We have three tank set-ups on our various vehicles and all of the tank are isolated and connected to the pumps via a pro end shut-off as below:

These can be supplied in a 1/2" barb version that fits onto the 1/2" hose coming out from the tank. A 1/2" male connector then fits to the pump side hose as shown below:

This not only allows for leak free isolation of the tank and removal ability, but also allows us to 'hot-swap' pumps and outlets in moments.