4 to 1 Splitter

I started working on a hot end cooler that utilizes an air pump for aquariums. The particular model of pump that I am using has 4 outputs and variable strength. Instead of having one on full blast making the motor the loudest it can go to pump one outlet hard enough to cool the plastic coming out of the hot end and wasting the output of three other valves, I decided to create an adapter to take all four and connect them to one line. You could use it to combine four into one, split one into four,