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Electric Actuated Double Eccentric Butterfly Valve
Eccentric Butterfly Valve
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Electric Actuated Double Eccentric Butterfly Valve

Double eccentric butterfly valve with electric actuator, body and disc in ductile iron, epoxy coated, EPDM sealing, compliant with EN593. The double eccentric design allows sealing surfaces to separate rapidly during opening and closing, ensuring friction‑free operation, low torque, and minimal wear. The actuator is factory‑calibrated for plug‑and‑play installation. Specifically designed for water systems, it is suitable for automatic control applications in water supply and drainage, wastewater treatment, and circulating cooling.

  • Series KF-SPD-F
  • Type Double Eccentric Resilient Seated
  • Size DN100-2000mm, NPS 4"-80"
  • Design Standard EN 593,
  • Pressure Rating PN10/PN16/PN25
  • Certificate ISO, CE, WRAS, ACS
  • Sample Available
  • Service OEM & ODM

Features

Operation Cycles

Over 50,000 times

Leakage Level

Bubbles-tight sealing with no leakage

Double Eccentric Design

Reduce valve seat wear and improve service life. 

Valve stem anti blowout design

Reduce maintenance difficulty and cost

Bidirectional Sealing

Any installation position

Low Flow Resistance

Improve fluid efficiency and reduce energy consumption

Coating Grade

Conventional and special conditions of C1-C5 & CX

Certificates

ISO9001, CE, WRAS, ACS

Specifications

Design Standard

EN 593

Top Flange Standard

ISO 5211

End Flange Standard

EN1092 PN10 / PN16 / PN25

Face to Face Dimension

EN558-1 Series 13/14

Testing Standard

API 598, EN12266

Temperature

-20℃~80℃(depends on the sealing material)

Body Material

Ductile Iron EN GJS-400-15 / EN GJS-500-07

Disc Material

Ductile Iron, Stainless Steel

Shaft Material

Stainless Steel

Seat Material

EPDM, WRAS EPDM

Ring Material

Carbon Steel, Stainless Steel

Operator

Bare Shaft, Gearbox, Pneumatic, Electric Actuator

Dimension

13

Size

L

T / Ф

PN10

PN16

PN25

Top Flange

Series 13

Series 14

Ф D

n - Ф d

Ф D

n - Ф d

Ф D

n - Ф d

DN100

127

190

11*11

180

8-19

180

8-19

F07

DN125

140

200

14*14

210

8-19

210

8-19

F07

DN150

140

210

14*14

240

8-23

240

8-23

F07

DN200

152

230

17*17

295

8-23

295

12-23

F10

DN250

165

250

19*19

350

12-23

355

12-28

F10

DN300

178

270

22*22

400

12-23

410

12-28

430

12-28

F10

DN350

190

290

22*22

460

16-23

470

16-28

490

16-28

F10

DN400

216

310

27*27

515

16-28

525

16-31

550

16-31

F14

DN450

222

330

27*27

565

20-28

585

20-31

600

20-31

F14

DN500

229

350

36*36

620

20-28

650

20-34

660

20-34

F14

DN600

267

390

46*46

725

20-31

770

20-37

770

20-37

F16

DN700

292

430

63.35

840

24-31

840

24-37

875

24-37

F25

DN800

318

470

63.35

950

24-34

950

24-41

990

24-41

F25

DN900

330

510

75

1050

28-34

1050

28-41

1090

28-41

F25

DN1000

410

550

85

1160

28-37

1170

28-44

1210

28-44

F25

DN1200

470

630

105

1380

32-41

1390

32-50

1420

32-50

F30

Product display

In water treatment and various industrial scenarios, flanged butterfly valves serve as key components in pipelines. Flanged ductile iron eccentric butterfly valves integrate high-strength ductile iron valve bodies and discs, replaceable rubber O-rings, an eccentric design, and a flanged structure for pipeline connection, ensuring the stable operation of the pipeline system.

Ductile iron double eccentric butterfly valves feature an eccentric design where the valve stem is offset from both the centerline of the sealing surface and the centerline of the pipeline and valve. When the double eccentric butterfly valve is opened, the disc can quickly disengage from the seat, which largely eliminates unnecessary excessive extrusion and scraping between the disc and the seat, reduces opening torque, minimizes wear, and extends the service life of the seat. The internal components of the butterfly valve are made of different materials according to the customer’s specific operating conditions.

As accurate, durable, and efficient solutions, ductile iron double eccentric flanged butterfly valves are widely used for fluid shut-off in industrial pipelines such as metallurgy, power generation, petrochemicals, water supply and drainage, water treatment, and municipal construction. Compared with centerline flanged butterfly valves, they offer higher pressure-bearing capacity and longer service life, making them an ideal choice for the water treatment field.

Our electric actuator double eccentric butterfly valves are available in a variety of sizes, pressure ratings, and flange types to suit different application scenarios.

KEFA VALVE specializes in the design, manufacture, and supply of industrial valves, covering butterfly valves and various other types of valves. We are committed to providing sustainable valve solutions to protect pipeline systems and reduce operating costs. We can also offer customized solutions to meet specific requirements.

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RAQ

What is a double eccentric butterfly valve? +
Double eccentric flange butterfly valve is a flange‑end valve with a double‑eccentric design, in which the valve stem axis is offset from both the disc center and the body center, creating two eccentric offsets. This design allows the disc to disengage from the seat with only a small rotation angle when opening, greatly reducing excessive compression and friction on the sealing surfaces, thereby effectively lowering operating torque and extending service life.
What materials are available for double eccentric butterfly valves? +
They are commonly available in ductile iron, with seat options like EPDM, NBR, or FKM depending on the application.
What are the advantages of double eccentric butterfly valves? +
The key advantage of the double eccentric butterfly valve lies in its double‑offset geometry, which allows the disc to disengage from the seat within only a few degrees of opening, significantly reducing seal friction and operating torque.
What applications are these valves typically used in? +
Widely used in water supply and drainage, wastewater treatment, power plant circulating cooling, municipal networks, and industrial water systems—particularly in applications requiring remote automatic control and frequent operation
Is this butterfly valve suitable for use on water? +
Yes, this butterfly valve is fully suitable for use on water. It features EPDM sealing, epoxy coating, and is approved for drinking water by WRAS, with the double‑eccentric design ensuring low torque and long‑term reliability in water supply, treatment, and circulation systems. It is specifically engineered for water applications, including potable water, wastewater, and cooling water.
Electric Actuated Double Eccentric Butterfly Valve

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