Thanks for the link, everything is clear now... well almost...
With the normal electric valve, the accumulator will hold 1.5qt (granted that it's the 1.5qt one) regardless the preassure? or will the amount of oil held in the accumulator will vary accordingly to the preassure in the system?
I ask this because I don't know if I should get the normal electric valve or the EPC one with the preassure sensor, which if I understand correctly will release the oil only when the preasure drops beyond the specified value (20psi in this case) but, the preasure in the accumulator will be higher, around 50psi.
Am I correct?
Thanks again!