K11

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Description

Butterfly valve with stainless steel cast type K 11

  • Wafer type soft-seated butterfly valve
  • Centric design
  • For installation between flanges
  • EN 1092-1, PN 10/16, ANSI 150, BS, JiS
  • Two-piece body made of stainless steel, self-centering, one-piece disc/stem
  • DN 25- DN 150
              

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

Approvals

  • Controlled manufacturing through AD 2000 - WO/TRD 100

  • 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)  

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)

25

1

53

7

9

10

9

10

12

32

53

7

9

10

9

10

12

40

125

10

12

13

13

14

15

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

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 25 – DN 150

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 +220 °C
depending on the seat material

Control range:
10° -90° opening angle
15° - 70° linear characteristic

Bubble tight
at full differential pressure
(up to 10 bar)

Face-to-face dimension:
EN 558-1 line 20
DIN 3202-K1

Top flange:
DIN 3337 - ISO 5211

Material

Body:

Material:

Code:

Stainless steel 1.4408

66

   

Disc:

Material:

Code:

Alloy C

93

Stainless steel 1.4581/1.4408

66

Stainless steel, polished

31

   

Seat ring:

Material:

Code:

CSM

H

EPDM

E

EPDM white

Ew

FPM

V

MVQ (silicone)

S

NBR

B

PU (Polyurepan)

PU

 

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