Dog leg???...WTF?

When I had cans on my Integra I had a Gate (ball) valve at the tank, I would lift the car, dump the right rear, and then get out and turn the gate valve, and walla badda boom o bang dog leg, or you can run a electric valve that worx easier, Im a cheap ass though, You can even use a 1/4" smc valve it will work, you dont need a 1/2" or anything crazy like that

youll need to wire the four valves for that corner so that they open together. for instance, when you fill with the normal valve, the dogleg dump valve needs to open to allow air to come out of that side of the cylinder. but when you dump the normal valve, the dogleg dump valve will just open by itself from the backpressure..same goes for the dogleg fill valve. spool valves hold backpressure so thats why they will work better in an instance like RHMNISSAN said.