Integrated valve with flow selector - D552 Flowcal
The D552 from Rotarex Puretec is a Stainless Steel gas valve with integrated pressure regulator and flow selector. The D552 is designed for a wide range of calibration gases, thanks to it's stainless steel body and internal components. The all in one design insure the maximum safety & ease to use during calibration operations.


  • Ensure high-quality of the process thanks
    to a 5-in-1 design: shut off valve + integrated pressure regulator + flow selector+ filling port + gauge
  • Effcient solution for applications requiring additional pressure / flow regulating valve
  • Ergonomic design, all functions integrated for
    more comfortable usability
  • Light weight as an advantage: 750 g without the plastic guard


  • Protection of all the parts guarantees the work in better safe environment especially for mobile applications
  • Low-pressure components of the valve are protected for unintended high pressure
  • Re-closing device of the safety valve closes gas when pressure is below a threshold
  • Gas is tightly isolated during transport or storage thanks to the technology of manual shut-off valve
  • An optional safety relief device is a burst disk in line with a fusible metal. In case of a heat incident like a fire, the safety device empties the cylinder to avoid a burst of the cylinder


  • 7 fixed flow rates available (0,1 – 0,25 – 0,5 – 1,0 – 2,5 – 5,0 – 10,0 Nl/min N2)
  • Correct flow rate is guaranteed by flow selector
  • Stainless steel sintered filter prevents particles to flow to the end user system


Flow rates and tolerances


ConnectionsFilling port: acc. to customer specification
Working pressure200 bar
Flow rateSee the table above
Seat sealMetal/metal (details on request)
Flow coefficient cv0.05
Body materialsStainless Steel AISI 316L
Temperature range-20 to + 65 dc
Downloadable catalogs, brochures
  • Download
    Puretec overview
    Last update: Jan 15, 2024
    Available in: en
  • Download
    Puretec Catalog
    Last update: Jan 15, 2024
    Available in: en
  • Download
    Flowcal D552
    Last update: Jun 07, 2023
    Available in: en
Connect with an Expert

This site uses cookies.

Rotarex uses cookies to ensure a better and easier online experience. Please click here to accept the continued use of these cookies after reading our revised COOKIES POLICY.

Please note, you may continue to use the website even if you do not accept the use of cookies. However, the visitor experience on subsequent visits will be diminished.

Read the full COOKIES POLICY.

Refuse all non essential cookies