CDI Energy Products, specialist in polymer components, has announced that its latest material to achieve API 610 recognition, the thermoplastic polymer composite, dures 200, has outperformed service life expectations under extremely corrosive sulfuric acid conditions.
API 610 is the standard for centrifugal pumps for petroleum, petrochemical and natural gas industries. CDI’s dures 200, was the foundation for critical components developed for an API 610 vertical single casing diffuser pump (VS1) for a high-production sulfuric acid plant.
CDI’s material scientists and engineers collaborated with the pump OEM to custom design suction bell eye case rings, bowl eye case rings, and bowl bushings which could sustain differential pressures of over 200psi, coupled with an extreme temperature profile of -20⁰F to105⁰F (-28.8⁰C to 40.55⁰C).
The pump OEM, a global industry leader in centrifugal, positive displacement, and specialty pumps required a material with higher thermal stability and higher creep resistance than Polytetrafluoroethylene (PTFE).
CDI’s dures 200 was developed to support service applications with aggressive acids and bases, aromatics, and amines. The pump OEM has indicated that the custom components are still in active use by the end-user.