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Gratiteseat ball valve


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


Certifications Fire Safe, CE, NACE, SIL capable, PED

End Connection Flanged

Application Cogeneration, Clean Steam, Refining, Reactors, HRSG, High Temp, Heating Equipment, Blower, Heater-Treater

Body Design Side Entry, Long Pattern

Material 316 Stainless Steel, Alloy, Carbon Steel

Pressure Class ASME

Process Connection Type CL600RF, CL300RF, CL150RF, 600RF, 300RF, 150RF

Seat/Seal Type Ball

Shutoff Class API 598, Class VI (FCI 70-2), Zero Leakage

Standards 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 DN, NPS

Valve Type Ball, Ball Valve, Floating Ball Valve

Media Steam, Mineral Oil, Fuel Oil, Air, Inert Gas, Air