coptic120
+1y
Everything 1/2". The valves just have 1/2" and 1/4". So its still 1/2" line and ports, just with a 1/4" up/dump too.
I would say get 3/8 or 1/2" then just use a reducer on the dump to air it out slower. You could even get a flow control for airing up too. If you went with all 1/4" i guarantee after a while you will want it to be quicker.