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Alfa Laval LKB manually operated

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
25124204AL
LKB W/W 1" HO HNBR 304
Alfa Laval butterfly valve LKB Weld / Weld 1" (25,40) 1.4307 (304L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
1" (ø 25,4 mm)
304 (L)
Weld / Weld
HNBR
25124205AL
LKB W/W DN25 HO HNBR 304
Alfa Laval butterfly valve LKB-2 Weld / Weld DN25 (29,00) 1.4307 (304L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
DN25 (ø 29 mm)
304 (L)
Weld / Weld
HNBR
25124208AL
LKB W/W 1,5" HO HNBR 304
Alfa Laval butterfly valve LKB Weld / Weld 1,5" (38,10) 1.4307 (304L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
1,5" (ø 38,1 mm)
304 (L)
Weld / Weld
HNBR
25124209AL
LKB W/W DN40 HO HNBR 304
Alfa Laval butterfly valve LKB-2 Weld / Weld DN40 (41,00) 1.4307 (304L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
DN40 (ø 41 mm)
304 (L)
Weld / Weld
HNBR
25124210AL
LKB W/W 2" HO HNBR 304
Alfa Laval butterfly valve LKB Weld / Weld 2" (50,80) 1.4307 (304L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
2" (ø 50,8 mm)
304 (L)
Weld / Weld
HNBR
25124211AL
LKB W/W DN50 HO HNBR 304
Alfa Laval butterfly valve LKB-2 Weld / Weld DN50 (53,00) 1.4307 (304L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
DN50 (ø 53 mm)
304 (L)
Weld / Weld
HNBR
25124212AL
LKB W/W 2,5" HO HNBR 304
Alfa Laval butterfly valve LKB Weld / Weld 2,5" (63,50) 1.4307 (304L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
2,5" (ø 63,5 mm)
304 (L)
Weld / Weld
HNBR
25124213AL
LKB W/W DN65 HO HNBR 304
Alfa Laval butterfly valve LKB-2 Weld / Weld DN65 (70,00) 1.4307 (304L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
DN65 (ø 70 mm)
304 (L)
Weld / Weld
HNBR
25124214AL
LKB W/W 3" HO HNBR 304
Alfa Laval butterfly valve LKB Weld / Weld 3" (76,10) 1.4307 (304L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
3" (ø 76,1 mm)
304 (L)
Weld / Weld
HNBR
25124215AL
LKB W/W DN80 HO HNBR 304
Alfa Laval butterfly valve LKB-2 Weld / Weld DN80 (85,00) 1.4307 (304L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
DN80 (ø 85 mm)
304 (L)
Weld / Weld
HNBR
25128204AL
LKB W/W 1" HO HNBR 316
Alfa Laval butterfly valve LKB Weld / Weld 1" (25,40) 1.4404 (316L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
1" (ø 25,4 mm)
316 (L)
Weld / Weld
HNBR
25128205AL
LKB W/W DN25 HO HNBR 316
Alfa Laval butterfly valve LKB-2 Weld / Weld DN25 (29,00) 1.4404 (316L) HNBR Including standard handle Stainless steel sleeve, plastic ball Prepared for indication: no
DN25 (ø 29 mm)
316 (L)
Weld / Weld
HNBR
Articlenr. Description Dimension Elastomer Stock
27138114AL
Spare part Alfa Laval valve lkb disc iso 76mm 316l
27100260AL
Spare part Alfa Laval valve seal ring FPM lkb 51-dn50
27500288AL
Spare part Alfa Laval valve service kit EPDM lkb-2 din NW65
27200342AL
Spare part Alfa Laval valve service kit HNBR lkb-f iso 51
27500269AL
Spare part Alfa Laval valve service kit FPM lkb-2 dn125
27100293AL
Spare part Alfa Laval valve seal ring EPDM lkb 101.6-dn100
27100486AL
Spare part Alfa Laval valve seal ring pfa/EPDM lkb-2 dn50
27100243AL
Butterfly valve gasket LKB 4" MVQ (Sil.)
27100934AL
Spare part Alfa Laval valve seal ring HNBR 76 lkb-f
27134163AL
Mount br LKB(F) DN65
Alfa Laval part for LKB(F) valve Bracket LKLA / LKLA-T Ø85 DN65 Stainless steel 304
27200239AL
Spare part Alfa Laval valve service kit q lkb-f iso 76
27200264AL
Spare part Alfa Laval valve service kit FPM lkb-f iso 76
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