[KYburBN]

yup. 3/8 line all around. you could run 1/2 if you want but the 3/8 is more than sufficient. i can make a video give me a day or so and i will post it..

one other thing good about these valves is all the guage ports are made into the block so you dont have alot of t's or crazy fittings to install to read bag and tank pressure.

makes for very clean install and super easy to diagnose an issue if one occurs.
5 lines and your system is up and running.

if you dont use guages just remember to plug the 1/8 ports for the guages. lol