Alfa Laval LKB pneumatically operated air open / spring closed
Applying the Alfa Laval LKB Butterfly Valve
The sanitary Alfa Laval LKB Butterfly Valve is characterized by a specific seal and the relatively compact air motor. This seal makes the valve suitable for use in full vacuum conditions. The Alfa Laval butterfly valves are available in:
- Inch dimensions (type LKB)
- DIN dimensions (type LKB-2)
- Flanged version (type LKB-F)
All butterfly valves can optionally be prepared for mounting of M12 or M18 proximity switches. Moreover air motors can optionally be provided with an output shaft (type LKLA-T), which makes mounting a ThinkTop possible. The valve is available in both 304 and 316L stainless steel. It can be provided with MVQ, EPDM, HNBR, and FPM sealing material.
In addition to these models, Alfa Laval two versions for special circumstances:
- LKB LP (Low Pressure)
- LKB UP (Ultra Pure)
The LP version is a low pressure butterfly valve and the UP version is designed for ultra-hygienic applications such as Bio-and cosmetics industries. This Ultra Pure version comes with the corresponding certificates and internal roughness of 0.5μm DIN / ISO SF1 and 0.38μm or 0.5μm ASME BPE SF4 / SF1.
| Articlenr. | Description | Dimensions | Material type | Connection | Elastomer | Stock |
|---|---|---|---|---|---|---|
|
25124604AL
|
Alfa Laval butterfly valve LKB
Weld / Weld
1" (25,40) 1.4307 (304L)
HNBR
Including LKLA actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: no
|
1" (ø 25,4 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
|
25124604ALT
|
Alfa Laval butterfly valve LKB
Weld / Weld
1" (25,40) 1.4307 (304L)
HNBR
Including LKLA-T actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: yes
|
1" (ø 25,4 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
|
25124605AL
|
Alfa Laval butterfly valve LKB-2
Weld / Weld
DN25 (29,00) 1.4307 (304L)
HNBR
Including LKLA actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: no
|
DN25 (ø 29 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
|
25124605ALT
|
Alfa Laval butterfly valve LKB-2
Weld / Weld
DN25 (29,00) 1.4307 (304L)
HNBR
Including LKLA-T actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: yes
|
DN25 (ø 29 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
|
25124608AL
|
Alfa Laval butterfly valve LKB
Weld / Weld
1,5" (38,10) 1.4307 (304L)
HNBR
Including LKLA actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: no
|
1,5" (ø 38,1 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
|
25124608ALT
|
Alfa Laval butterfly valve LKB
Weld / Weld
1,5" (38,10) 1.4307 (304L)
HNBR
Including LKLA-T actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: yes
|
1,5" (ø 38,1 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
|
25124609AL
|
Alfa Laval butterfly valve LKB-2
Weld / Weld
DN40 (41,00) 1.4307 (304L)
HNBR
Including LKLA actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: no
|
DN40 (ø 41 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
|
25124609ALT
|
Alfa Laval butterfly valve LKB-2
Weld / Weld
DN40 (41,00) 1.4307 (304L)
HNBR
Including LKLA-T actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: yes
|
DN40 (ø 41 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
|
25124610AL
|
Alfa Laval butterfly valve LKB
Weld / Weld
2" (50,80) 1.4307 (304L)
HNBR
Including LKLA actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: no
|
2" (ø 50,8 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
|
25124610ALT
|
Alfa Laval butterfly valve LKB
Weld / Weld
2" (50,80) 1.4307 (304L)
HNBR
Including LKLA-T actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: yes
|
2" (ø 50,8 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
|
25124611AL
|
Alfa Laval butterfly valve LKB-2
Weld / Weld
DN50 (53,00) 1.4307 (304L)
HNBR
Including LKLA actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: no
|
DN50 (ø 53 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
|
25124611ALT
|
Alfa Laval butterfly valve LKB-2
Weld / Weld
DN50 (53,00) 1.4307 (304L)
HNBR
Including LKLA-T actuator
Air closed / Spring open (NO)
Stainless steel 304
Prepared for indication: no
Prepared for control unit: yes
|
DN50 (ø 53 mm)
|
304 (L)
|
Weld / Weld
|
HNBR
|
|
| Articlenr. | Description | Dimension | Elastomer | Stock |
|---|---|---|---|---|
|
27500267AL
|
Spare part Alfa Laval valve
service kit FPM lkb-2 dn100
|
|
|
|
|
27100347AL
|
Spare part Alfa Laval valve
seal ring lkb-2 HNBR dn80
|
|
|
|
|
27100254AL
|
Spare part Alfa Laval valve
seal ring FPM lkb 25-dn25
|
|
|
|
|
27100932AL
|
Spare part Alfa Laval valve
seal ring HNBR 63,5 lkb-f
|
|
|
|
|
27500342AL
|
Spare part Alfa Laval valve
service kit HNBR lkb iso 51
|
|
|
|
|
27100910AL
|
Spare part butterfly valve LKB-F
Flange seal ring 2" MVQ (Silicone)
|
|
|
|
|
27500239AL
|
Spare part Alfa Laval valve
service kit silicone lkb
ISO 76
|
|
|
|
|
27100908AL
|
Spare part butterfly valve LKB-F
Flange seal ring 1.5" MVQ (Silicone)
|
|
|
|
|
AL9612073904
|
Spare part Alfa Laval valve
lkb-2 disc din dn50 316l
*** = 27138111AL
|
|
|
|
|
27830041AL
|
Butterfly valve LKB actuator
Unique Control NC
1"-4"/DN25-100
ASI V3.0, 62 Node
|
|
|
|
|
27100345AL
|
Spare part Alfa Laval valve
seal ring lkb-2 HNBR dn65
|
|
|
|
|
27134109AL
|
Spare part Alfa Laval valve
lkb-2 disc din dn40 304
|
|
|
|
Material |
||
| Product contact parts | W.St. 1.4307 or 1.4404 / AISI 304L or 316L | |
| ID finish | Ra <0.8 μm | |
| Other stainless steel parts | W.St. 1.4307 / AISI 304L | |
| Standard seals | EPDM | |
| Valve seal | T-profile | |
| Flange seal | Own seal (square) | |
| bearing bushes | Yes, upper and under are different | |
| Max. operating pressure | 10 bar (5 bar LP version) | |
| Min. pressure | Vacuum | |
| Max. temperature | Depends on elastomer | |
| Sizes |
Weld / Weld DN25 - DN150 and 1″ t/m 4″ LP version : DN 25 – DN100 |
|
| DIN sizes | DN25 to DN150 | |
| Inch sizes | SMS | |
| ISO sizes | n.a. | |
| Optional seals | EPDM, MVQ (Silicon), FKM (Viton), HNBR and PFA | |
Version |
||
| Connection | Weld, Thread, pointed area / nut, flange and tri-clamp | |
| DIN11851, DIN32676 | ||
| SMS, IDF, DS | ||
| Standard operating | Manual (2 positions, optional 4 positions) | |
| Stepless adjustable | ||
| Manual with position indicator | ||
| Pneumatical operating | Double air or Air/Spring (2 versions) | |
| Required air pressure | 4 to 7 bar | |
| Position indicator | Above or below the actuator through an conversion kit | |
| Options | Drive with positioner | |
| Control head (ASI modul) | ||
| Open / close inidication (CE label) | ||
| Lock-out/tag-out manual operating | ||
| Label | EHEDG EL | |
Maintenance |
||
| Revision/disassembly | Between flange version is in line demountable | |
| The other versions are not demountable | ||
| Special tools necessary | No | |
Uniek |
||
| Manual operating | Manual operating in different versions | |
| Pneumatical operating | Non linear power structure | |
| Unique control driving | ||
