KG7
Description
Lug type soft-seated butterfly valve KG 7
- Lug type soft-seated butterfly valve
- Centric design
- For installation between flanges
- DIN EN 1092-1, PN 10/16, ANSI 150 lbs
- Two-piece body with lugs, one-piece disc/stem
- DN 50 – DN 300
- Suitable for dead-end service up to 10 bar, depending on the working temperature.
GEFA-MULTITOP Automation systeme - exchangeable flange for direct mounting of actuators
Approvals
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Controlled manufacturing through AD 2000 - WO/TRD 100
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CE identification complies with the safety standards of the
European pressure equipment directive PED 97/23/EC
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GOST-R Certificate for the Russian Federation
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Pressure test:
DIN EN12266-1, P10/P11/P12-A
DIN 3230,T3 – BA/BO-1, DIN3230,T5,T6
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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 design3. 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 area6. Disc / Stem
One-piece design, absolutely free of play, large free cross-section, minimal pressure loss7. 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
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Application 1 |
Application 2 |
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|
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 |
2½ |
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
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 GEFA-MULTITOP automation system allows direct mounting of all actuators with the interface according to DIN 3337
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
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
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:
ISO 5211 – DIN 3337
GEFA-MULTITOP Automation system
Materials
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