The wastegate throttle valves are used to control turbocharged engines. The throttle valve determines the amount of exhaust gas driving the turbocharger’s turbine. This is because the load depends on the torque of the compressor wheel, which is connected to the turbine via a shaft. When closed, the throttle valve stops ensure a better seal and minimal leaks. This arrangement means that the blocking cannot occur in the closed position.

• Resistant to high temperatures and corrosion
• Optimal sliding properties over a wide temperature range
• Connection to the actuator can be established using a linkage or a shaft with a high-temperature coupling