if you got two pre drilled holes, use a gate valve, big difference over a ball valve while trying to tune it. Its very had to tune with a ball valve because its not as "incremental" as a gate valve.
if you have 3 pre drilled holes setup as a herbie with a durso (beanimal style) then you can use ball valve because it will autotune itself.
always use unions, it makes tweaking so much easier and its more pro. But only use them where you think you need them. I have one right after my 90s from the holes so if i ever needed to remove the gate valves or ball valves i can easy. I also have two on my return line and ive taken that one apart a few times now.
for your return, you could use a gate valve but a ball valve works as good. You dont need to be super prercise on the return.
|