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FlangeTec® ASME-API :
HP/HT Compact Flange


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The FlangeTecŪ ASME Compact Flange Series is a high performance flange system used as an alternate to conventional ASME and API flanges. Offering high integrity sealing the FlangeTecŪ Series accommodates High Pressure and High Temperature service especially where high external loads are present. Utilized in a multitude of Industries and applications, the FlangeTecŪ CF Series offers dramatic weight and space savings when compared with Standard ASME and API Flange systems used in process piping, pressure vessels and OEM equipment. Uniquely offered for standard Industrial service as well as custom ranges for High Temperature (HT Series) for specific operating conditions from 500°F (260C°) to 1000°F (538°C). The FlangeTecŪ CF Series is now available with API 6A monogram.


  1. Up to 1/5th the equivalent ASME Flange weight and space

  2. Almost twice as quick to assemble and dis-assemble with reduced bolt sizes to tighten

  3. Over 50 years of proven Fire safe "All Metal" Gas Tight Leak Tight Sealing Technology

  4. Uses up to 75% less bolt torque when making up with no periodic re-tightening necessary

  5. Self Energized, re-usable seal ring 6. Swivel Flange design option available


  • Codes: ASME VIII Div. 1, Div. 2, Div. 3, API 6A, API 6H and PED

  • Ratings: ASME 600lbs, through 4500lbs, API 6A 2M thru 40M. Temperature range from -425°F (254°C) to 1600°F (871°C)

  • Sizes: 1/2" (12mm) through 200" (5000mm)

  • Materials: CS c/w Cladding, Alloy, SS and Chrome/Nickel Alloys

  • Options: Third Party Design Verification as required


See FlangeTecŪ HT CF Series Options, FlangeTecŪ Seal Options, FlangeTecŪ Instrumentation Options, all Components are offered meeting NACE MR-0175 latest edition as required.