Only challenge was to find the correct valve. They are associated with the ice maker kit (many), not the refrigerator, so make/model not of value. Fortunately the part had identifying numbers that a Google search matched to a part from Appliance Parts Pros, a company that I have used frequently in the past. Their good pictures confirmed that I could expect the correct part.
Ordered a replacement. I am a frequent on-line consumer, however; I was dumbfounded when the part I ordered arrived in my mail box the next day!!!!
Incredible work guys, thanks a lot.