Valve Failure
Metallurgical failure analysis was requested after a hot
water valve failed, flooding a residence. Visual,
microscopic, and x-ray examination of the failed valve
indicated that the cause of the leak was a damaged
neoprene washer. Analysis revealed that the washer
had been damaged by heat during initial valve installation causing it to
fail. The heat damage of the neoprene washer was determined to be due to
improper installation of the valve by the plumber who
originally installed the valve.
Photograph A: Close-up view of failed hot
water valve neoprene washer. Neoprene
washer damage occurred during original valve
installation.
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Dr.
R. Craig Jerner, Ph.D., PE specializes in accident
investigation and metallurgical failure analysis,
with over 30 years experience as a metallurgical
consultant and accident investigator. He has
testified as a metallurgical expert in over 250
depositions and more than 70 court appearances. If you or someone you know should need the services of Dr. Jerner and J.E.I. Metallurgical, please visit our web site at the buttons below, or e-mail Dr. Jerner --- 