High pressure cylinder valves with pneumatic actuator for corrosive gases – D156S
High pressure Pneumatic cylinder valve - 2-piece Stem design - spring loaded gland packing - soft seat
Key advantages
  • 2-piece sturdy stem design in order to reduce particle generation.
  • Non rotating lower spindle for increasing tightness during life time.
  • No particle shedding threading in gas wetted areas.
  • Self-adjusting compression of V-packings using disc springs, allowing a service temperature range from -40° to +65°C.
  • Locking nut having left-hand thread that secures the valve mechanism, even if excessive torques are applied.
  • O-rings fitted behind V-packings guarantee a secondary sealing, and they avoid the risk of humidity coming in contact with the gas wetted areas.
  • Soft seat induces low operating torque.
  • Soft seat is fixed with a special screw and its design improves the valve’s robustness against over torques.
Working pressure200 bar
Nominal flow rateCV = 1.1
Temperature range-40 to +70 °c
Body materialsAlSI 303, AlSI 316L
Leak rate<1.10-5 m bar L/s
Seat orifice size6 Mm
MarkingProduction date, 3 stars, valve number
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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