[jspatz1]

I believe you are talking about a 3-position, center-closed valve. We have never received one of these as far as I know, only 2-position valves. You could probably find a used 3-pos. valve in the Ebayish market if you are in a position to buy one.

As you said the only way to achieve the same function with the 2-position valves we use is with multiple valves, but this should be pretty straightforward with 2 valves. With single solenoid, spring return valves (like the Festos), you could have one on the supply line, and one on the exhaust line, and simply fire one or the other when you want to fill or bleed. You'll need to plug 2 ports on the valves to make them into simple open/close ("2-way") valves. This setup would be essentially identical to firing either side of a 3-pos. valve, and work just as well.