PRG’s Variable Crown inspection/rebuild services currently include visual inspection of the roll, leak testing, disassembly and internal inspection, and reassembly and leak testing (static), in addition to:
• Dynamic leak testing
• Recording of profiles at operating temperature
• Longitudinal sealing rails and back spring
• I.D. and profile of shell
• End seals, sealing disc and springs
• Head sealing plugs, radial seals and bearings
• Concentricity of main bore to bearing bores
• Interference fit of bearings to bearing bore