High Pressure line valve for UHP gases with pneumatic actuator – D688
High pressure, High flow cylinder valve -Tied diaphragm seal - pneumatic
Key advantages
  • Combined soft and metal seat design with low permeation rate.
  • Welded diaphragms provide a high leak tightness integrity
  • Tied diaphragm design which minimizes gas wetted volume to allow easy purging.
  • No moving components in the gas wetted area to not generate particles.
  • Secondary sealing to prevent the gas coming in contact with actuator in the case of diaphragm failure.
  • Threaded weep hole for leak test and pipe away connection (M4 thread), allows the connection to a leak detector.
  • Front and back panel valve fixation
ConnectionsAccording (inter-)national standards, customer’s specifications
Working pressure200 bar
Nominal flow rateCV = 0.25
Temperature range-40 to +65°C
Body materialsStainless steel 1.4435 (AISI 316L)
Leak rate1.10-8 m bar L/s
Seat orifice size4 Mm
Markingπ0029 (according to TPED), 3 stars, valve number, manufacturing date, Nominal pressure and flow direction
Dimensional drawings
Downloadable catalogs, brochures
  • Download
    Puretec Catalog
    Last update: Jan 15, 2024
    Available in: en
  • Download
    Puretec overview
    Last update: Jan 15, 2024
    Available in: en
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