High vacuum PTFE stopcocks

These straight pattern Rotaflo® High Performance PTFE stopcocks are individually tested for 10-9 Torr vacuum performance.

  • Rotaflo High Performance vacuum stopcocks providing many significant benefits to the user:
  • Borosilicate glass with PTFE key for excellent chemical resistance
  • No lubrication required - no seizure and no contamination
  • Temperature range from -20°C to 200°C
  • Operates over a pressure range of +1bar to 10Torr
  • Individually tested by mass spectrometer and supplied with certificate for guaranteed performance
  • Locking ring to prevent accidental removal of the key
  • Fully interchangeable keys
  • Ergonomic key for good grip and easy operation

Product Specification

Grouped product items
Item Code Approx overall length mm Key bore mm Sidearm bore mm Sidearm OD mm Pack quantity
HP3ST/5 210 3.0 5 8 1
HP3ST/7 210 3.0 7 10 1
HP6ST/7 210 6.0 7 10 1
HP6ST/10 210 6.0 10 13 1
HP10ST/10 225 10.0 10 13 1

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