Flange Insert Class 150 & 300 Series (F1)

  • Check valve that fits between ANSI Class 150, 300 or 600 flanges for use with Standard Schedule or lighter pipe.  Fits inside flange bolt circle with minimal space required.
  • Product details (New window will open).
  • Fits up to SCH 40 pipe
  • For Class 150, sizes 5″ thru 20″ contact the factory.
  • .125 PSI springs are not recommended for installations with flow vertical down.
  • “Metal-to-Metal” and PTFE seats are not resilient.  See allowable leakage (New window will open).
  • Listed below are the most common selections. Please contact the factory for additional options.
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