Composition
PGT4 GR8622: Pure flexible graphite die-formed rings and graphite braided packing GR8622 as wiper rings
| Graphite Features | ||
| Density | g/cm3 | > 1.00 |
| Carbon content | % | > 99.00 |
| Ash | % | < 1.00 |
| Sulfur content | ppmv | < 300 |
| Leachable chloride | ppmv | < 20 |
| Halogen content | ppmv | < 200 |
Characteristics
PGT4 GR8622 is the certified low emission stem seal complying with API std 622 3rd Edition and ISO 15848 BH C01 et C02 which makes a valid solution for reducing the type of seal used for the first use on new valves. Indeed, it can be used as much in the context of Oil & Gas and Chemicals, as in high pressure and temperature steam applications. PGT4 GR8622 it’s a special valve stem graphite sealing set composed by die-formed flexible graphite and wiper braided rings style GR8622. PGT4 GR8622, which meets the Low Emission requirements, guarantees long life service. It fulfills the specifications IOGP S611 Annex E and F, S562 Annex T and U.
Applications
PGT4 GR8622 is specific for Low Emission services of Industrial Valves. Suitable also for HT/HP steam services.
