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Spectropur Purge block SBE3

Spectropur Purge block SBE3

  • Purge block for hazardous gases and ultra high purity gases from grade 6.0
  • Minimized purge volume of only 2,6 cm³
  • Capillary tube allows purging into the cylinder valve
  • Metal-to-metal seal to atmosphere
  • All gas-wetted parts made of stainless steel SS316L, Hastelloy C276 and PCTFE or PVDF respectively
  • Fully functional even when valves are evacuated
  • Minimum particle generation, as no parts are exposed to friction and no spring is in the gaswetted area
  • Embedded soft seat seal made of PCTFE permits frequent operation without loss of tightness
  • Modular design for easy replacement of internal parts
  • Clearly legible position indication (on/off)
  • Electro-polished surfaces (gas wetted)
  • 100 % Helium leak tested
  • Shorter purge cycles due to minimized dead space
  • Assembly in clean room class ISO 5.0

 

Working pressure
Manual valve: max. 300 bar
Pneumatic valve: max. 25 / 100 / 200 / 300 bar
Materials
Body: Stainless steel 1.4404
Diaphragms: Hastelloy C276
Other gas-wetted parts: Stainless steel 1.4404
Valve seat: PCTFE or PVDF (gas depending)
Surface roughness: Ra,max ≤ 0.25 μm
Surface roughness (gas-wetted area): Ra,Avg ≤ 0.18 μm
Temperature range: Stainless steel
Leak rates
to atmosphere: ≤ 10-9 mbar l/s He
via seat: ≤ 10-6 mbar l/s He
cv-value: cv = 0.13 (kv = 0.11)
Nominal size: DN 3
Weight: .7 kg with manual valves

 

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