KTM’s Gratite® seat ball valve not only operates across an impressive range of temperatures, from -29°C to 500°C, it also boasts outstanding performance and a reliability, making it ideal for high pressure, fire-proof, anti-corrosion and other key process lines.

With a split-body construction and floating, bidirectional, or uni-direction (Class 600) design, the Gratite® seat ball valve is an excellent option for industrial processes.


  • Hard graphite with excellent self-lubrication and anti-corrosion properties is adopted to the seat and flexible graphite to the cushion seal
  • Hard graphite seats and the graphite packing ensure a wide operating temperature range from -29°C to 500°C
  • Gratite® offers superior cost effectiveness in comparison to the metal seated valves
  • High resistance to thermal shock prevents the cracking caused by thermal shock seen in ceramics
  • With high conductivity, Gratite® has an anti‑static function
  • Blowout-proof stem (ASME Class 600 optional)
  • A two-piece body construction makes maintenance easier
  • The product features a fire safe design
  • Easy actuator mounting
  • It can be used for both flow directions (ASME Class 600, DN50 to DN100 is unidirectional flow).
  • Gratite® boasts outstanding sealing characteristics
    • Water pressure: Zero leakage
    • Air pressure: 10 cc / min / inch
    • (10 cc / min for the size of DN25 or less)

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KTM Gratite Seat Hi-Temp

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