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KTM Model Gratite Seat Hi-Temp
Model Gratite Seat Hi-Temp
KTM Gratiteseat ball valve operates across an impressive range of temperatures, boasts outstanding performance and a reliability, making it ideal for high pressure, anti-corrosion and other key process lines.
KTM Model Gratite Seat Hi-Temp


Fire Safe, CE, NACE, SIL capable, PED
End Connection
Cogeneration, Clean Steam, Refining, Reactors, HRSG, High Temp, Heating Equipment, Blower, Heater-Treater
Body Design
Side Entry, Long Pattern
316 Stainless Steel, Alloy, Carbon Steel
Pressure Class
Process Connection Type
CL600RF, CL300RF, CL150RF, 600RF, 300RF, 150RF
Seat/Seal Type
Shutoff Class
API 598, Class VI (FCI 70-2), Zero Leakage
ASME B16.34, API 608
Valve Size
NPS 1 / DN 25, NPS 1/2 / DN 15, NPS 1-1/2 / DN 40, NPS 2 / DN 50, NPS 2-1/2 / DN 65, NPS 3/4 / DN 20, NPS 3 / DN 80, NPS 4 / DN 100
Valve Size Standard
Valve Type
Ball, Ball Valve, Floating Ball Valve
Steam, Mineral Oil, Fuel Oil, Air, Inert Gas, Air


  • 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