Chief Delphi - picture/diagram of controllable single/double

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holty531

17-02-2008 23:28

picture/diagram of controllable single/double

does anyone have picture or diagram of the controllable actuator system, using a single to control air to the double?
i have tried following the text instructions i have searched however none seem it do it.

Jeff 801

18-03-2008 08:22

Re: picture/diagram of controllable single/double

Sorry to bring this back up but does any one out there have this digram or a link to it
Thanks

Racer26

18-03-2008 08:40

Re: picture/diagram of controllable single/double

It looks basically like this

Code:

                 --------  EA            ----------  EA

                |        |------\      P |         |-------| (plug)

Pressure In-----|   DS   | EB   |--------|    SS   | EB

                |        |------/        |         |-----> (open to atmosphere)

                 --------                ----------

                  |    |                   A|   B|

                 A|  B |                     \__/

          ------|=======|

Use the DS to control direction, and the SS to allow/disallow movement.

DonRotolo

18-03-2008 20:50

Re: picture/diagram of controllable single/double

An alternative is to just buy the correct solenoid valve to allow for mid-cycle positions called a "Three-position pressure center" valve. The spec sheet is here. Look at valve type SY3520-6H, for example.

Don

Racer26

19-03-2008 01:30

Re: picture/diagram of controllable single/double

That works too, under the current rules. The system I laid out above, and personally devised in ~2004 (maybe not the first to do so, but I did it on my own) works with exclusively KOP parts, and I would argue can be made better (with addition of a couple other components) than a center off valve, as far as stability/accuracy goes.

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