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Pipeline Products

Figure 500R Large Size Closures (16" +)

  • Hubs & cap are machined with a 30-degree bevel seat that has many advantages over flat face seats:

    Minimum of 3" thread length
    Superior O-ring retention groove
    Less risk for damage to sealing surface of hub
    Provides stabbing section on hub
    Greater tolerance for diametrical and lateral warpage

  • SA-516 GR 70 formed steel plate for caps
  • Subs machined from SA-105, SA-350 LF2 or A-694 forged steel ring
  • 1-pitch modified Acme threads
  • Three available hinge designs: horizontal, vertical & angle
  • Serial numbers for quick identification
  • Closure actuation tool (CAT™) included for tightening/loosening cap