Thx Jay. Seems they are getting more rare these days. Did read something about them being error prone, know anything about that? If you can't find any I may try to engineer something that is compatible with the I/O of the controller.
4 ports on them and the connection is 9 wires, the Profec B you can run a Mac valve from as it's only 2 wires to the solenoid
The A is an excellent wee unit, completely transformed the way the GT drove, cant wait to get 1 into the Dina and turn it up a bit
Probably some old tech that required many wires to operate the valve due to a restriction in the controlling unit or bleeding valve back then. Wil check what is inside one of those solenoid ones I get one.