Reproducible Precision Over Exceptionally Large Pressure Ranges

The main requirements of a modern automated gas dosing valve are the degree of its controllability as well as its ability to reliably and precisely follow a predefined flow setting. The 62.7 Gas Dosing Valve series delivers both.

The 62.7 series is available in two different design versions: An electromagnetic actuated DN 5mm (3/16“) version and a stepper motor actuated DN 16mm (5/8“) version. Both versions are able to control the pressure in a range from < 1 · 10-8 mbar ls-1 to 2 bar (DN 5) and 2.5 bar (DN 16) at any level in a very fine way. This means the flow characteristic from the initial opening to full conductance can be fully controlled at any pressure level. Not only does this mean that the 62.7 series is outstanding in its operational range, providing just one valve solution where normally several different valves would be needed. The series also provides  unprecedented controllability. The special isolation and controlling system of the 62.7, a combination of a needle and plate mechanism for the DN 16 and an aperture and plate mechanism for the DN 5 allow very smooth opening characteristics that avoid any pressure change peaks even at very low conductance.

The chosen flow characteristic can be defined via a fixed setting or they can be operated in a dynamic setting where the 62.7 is connected via its controller to a pressure sensor in the process.

Tested in thousands of demanding applications under various process conditions, the 62.7 series has proven its outstanding performance.


DN 5

Closed
Open

DN 16

Closed
Open

The 67.2 Gas Dosing Valve is available in stainless steel with customer specific flanges for DN 5 and ISO-KF for DN 16. Gas flow characteristics can be directly defined on the external valve pressure controller via PC connection or via integration in a production process control unit (PCU).


Key features of the 62.7 Gas Dosing Valve

Features:

  • Outstanding wide flow control range
  • Outstanding controllability at very small conductance
  • Integrated power failure shut-off function

Benefits:

  • Outstanding process controllability
  • One valve solution for different pressure regimes
  • Excellent reliability and lifetime
  • Low cost of ownership
Technical data
    DN 5 (3/16") DN 16 (⅝")
Actuator   Electromagnetic Stepper Motor
Body Material   Stainless Steel Stainless Steel
Feedthrough   Shaft Feedthrough Shaft Feedthrough
Standard Flanges   Specific ISO-KF
Leak Rate Valve Body, Valve Seat < 1 × 10-9 mbar ls-1 < 1 × 10-9 mbar ls-1
Pressure Range   < 1 × 10-8 mbar ls-1 to 2 bar (abs) < 1 × 10-8 mbar ls-1 to 2.5 bar (abs)
Differential Pressure on the Plate   ≤ 1.0 bar ≤ 1.1 bar
Temperature Valve Body, Plate
Ambient

5 °C– 50°C
≤ 150°C
5 °C–40°C
Material Valve Body
Plate
AISI 316L (1.4404 or 1.4435)
AISI 430IL (1.4105IL)
AISI 316L (1.4404 or 1.4435)
AISI 316L (1.4404 or 1.4435)
Seal Plate
Dosing Sleeve
FPM
FPM
Fluoropolymer
Mounting Position   Any Any
Controllable Conductance Minimum/Maximum 10/ 5000 sccm 5 × 10-6 /1250 mbar ls-1
Operating Time Closing / Opening < 30 ms / < 30 ms 3 s / 4 s
Power Supply   24 VDC / 12 VA 24 VDC / 12 VA
Control   Digital with controller
Analog 0…10VDC
Digital with controller
Analog 0…10VDC
Weight   0.096 kg / 0.2 lbs 0.8 kg / 1.8 lbs

 

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