Basically, is the Pixie water control valve one way, or can it shut off/turn on with pressure from either side?  In order to install it so the button faces up, I need to install it so the water comes in what is labeled as the "Outlet" side.  I don't know if it's labeled "Outlet" because it is a male connection, or because it cares about the direction of the water.  Otherwise, I will need to buy a male/male and female/female adapter, flip it "upside down" and use it with the button facing down.

Thanks.