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

VAT
Closed/Open

Electromagnetic:
single acting with closing spring (NC)

VAT
Closed/Open

Electromagnetic:
single acting with opening spring (NO)

VAT

The operating pressure range of the 21.3 is between 1ₓ 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
  ManualElectromagnetic
with Closing Spring (NC)		Electromagnetic
with Opening Spring (NO)
Sizes DN 10 mm (⅜")DN 10 mm (⅜")DN 10 mm (⅜")
Actuators ManualElectromagnetic
with Closing Spring (NC)		Electromagnetic
with Opening Spring (NO)
Body Material Aluminum and Stainless SteelAluminumAluminum
Standard Flanges ISO-KFISO-KFISO-KF
Leak RateValve 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 Million3 Million
TemperaturWith Aluminium Body
With Stainless Steel Body		0– 80 °C
0– 120 °C		5 –40 °C
–		5 – 50 °C
–
MaterialAluminium Valve BodyEN AW-6023 (3.0306)EN AW-6082 (3.2315)EN AW-6026
 Stainless Steel Valve BodyAISI 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 NoneNoneNone
Mounting Position AnyAnyAny
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.
WeightAluminium 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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