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Double Eccentric Butterfly Valve Meaning:

Double Eccentric Butterfly Valves are also known as High performance valves. The stem in this valve is mounted slightly out of the pipeline centre and also behind the disc seat. The retaining ring on double eccentric butterfly valves is attached to the valve using fixed socket bolts. The sealing surface between the valve and the pipe flange is reduced as a result, increasing the chance of leakage.

Features of Double Eccentric Butterfly Valve: 

Because of the tilted disc, it has a longer service life. After a few degrees of opening, the stress on the disc is relieved, reducing disc seal wear. Furthermore, the design minimises the sealing's compression, resulting in reduced operating torques.

-Connection between the disc and the shaft that is safe. A key and a keyway are used to connect the disc and shaft. To eliminate fluttering caused by flow velocity and necessary play in the key and keyway connection, two set screws are utilised to secure the key. The disc is locked in the large dimensions with two stainless steel drive dowels, with a key and keyway as a backup.

-There are two types of seats available. A machined and epoxy-coated ductile iron seat is built into the body in the integral seat design. The stainless steel seat features a removable stainless steel seat ring that is sealed with an O-ring to prevent leaks behind the seat ring.

-Optimised disc seal for optimal performance. The disc seal is shaped to keep the fixation in place, resulting in a highly reliable performance. Because of the outstanding rubber quality, the amount of rubber used can be reduced, resulting in low closing torques. DVGW, KIWA, and WRAS have all approved EPDM sealing.

Double Eccentric Butterfly Valve uses:

  • Resistant seal wear is reduced, and the seal is completely sealed.
  •  Disc sealing compression is kept to a minimum.
  • Cavitation sensitivity has been reduced.
  • Low loss of pressure.
  • Operating torque is low.
  • Bi-directional flow is possible.
  • Low-maintenance.
  • Because of the lighter weight, it is easier to handle.

Double Eccentric Wafer Type Butterfly Valve:


Available materials: Ductile Iron, Cast Iron, WCB, WC6, LCC, LCB, WCC, SS304, SS316, F55

Size: 2″ to 72″

Class: 150 to 300

Nominal Pressure: PN6 to PN25

Ends: Lug, Wafer, Flanged

Operations: Lever Operated, Gear operated, Electric and Pneumatic Actuated.

Valvesonly is a leading and reputed Double Eccentric Butterfly valve manufacturer in USA. We have qualified professionals and experienced engineers to provide our clients with high quality and cost-effective products. Having an engineering-based team means we can understand the technical needs of our clients better. We believe in continuous improvements and innovation in our products to keep ourselves competent in the market. Our motive is to supply defect free valves to our customers. Our valves are specially designed to meet the needs of various industries.

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