Precise Manual/Automatic Venting with Failsafe Protection

The main requirement of a modern venting valve is a reliable, precise and fast-acting venting mechanism. A degree of modularity allowing configurations that can address various process and installation conditions is also important.

The 21.3 venting valve is laid-out to address nearly all venting requirements of vacuum systems. Designed for a reliable, extended service-free operation, the series is available with manual as well as automatic actuation.

The electromagnetic actuated automatic version stands out in particular for its special design. The elimination of any feedthrough and fully enclosed operation with the actor as closing device allows outstandingly fast operation without the service requirements of normal valves with shaft feedthrough. It also eliminates leakage risks.     

The automatic version also offers a failsafe mechanism that reacts in case of power loss. The mechanism is available in failsafe closing or opening configurations (NC or NO version) to address both process and installation requirements.


Manual

Closed/Open

Electromagnetic:
single acting with closing spring (NC)

Closed/Open

Electromagnetic:
single acting with opening spring (NO)

The operating pressure range of the 21.3 is between 1 10-8 mbar and 1.2 bar (abs) with a gas flow of 50 l in 14 sec. (manual), 100 l in 30 sec. (NC version) and 50 l in 270 sec. (NO version).

Tested in thousands of demanding applications under various process conditions, the 21.3 has proven its outstanding reliability.


Key features of the 21.3 Venting Valve

Features:

  • Fast acting
  • Power failsafe in open or close position

Benefits:

  • Extended service-free operation
  • Modularity
  • Low cost of ownership

Technical data
    Manual Electromagnetic
with Closing Spring (NC)
Electromagnetic
with Opening Spring (NO)
Sizes   DN 10 mm (⅜") DN 10 mm (⅜") DN 10 mm (⅜")
Actuators   Manual Electromagnetic
with Closing Spring (NC)
Electromagnetic
with Opening Spring (NO)
Body Material   Aluminium and Stainless Steel Aluminium Aluminium
Standard Flanges   ISO-KF ISO-KF ISO-KF
Leak Rate Valve Body, Valve Seat < 1 × 10-9 mbar ls-1 < 1 × 10-9 mbar ls-1 < 1 × 10-7 mbar ls-1
Pressure Range   1 × 10-8 mbar to 1 bar (abs) 1 × 10-8 mbar to 1 bar (abs) 1 × 10-8 mbar to 10 bar (abs)
Differential Pressure
on the Plate
In Closing Direction
In Opening Direction

10 mbar
1 mbar

Differential Pressure
at Opening
In Closing Direction
In Opening Direction

2 mbar
1 mbar

Cycles until first Service   1.5 Million 3 Million
Temperatur With Aluminium Body
With Stainless Steel Body
0– 80 °C
0– 120 °C
5 –40 °C
5 – 50 °C
Material Aluminium Valve Body EN AW-6023 (3.0306) EN AW-6082 (3.2315) EN AW-6026
  Stainless Steel Valve Body AISI 303 (1.4305)
  Plate: Aluminium Valve
Stainless Steel Valve
EN AW-6023 (3.0306)
AISI 304 (1.4301)
Seal   FKM (Viton®) FKM (Viton®) FKM (Viton®)
Feedthrough   None None None
Mounting Position   Any Any Any
Power Supply   200– 240 VAC, 50/60 Hz
100– 115 VAC, 50/60 Hz
24 VAC, 50/60 Hz
24 VDC
200– 240 VAC, 50/60 Hz
100– 115 VAC, 50/60 Hz
24 VDC
Venting Time   50 l in 14 sec. 100 l in 30 sec. 50 l in 270 sec.
Weight Aluminium Valve
Stainless Steel Valve
0.1 kg/0.22 lbs
0.15 kg/0.33 lbs
0.46 kg/1.01 lbs
0.1 kg/0.22 lbs

 

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