[RCP57]

I'm running 5/32 and 1/8 air fittings and hose on my models. I bought the parts at a local hydraulic shop. Standard thread and hose won't work with any of the valves, cylinders or pumps you can buy but if you build your own it's not a problem. I can't remember if you planned to make or buy the hydraulics? The air line I'm using has a burst strength of around 1200psi. I am running over 400psi in my excavator and have never blown a hose.