[rsman]

1.) If you have 2 coils how do you adjust them both becuase you would have one output you couldnt really adjust one from the other. 2 ways , put the adjusting valve before the coils or put the adjusting valve on the output, with option 1 you can adjust each individually which is only a little better on a small coil, option two which works ok means one of the coils might not cycle at the same pace which could extend cycle time .... maybee.

2.) If you have 2 coils do they BOTH get set at like 1 drop per sec so the putput is 2 drops per sec? with 2 adjusting valves you would adjust just like with one coil, with 2 valves its a good idea to be able to either pinch off or on a large systm close an additional on/off valve that would allow you to set the timing for 1 coil at a time. with 1 adjusting valve you just add the flow rates and assume the 2 are equal, or pinch off one input to set 1 coil, then set the 2nd by adding to the flow rate of the 1st,

now when reality comes in... you wont be running your coil anywhere near 100%, and you will only need to adjust the flow rate while its cycling so as long as its consistant it all good.