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K19

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Description

Wafer type Soft-seated butterfly valve K 19

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)

Product features K19

On the numbered markings you receive further information.

1. Standard flange connection

acc. to ISO 5211/DIN 3337 for easy mounting of all types of actuators

2. Bearing

with secondary seal

3. Primary seal

the seal has a labyrinth layout and is integrated in the seat. This design guarantees the pressure-resistant sealing to the outside.

4. Seat

multifunctional sealing element, maintenance-free, having a long service life. Based on the construction (dovetail) the seat is safely locked between body and flanges

5. Disc and stem

One-piece design - large free cross-section, low pressure loss

6. Two-piece body

length acc. to DIN 3202 K1

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)
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
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

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 350 – DN 500

Lug 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:
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

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

V

MVQ (silicone)

S

NBR

B

PU (Polyurepan)

PU

 

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