When the Footprint Requires an Alternative to a Gate Valve 

The 21.0 FV Butterfly Valve provides the same reliable vacuum isolation that standard gate valves provide with the advantage of a lower footprint requirement. The butterfly principle combined with the compact actuator designs allows installations situations with very limited space.

In differential pressure conditions, the valve is fully operational.

Already installed in thousands of demanding applications under various process conditions, the 21.0 series has proven its outstanding reliability. With a robust design as well as reduced and easy maintenance, the 21.0 series convinces in all aspects.

The 21.0 FV Butterfly Valve has proved to be especially well suited as vacuum pump isolation valve.


Closed
Open

21.0 FV Butterfly Valve series is available in stainless steel, with standard flange connectors in ISO-F for DN 63 - 160mm (2½” - 6”) as well as ISO-F and ISO-K flange connectors for DN 250mm (10”). Ports for roughing (by-pass), venting or gauges can be integrated.   

The sealing material for the bonnet and plate seal is FKM Viton®.


Key features of the 21.0 FV Butterfly Valve

Features:

  • Compact design
  • Operational under differential pressure
  • Reliable operation
  • Low maintenance

Benefits:

  • Small footprint
  • High up-time
  • Low cost of operation
Technical data
Sizes     DN 63 (2½"), DN 100 (4"), DN 160 (6"), DN 250 (10")
Actuator Pneumatic   Double acting
  Manual   With Turning Lever
Body Material     Stainless Steel
Feedthrough     Rotary
Standard Flanges   DN 63 – 160 ISO-F
    DN 250 ISO-F, ISO-K
Leak Rate Valve Body   < 1 × 10-9 mbar ls-1
  Valve Seat Manual Actuator   < 5 × 10-9 mbar ls-1
  Valve Seat Pneumatic Actuator   < 1 × 10-9 mbar ls-1
Pressure Range Manual Actuator DN 63 100 1 × 10-8 mbar to 4 bar (abs)
    DN 160 1 × 10-8 mbar to 1.3 bar (abs)
  Pneumatic Actuator DN 63 250 1 × 10-8 mbar to 1.3 bar (abs)
Differential Pressure on the Plate Manual Actuator DN 63 250 ≤ 4 bar
    DN 160 ≤ 1.3 bar
  Pneumatic Actuator DN 63 250 ≤ 1.3 bar
Differential Pressure at Opening     ≤ 1.3 bar
Cycles until first Service Manual Actuator DN 63 – 160 100 000
  Pneumatic Actuator DN 63, 250 1 Million
    DN 100, 160 1.5 Million
Temperature Valve Body   ≤ 150 °C
  Actuator   ≤ 80 °C
  Solenoid Valve   ≤ 50 °C
  Position Indicator   ≤ 80 °C
Material Valve Body, Plate, Shaft   AISI 304 (1.4301)
Seal Bonnet, Plate   FKM (Viton®)
Mounting Position     Any
Solenoid Valve     24 VDC, 5.7 W, normally closed (NC)
(others on request)
Position Indicator: Contact Rating Voltage   ≤ 50 VAC / 5 – 30 VDC
  Current   0.1 A

 

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