Chemstar NQ 6226/NQ

Chemstar NQ 6226/NQ

Chemstar NQ 6226/NQ

Features

Chemstar NQ 6226/NQ is a diagonally braided 100% PTFE silk packing, impregnated with a pure PTFE dispersion. According to the Siemens specification for nuclear power stations, the low-chloride PTFE packing is of nuclear grade and suitable as a reserve component in nuclear valves.

Advantages

  • High structural strength
  • High cross-sectional stability
  • Suitable for nuclear applications

Operating range

Valves
Pressure: p = 500 bar
Sliding velocity: vg = 2 m/s

Temperature
  • Continuous operation:
    t = -200 °C … +290 °C
  • transient peak temperature:
    t = +300 °C

Chemical resistance:
pH = 0 ... 14
Universal chemical resistance Not suitable for use in abrasive media or in hot water and hot steam applications.

Standards and approvals

  • FDA
  • BAM (upon request)
  • EPA provisions, article 3, 1935/2004

Notes

For gaps >0.03 x packing cross-section between the gland and shaft or shaft and stuffing box bore, we recommend the use of a header ring with Thermoflon TR 6232/TR.

Forms of supply

  • Sold by length, blank cuts, precompressed rings with straight or slanted cut
  • Box contents
    up to 6,35 mm: 1 kg
    7 - 10 mm: 2 kg
    11 - 13 mm: 3 kg
    14 - 24 mm: 5 kg
    from 25 mm: 10 kg
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