
Features And Benefits
This double excentric highperformance butterfly valve provides important advantages:
- 360° sealing seat area
- long life of seat due to early disengagement of the disc from seat
- reduced torque figures compared to conventional butterfly valve designs
- a large diameter shaft which provides a direct and distortion free power transmission to disc and therefore excellent control characteristics (low hysteresis)
For applications involving flammable media, the dual component seat offers both superior sealing and fire tested security. It provides tightness according to leak rate A (EN12266-1) up to 300°C.


Technical Details
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Design Features - Maintenance-free stem packing, Double eccentric disc mounting, PTFE seat ring (patented), Screwless retainer (patented), Flange gasket sealing face uninterrupted by retainer screws allows the use of all standard gasket designs, Actuator mounting as per DIN ISO 5211 optional, Integrated travel-stop optional
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Materials Of Construction - Standard: 1.0619, 1.4408; A216 Gr. WCB, A351 Gr. CF8M, Optional materials upon request
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Size Range - DN 50 – 2800 / NPS 3“ – 108“
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Pressure Ratings -PN 10, 16, 25, 40, 60, 100; ASME Class 150, 300, 600
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Temperature Range - PTFE-Seat: 203 K bis 477 K (-70°C to +204°C), PTFE-Seat reinforced: 203 K bis 505 K (-70°C to +232°C)
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Body Configuration - Lug design, Wafer design
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Special Options - Fire-Safe, Leak control, Oil-free/Grease-free (various designs as per customer request), Oxygen application, Chlorine and phosgene applications, Control seat (A, B)
Applications
Industrial branches:
- Chemical and petrochemical industry
- Oil and gas
- Air separation
- Chlorine liquefaction
- Power generation
- Energy
- Offshore platforms
- Pulp & paper
- Desalination
- Steam
- Corn processing
- HVAC
Processes:
- Various chemicals
- Hot gases
- Chlorine gas
- Methanol
- Propane
- Liquid nitrogen
- Oxygen
- Carbon monoxide & carbon dioxide
- Sewage
- Recausticizing
- White water
- River water
- Cooked starch
- Scrubber effluent
- Fly and bottom ash
- Gasoline
- Tail gases
- Off gases
- Sour gas

Literature
Flyer
Brochure
Datasheet
Manual
