Originally Posted by Mb125
Did you test the diaphragm on the bi level doors by running vacuum straight to them first to make sure they work?
Now that you mention it, no I didn't but I will tomorrow. I wasn't getting
any vacuum on that port on the switch ergo why I'm suspicious of the switch.
Old Air products has a number of NOS vacuum valves and I'm going to call them
tomorrow. Also have a friend with an interchange manual. Will call him and see if there are any other 9-port switches in my configuration that will interchange.
Thanks for your assistance.