I have a couple of hydraulic valves that I will need to sell for a friend and I can't figure out what to call them - one is made by Adel, one by SA-AL - both are dated in the 50s. These valves have a pressure port, a return port, and a "cylinder 1" and "cylinder 2" port - so if you have a push/pull cylinder, you wire the "cylinder" ports to the two ports on the cylinder, and take pressure and return from the pump and to the resivoir respectively. Both are solenoid valves with a manual override capability
So, what does one call this kind of valve? I've spent way too much time wandering around the net without finding a valve like it - it may well be a spool valve mechanism inside, but there must be a name for the valve to extend/retract a cylinder.
(oh, and if anyone wants one, I also have a cylinder that could go with it, but the cylinder is much much heavier than a valve)
TIA Bill
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will iam_ b_ No ble at msn daught com