Here we go... The baby is born and it works well in function tests. Seals really well and is very smooth in operation. Size comparison to other versions and the solenoid and control box setup.. The shape of the square hole (visible in the one function picture) could be modified to change the opening characteristics. Just have to affix a hose nipple and will try to get this tested. In design it should flow the same amount (or more) as the first version.