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Alfa Laval LKB pneumatically operated air open / air 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.

Filter
Articlenr. Description Dimensions Material type Connection Elastomer Stock
25124704AL
LKB W/W 1" AO/AC HNBR 304
Alfa Laval butterfly valve LKB Weld / Weld 1" (25,40) 1.4307 (304L) HNBR Including LKLA actuator Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: no
1" (ø 25,4 mm)
304 (L)
Weld / Weld
HNBR
25124704ALT
LKB W/W 1" AO/AC HNBR 304
Alfa Laval butterfly valve LKB Weld / Weld 1" (25,40) 1.4307 (304L) HNBR Including LKLA-T actuator Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: yes
1" (ø 25,4 mm)
304 (L)
Weld / Weld
HNBR
25124705AL
LKB W/W DN25 AO/AC HNBR 304
Alfa Laval butterfly valve LKB-2 Weld / Weld DN25 (29,00) 1.4307 (304L) HNBR Including LKLA actuator Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: no
DN25 (ø 29 mm)
304 (L)
Weld / Weld
HNBR
25124705ALT
LKB W/W DN25 AO/AC HNBR 304
Alfa Laval butterfly valve LKB-2 Weld / Weld DN25 (29,00) 1.4307 (304L) HNBR Including LKLA-T actuator Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: yes
DN25 (ø 29 mm)
304 (L)
Weld / Weld
HNBR
25124708AL
LKB W/W 1,5" AO/AC HNBR 304
Alfa Laval butterfly valve LKB Weld / Weld 1,5" (38,10) 1.4307 (304L) HNBR Including LKLA actuator Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: no
1,5" (ø 38,1 mm)
304 (L)
Weld / Weld
HNBR
25124708ALT
LKB W/W 1,5" AO/AC HNBR 304
Alfa Laval butterfly valve LKB Weld / Weld 1,5" (38,10) 1.4307 (304L) HNBR Including LKLA-T actuator Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: yes
1,5" (ø 38,1 mm)
304 (L)
Weld / Weld
HNBR
25124709AL
LKB W/W DN40 AO/AC HNBR 304
Alfa Laval butterfly valve LKB-2 Weld / Weld DN40 (41,00) 1.4307 (304L) HNBR Including LKLA actuator Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: no
DN40 (ø 41 mm)
304 (L)
Weld / Weld
HNBR
25124709ALT
LKB W/W DN40 AO/AC HNBR 304
Alfa Laval butterfly valve LKB-2 Weld / Weld DN40 (41,00) 1.4307 (304L) HNBR Including LKLA-T actuator Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: yes
DN40 (ø 41 mm)
304 (L)
Weld / Weld
HNBR
25124710AL
LKB W/W 2" AO/AC HNBR 304
Alfa Laval butterfly valve LKB Weld / Weld 2" (50,80) 1.4307 (304L) HNBR Including LKLA actuator Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: no
2" (ø 50,8 mm)
304 (L)
Weld / Weld
HNBR
25124710ALT
LKB W/W 2" AO/AC HNBR 304
Alfa Laval butterfly valve LKB Weld / Weld 2" (50,80) 1.4307 (304L) HNBR Including LKLA-T actuator Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: yes
2" (ø 50,8 mm)
304 (L)
Weld / Weld
HNBR
25124711AL
LKB W/W DN50 AO/AC HNBR 304
Alfa Laval butterfly valve LKB-2 Weld / Weld DN50 (53,00) 1.4307 (304L) HNBR Including LKLA actuator Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: no
DN50 (ø 53 mm)
304 (L)
Weld / Weld
HNBR
25124711ALT
LKB W/W DN50 AO/AC HNBR 304
Alfa Laval butterfly valve LKB-2 Weld / Weld DN50 (53,00) 1.4307 (304L) HNBR Including LKLA-T actuator Air open / air closed 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
27200255AL
Spare part Alfa Laval valve service kit FPM lkb-f din nw25
27200261AL
Spare part Alfa Laval valve service kit FPM lkb-f din nw50
27500347AL
Spare part Alfa Laval valve service kit HNBR lkb-2 dn80
27200257AL
Spare part Alfa Laval valve service kit FPM lkb-f din nw32
27500292AL
Spare part Alfa Laval valve service kit EPDM lkb-2 dn100
27200230AL
Spare part Alfa Laval valve service kit q lkb-f din nw25
27833157AL
Act LKLA-T A/A 133mm+kopp DN150
Alfa Laval actuator LKLA-T Ø133mm Butterfly valve LKB(F) DN150 Including coupling Air open / air closed Stainless steel 304 Prepared for indication: no Prepared for control unit: yes
27100924AL
Spare part Alfa Laval valve seal ring HNBR 25 lkb-f
27500240AL
Spare part Alfa Laval valve service kit silicone lkb-2 din NW80
27500236AL
Spare part Alfa Laval valve service kit silicone lkb-2 din NW50
27500283AL
Servicekit butterfly valve LKB-2 1 1/2" EPDM
27200243AL
Servicekit butterfly valve LKB-F NW125 MVQ (Silicone)
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