I have two Gresen valves,a two spool A6 stamped,a three spool K84. What are they internaly used for? I bought them many years ago and have forgotten the specs. I also have two Vickers pumps that I need the specs for,first one is v10 1s2s 3C20. The second is a V10P 1S7K 1D3D10 140KM.
Oh I just...