Metal Seated Trunnion Ball Valve
Metal-seated trunnion ball valves for different services (slurries, pulp and liquors, high temperatures, abrasive or sticking fluids, control) are tested for bubble tight sealing.
- Bubble-tight sealing up to 327°C and Class V up to 500°C
- Low coefficient of friction
- Excellent sliding and running properties
- Hardens the complete surface of the ball and seats
- Pressure Rating
- Class 150-2500
- Temperature Range
Metal Seated Trunnion Ball Valve Drawing
- Cast Steel Metal Seated Trunnion Ball Valve
- Forged Steel Metal Seated Trunnion Ball Valve
|Part No.||Part Name||ANSI*||DIN*|
|Carbon steel||Stainless steel||Carbon steel||Stainless steel|
|1||Body||A105/A350 LF2||A182 F316||1.0352||1.4401|
|6||Body seal 1||Graphite||Graphite|
|7||Body seal 2||Graphite||Graphite|
|8||Spring Seat||Inconel X-750||Inconel X-750|
Chrome Carbide (CrC)
Chrome carbide is the standard coating for Relia ball valves, is well suited to very high-temperature gas or liquid applications, and has excellent resistance to wear, erosion, and corrosive media. It has certain limitations in chlorine services and wet sulfur.
Hard Chromium (HCr)
Hard chromium is suited to a wide range of applications in liquids and gases. It is limited to moderate pressures and temperatures. HCr is not suitable for strong acids and fluids with high chloride content.
Tungsten Carbide (WC-Co)
Tungsten carbide is very resistant to wear and erosion from slurries, powders, and muds. It works well in cryogenic applications, hydrocarbon gases and liquids, oxygen, and dry gas services. It has limitations in terms of corrosive services and condensates.
Cobalt-based coatings (Stellite) provide excellent mechanical wear resistance, superior corrosion resistance, and good performance at high temperatures (up to 535 °C). Stellite is used in a lot of applications in the pulp and paper industries and in refining applications.