montag

Thanks for finding that part Nealtw. This makes me think I could replace the part myself.

nealtw

It may be working just find, you might do better to find out what it's doing and why. there might be a problem with something else.

montag

Yes we are going to call in a plumber since this may be a symptom of some other problem. Thanks for the help.

Wuzzat?

IAW my decision theory book which says to list all possibilities,

Wilkins not working properly (internal failure)
Wilkins working properly (other PRV not working)
PRV not working properly (Wilkins is saving your house from an exploding water heater, see YouTube videos)
PRV working properly (Wilkins giving you a false positive)
Both valves not working properly
Both valves working properly but have different setpoints.