KG4

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Description

Lug type soft-seated butterfly valve KG 4

  • Lug type soft-seated butterfly valve
  • Centric design
  • For installation between flanges
  • DIN EN 1092-1, PN 10/16, ANSI 150 lbs
  • One-piece body with threaded lugs, suitable for dead-end service
  • Exchangeable seat
  • DN 50 – DN 300

GEFA-MULTITOP Automation system - exchangeable flange for direct mounting of actuators

Approvals

           

  • CE identification complies with the safety standards of the

    European pressure equipment directive PED 97/23/EC

  • GOST-R Certificate for the Russian Federation

  • Pressure test:

    DIN EN12266-1, P10/P11/P12-A

    DIN 3230,T3 – BA/BO-1, DIN3230,T5,T6

  • Approvals:

    Germanischer Lloyd, Lloyd´s Register of Shipping, Det Norske Veritas (DNV)

Product features

On the numbered markings you receive further information.

1. Automation

Automation system GEFA-MULTITOP

  • Standard flange acc. to DIN 3337
  • Direct mounting of actuator without interruption of the stem
  • Variable and exchangeable for any actuator size
  • Actuator protection against leakage

2. Bearing

With O-ring seals against the atmosphere

3. Two-piece anti-blow out stem

Provides stable bearing of the disc, therefore the seat is easy to replace

4. Primary seal

Integrated in the seat, causes resistant sealing to the outside, additional to that the labyrinth design provides sealing towards the stem.

5. Body with centering lugs

For clamping between flanges For application in aggressive environment

6. Valve disc

High all-round finish

7. Seat ring

Multifunctional seal element, easy to replace, maintenance free, long service life, reliable sealing in the seat, to the flanges and the stem gate; safe interlock in the dovetail, embedded in the body without edge protruding over the flange area

8. Seat tightness

Due to the special design of the disc sealing an absolute seat tightness up to 12 bar is achieved

9. Rational and safe

The cylindrical screws fix the mounting flange without transferring torques (driving torques)

10. Guarantee a free of play connection

  • The clamping sleeves transfer the driving torque and guarantee a play-free connection between mounting flange and the body

Torque chart

 

 

Application 1

Application 2

DN

NPS

kvs

Δp

5bar

(Nm)

Δp

10bar

(Nm)

Δp

16bar

(Nm)

Δp

5bar

(Nm)

Δp

10bar

(Nm)

Δp

16bar

(Nm)

50

2

210

20

24

25

28

29

30

65

340

25

26

29

33

34

36

80

3

610

30

34

39

39

44

47

100

4

820

44

49

54

59

64

69

125

5

1200

64

69

79

83

98

112

150

6

1800

88

108

118

123

137

157

200

8

3200

157

196

216

206

235

275

250

10

5300

235

294

334

314

363

412

300

12

8000

343

441

490

441

530

589

350

14

9500

490

638

736

628

755

863

400

16

12000

638

883

1030

834

1030

1170

500

20

19000

1128

1570

1864

1324

1864

2139

Application 1
For standard use without media flow

Application 2
For complicated media requirements, such as acids and dry service

Product advantages

 

Very maintenance friendly
The two-piece blow-out proof stem provides a stable bearing of the valve disc and therefore easy replacement of the seat.

Perfect for economic and safe use in industry
Economic equipment thanks to the one-piece body design

Valve disc with high all-roand finish

Absolutely maintenance-free seal system
The O-ring prevents foreign substances from penetrating from the outside

Long service life
due to high-quality seat material

Excellent bubble-tightness
Multi-functional sealing element easily exchangeable, maintenance-free, long service life, reliable sealing in the seat, to the flanges and at the stem bore; safe locking in dovetail, embedded in the body without edge projection to the flange surface

Absolute seat tightness is achieved up to 12 bar thanks to the special shaping of the sealing surface of the valve disc.

Economic and easy mounting of all actuator types
The GEFA-MULTITOP automation system allows direct mounting of all actuators with the interface according to DIN 3337

Application range

 

 

Industries and applications

  • Sewage plants
  • Waste water treatment plants
  • Shipbuilding
  • Paper and pulp industry
  • Coal mining, Brown coal strip mining
  • Chemical plants
  • Pumping stations, Storage basin
  • Coal-fired power plants
  • Sugar industry
  • Food industry
  • Bitumen manufacturing and subsequent processing

Technical Data

 

Nominal sizes: DN 50 – DN 300
Lug type butterfly valve for installation between flanges DIN EN 1092-1, PN 10/16, ANSI 150 lbs
One-piece body
Temperature range: -30 °C to +200 °C depending on the seat material
Control range: 10° - 90° opening angle 15° - 70° linear characteristic
Bubble-tight at full differential pressure, dead-end service up to a differential pressure of 10 bar depending on the working temperature
Face-to-face dimension: EN 558-1 line 20 DIN 3202-K1
Top flange: DIN 3337 – ISO 5211 GEFA-MULTITOP Automation system

Materials

 

Body:

Material:

Code:

Grey cast iron GG 25

22

Ductile iron GGG 40

23

   

Disc:

Material:

Code:

Stainless steel 1.4408

66

   

Stem:

Material:

Code:

Stainless steel 1.4021

63

 

Seat ring:

Material:

Code:

CSM

H

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