A double-offset design reduces seat rubbing during operation. Seat material and the manufacturer’s pressure-temperature envelope determine suitability; one generic maximum cannot describe all configurations.
Triple-offset geometry is commonly used with metal sealing. Leakage class, bidirectional sealing and service temperature must still be verified for the actual product and test requirements.
Send medium, pressure, temperature, required leakage class, connection and actuator requirements. Selection also considers opening frequency and available installation space.