the electrical plug then you can hear it click open and the air can flow through all the pipes. Here an example: With no power: With 12v power: Is this normal as I would have thought that with power added to it it would open the longer pipe and shut off one of the shorter ones? .