Devcon Maintenance and Repair Solutions - Sintemar

Field Application Reports
Products:
Application Date:
Customer:
Industry:
Location 61
Ball Valve Repair
Ceramic Repair Putty / Brushable Ceramic
9/3/97
Ministry Of The Environment
Water Treatment
Problem:
The ball guides and seat area of the valve were worn by abrasive first stage sewage waste. Two of the four
ball guides were completely worn away along with the ball seat. Past repair method was to replace entire
valve assembly. Valve assembly replacement cost was estimated to be $22K.
Solution:
Repair area was dried using a heat gun. Complete repair area was roughened using a drill. The drill bit
provided undercuts that were used to establish better mechanical bonding properties for epoxies. The
complete repair area was then chemically cleaned using Cleaner Blend 300. Using evidence marks as
guides, Ceramic Repair Putty was used to rebuild all worn missing metal. Release agent was applied to the
ball then set into it’s operating position. Release agent must be used for easy part separation following cure.
Following a partial cure of Ceramic Repair Putty, (4 hours), Brushable Ceramic was applied to a thickness
of 30 mils in two 15 mil coats. Brushable Ceramic provides a long lasting, abrasion resistant, low
coefficient to friction surface coating. Devcon’s repair cost was $250.