NA B-3 + 707 Low Emission Packing Set

Combination set consisting of NA B-3 Inconel jacketed expanded graphite braided packing as end rings and NA 707 flexible pure graphite die-formed packings as intermediate rings

  • The most advanced technology valve packing set designed for high pressure application and extreme performance
  • Tested at Yarmouth Research and Technology, USA and complied as per API 622, 2nd edition with 25 ppm average leakage
  • Tested at Yarmouth Research and Technology, USA as per API 589/607 Fire Safe test
  • Packing set made from high quality braided and moulded graphite in a unique configuration
  • The braided end rings are excellent wiper rings, prevent build up of free graphite/contamination on the valve stem, increase extrusion resistance, pressure resistance and dimensional stability
  • Packing set treated with a high temperature resistant solid lubricating agent to reduce friction even at elevated temperature

Packing set treated with sacrificial corrosion inhibitor to prevent valve stem corrosion

Service Media and Conditions Steam, hydrocarbons, hydrogen, catalysts, oils and gases, acid and alkali etc
Temperature -196┬░C to 540┬░C
Pressure 425 bar (static)
pH 0 to 14
Applications Valves