Valve Packing PGT4 GR8622 S


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


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.


PGT4 GR8622 is specific for Low Emission services of Industrial Valves. Suitable also for HT/HP steam services.

Valve Packing PGT4 GR8622 S
P bar Ibf/in2 Vm/S f/pm pH T °C T °F
500 7500 2 400 0÷14 -200 ÷ 450 / 650 -328 ÷ 840 / 1200