I just have Hose clips on the pipes that carry water the co2 one does not need them. As for one way valves I have two installed either side of the bubble counter, Steer clear of the glass valves not only do they not work very well that also make a hell of a racket when theres gas going throught!
I use two plastic ones i bought from my lfs. Like these but in black: Click me Work well and no audible noise!
I use two plastic ones i bought from my lfs. Like these but in black: Click me Work well and no audible noise!