KG9

Print
Description

Wafer type KG 9

  • Soft-seated butterfly valve
  • Centric design, for installation between flanges
  • DIN EN 1092-1, PN 10/16, ANSI 150 lbs
  • Two-piece body, self-centering, one-piece disc/stem
  • DN 50 – DN 300

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

GEFA industrial valves / valves - We also deliver butterfly valves, control valves, valves, rupture discs, valves as slide valves, knife gate valves and double eccentric valves, triple eccentric valves, ball valves, flanged ball valves, 3-piece ball valves, diaphragm pumps, PTFE-lined butterfly valves, Valves, throttle valves, return valves, ball segment valves, tire valves

Approvals

               

  • Production monitored by TÜV WO/TRD 100

  • TA-Luft – Stem sealing based on the new VDI 2440 directive

  • CE safety requirements of the European pressure equipment directive PED 97/23/EC are met

  • 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 system GEFA-MULTITOP

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

2. Two-piece body

Standard overall length; very service friendly, simple exchange of internal parts possible because of the two-piece body design

3. Bearing

including O-ring

4. Primary seal

Has a labyrinth layout and is integrated in the seat. This construction guarantees the cavity-free and pressure-resistant sealing to the outside

5. Seat

multifunctional seal element, easy to replace, maintenance free, long service life, tight shut-off in the seat, to the flanges and the shaft. Based on the construction (dovetail) the seat is safely locked between body and flanges, embedded in the body without edge protruding over the flange area

6. Disc / Stem

One-piece design, absolutely free of play, large free cross-section, minimal pressure loss

7. Rational and safe

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

8. Guarantee a free of play connection

  • The clamping sleeves transfer the driving torque and guarantee a free of play 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

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:
easy and quick replacement of the seat due to the two-piece body, therefore low maintenance costs

Excellent control behaviour of the process flows without hysteresis
with firm, play-free disc/stem connection and centric valve disc

Valve design cavity-free
makes simple sterile cleaning possible and choice of body material independent from the medium

Long service life
seals tightly at full differential pressure even with very high switching cycles

Excellent bubble-tightness
Body lined completely with elastomer with the seat-ring as a multi-functional sealing element, easily exchangeable, maintenance-free, with 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

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

Universal range of application
for almost all media, from use with acids to the sensitive food and pharmaceutical industrys

Economic and easy assembly of all actuator types
The standard top flange according to DIN/ISO 5211 makes it possible to mount all the common actuator types    

Application Range

Industries and applications

  • Water / sewage
  • Engineering
  • Food industry
  • Chemical and petrochemical industry
  • Colouring, Varnish, Dyeing factories

Technical data

Nominal sizes:
DN 50 – DN 300

Wafer type butterfly valve for installation between
flanges DIN EN 1092-1, PN 10/16, ANSI 150 lbs

Two-piece body
self-centering, one-piece disc/stem

Temperature range:
-30 °C to +200 °C
depending on the seat material

Control range:
20° - 60° opening angle linear

Bubble-tight
at full differential pressure

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:

Stainless steel 1.4301/1.4308

63

Stainless steel 1.4571/1.4408

66

Grey cast iron GG 25

22

Grey cast iron, Gotekplast-coated

72

Ductile iron GGG 40.3

24

Cast steel GS-C25

44

   

Disc:

Material:

Code:

Alloy C

93

Alloy C 22

92

Bronze

13

E-CTFE-coated

78

Stainless steel 1.4581/1.4408

66

Stainless steel, polished

31

EPDM-coated

79

PTFE-lined

77

Ductile iron GGG 40

23

Titanium

94

   

Seat ring:

Material:

Code:

CSM

H

EPDM

E

EPDM white

Ew

FPM

 

 

Datenblätter im Downloadbereich