Hey firebrick
The left valve is an auto cycle with power beyond. The silver fittings between the valves are high pressure jic 12 male to female to make a union. Each valve has a return to tank that will go into the manifold. Also there will be a dump valve to the manifold. The dump will bypass about 50% of the fluid from going thru the auto cycle valve taking it directly to the manifold. This will speed up cycle time, save wear on valve, and reduce heat. From the manifold fluid will go thru filter and back into tank.