1.Suitable for high temperature nuclear service or where low chloride content is desirable
2.Provides leak-free operation, high thermal conductivity, and long service life, but produces high stem friction and resultant hysteresis.
3. Impervious to most hard-to-handle fluids and high radiation
4.Suitable temperature range: Cryogenic temperatures to 1200°F (649°C)
5. Lubrication not required, but an extension bonnet or steel yoke should be used when packing box temperature exceeds 800°F (427°C).