OVERVIEW: Valve parts were not available from the OEM and a replacement was going to cost an estimated $120K. Repairs effectively saved the asset owner considerable time and money in full valve replacement. The refurbished paddle is now reinforced using Kevlar and expected to provide more than 10 years of additional service life.
INDUSTRY
ENVIRONMENT
15°C – 30°C sea water
SUBSTRATE
Rubber Lined Mild Steel
CHALLENGE
The 10-year-old valve experiencing cavitation damage with replacement unavailable within a reasonable time frame. Quick turnaround for return to service required.
SOLUTION
Protect critical surfaces by masking and abrasive blast areas to be repaired.
Weld new gussets to provide mechanical strength where lost.
Application of Epo-Chem™ RS 500P to a nominal thickness of 100µm, rebuild original profile height using InD-cote™
Top coat using Epo- Chem™ RP 500 with a nominal DFT of 350µm
PRODUCTS
Epo-Chem™ RS 500P a wet and surface tolerant mio epoxy primer
Epo-Chem™ RP 500 series, a moisture tolerant ceramic filled epoxy top coat, providing excellent long term cavitation resistance.
OUTCOME
Valve parts are not available from the OEM and a replacement was going to cost an estimated $120K. The repairs have effectively saved the asset owner considerable time and money in full valve replacement. The refurbished paddle is now reinforced using Kevlar and expected to provide more than 10 years of additional service life.
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