Vacuum pump rotors in geothermal plants are destroyed by stress corrosion cracking (SCC) from H2S and chlorides. Rotor vanes experience cyclical bending, causing surface cracks, which lead to complete fractures. Vooner can prevent SCC with the right material. Vooner offers vacuum pumps, which bolt in to replace CL and 904 pumps. They are fabricated in the US, in duplex stainless steel, to resist SCC.

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