The Compact, Economic Alternative to Traditional Gate Valves

The key element of the 20.3 VATTERFLY Valves is the special VATterfly technology. The VATTERFLY closing mechanism operates significantly differently to conventional butterfly technology. During the closing cycle, the plate is moving without any contact with the valve body, avoiding any risk of activating potential particles, e.g. particles that have accumulated from gas by-products. It can also be mechanically locked in the open and closed positions similar to a gate valve for additional safety.     

These features make the 20.3 especially suitable for isolation requirements in contaminating and aggressive processes. Tested in thousands of demanding applications under various process conditions the 20.3/20.4 series has proven its outstanding reliability.

VAT
Closed

The 20.3 VATTERFLY Valves are available in a compact standard body version (20.3) in which the plate rotation is covered by an extended body on the downstream side.

The valves are available in sizes DN 63 – 200mm (2½” – 8”) with valve bodies in stainless steel or aluminum. Both versions come with either ISO-KF or CF-F flanges as standard but other flanges can be supplied. The actuation is double-acting pneumatic with a 24 VDC solenoid valve although other voltages can be specified.

Key features of the 20.3 VATTERFLY Valve

Features:

    • Low level of particle activation
    • Resistance against process contamination
    • Mechanical locking in open and closed positions

Benefits:

    • High uptime in contaminating and aggressive processes
    • Reliable operation
    • Lower cost of ownership compared to traditional gate valve solutions
  • Technical data
Sizes DN 63 (2 ½"), DN 100 (4"), DN 160 (6"), DN 200 (8")
ActuatorPneumaticDouble acting
Body Material Aluminum or Stainless Steel
Feedthrough Rotary Feedthrough
Standard Flanges ISO-F, CF-F
Leak RateValve Body< 1 × 10-9 mbar ls-1
 Valve Seat< 1 × 10-9 mbar ls-1
Pressure Range 1 × 10-8 mbar to 2 bar (abs)
Differential Pressure on the GateIn Opening Direction≤ 1.2 bar
 In Closing Direciton≤ 1.6 bar
Differential Pressure at Opening ≤ 500 mbar
Cycles until first Service 100 000
TemperatureValve Body≤ 120 °C (150 °C optional)
 Actuator≤ 120 °C
 Solenoid Valve≤ 50 °C
 Position Indicator≤ 80 °C
MaterialAluminium Valve Body, PlateEN AW-6060 (3.3206), AW-6061 (3.3211), AW-6063 (3.3206), AW-6082 (3.2315)
 Stainless Steel Valve Body, PlateAISI 304 (1.4301)
 MechanismAISI 316L (1.4435), AISI 304 (1.4301)
 Support ring: StandardPOM
 Support ring: 150 °C OptionPEEK
SealBonnet, Plate, FeedthroughFKM (Viton®)
Mounting Position any
Solenoid Valve 24 VDC, 7.6 W (others on request)
Position Indicator: Contact RatingVoltage≤ 50 V AC / DC
 Current≤ 0.5 A
 Powermax. 10 W

 

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20.3 1 × 10-8 mbar to 2 bar (abs)

VATTERFLY Valve

Art. no. 20336-CE14

Size: DN 63 (2 ½")

Material: Stainless steel

Actuator: Pneumatic: double acting

Position Indication Signal: No

Solenoid valve: No

Flange: CF-F (metric threads)

20.3 1 × 10-8 mbar to 2 bar (abs)

VATTERFLY Valve

Art. no. 20336-CE24

Size: DN 63 (2 ½")

Material: Stainless steel

Actuator: Pneumatic: double acting

Position Indication Signal: Yes

Solenoid valve: No

Flange: CF-F (metric threads)

20.3 1 × 10-8 mbar to 2 bar (abs)

VATTERFLY Valve

Art. no. 20336-CE34

Size: DN 63 (2 ½")

Material: Stainless steel

Actuator: Pneumatic: double acting

Position Indication Signal: No

Solenoid valve: Yes

Flange: CF-F (metric threads)

20.3 1 × 10-8 mbar to 2 bar (abs)

VATTERFLY Valve

Art. no. 20336-CE44

Size: DN 63 (2 ½")

Material: Stainless steel

Actuator: Pneumatic: double acting

Position Indication Signal: Yes

Solenoid valve: Yes

Flange: CF-F (metric threads)

20.3 1 × 10-8 mbar to 2 bar (abs)

VATTERFLY Valve

Art. no. 20336-PA14

Size: DN 63 (2 ½")

Material: Aluminum

Actuator: Pneumatic: double acting

Position Indication Signal: No

Solenoid valve: No

Flange: ISO-F

20.3 1 × 10-8 mbar to 2 bar (abs)

VATTERFLY Valve

Art. no. 20336-PA24

Size: DN 63 (2 ½")

Material: Aluminum

Actuator: Pneumatic: double acting

Position Indication Signal: Yes

Solenoid valve: No

Flange: ISO-F

20.3 1 × 10-8 mbar to 2 bar (abs)

VATTERFLY Valve

Art. no. 20336-PA34

Size: DN 63 (2 ½")

Material: Aluminum

Actuator: Pneumatic: double acting

Position Indication Signal: No

Solenoid valve: Yes

Flange: ISO-F

20.3 1 × 10-8 mbar to 2 bar (abs)

VATTERFLY Valve

Art. no. 20336-PA44

Size: DN 63 (2 ½")

Material: Aluminum

Actuator: Pneumatic: double acting

Position Indication Signal: Yes

Solenoid valve: Yes

Flange: ISO-F

Customized Solution

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