Hello Mr. Mswlogo,
Thankyou for the reply.
I did neglect to take into account the VFD's boot routine. It surely would not appreciate being turned off/on like the family toaster. Considering what these things cost, I certainly don't want to tempt fate. So, I will go the valve route.
Red Hat / ASCO is the valve for me; proven reliability and parts available anywhere.
J
