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The Alfa Laval’s butterfly valves that ABS offers are straightforward on/off routing valves with a substantial opening area and low flow resistance. They are an optimal solution in modern processing technology and ideal for use with low and medium-viscosity liquids.

Alfa Laval Valve Automations: Indication Unit, IndiTop, ThinkTop, ThinkTop Basic, ThinkTop D30, GreenTop

DescriptionFeaturesHow It WorksDocumentation

Clamp butterfly valveClamp butterfly valve 

Clamp butterfly valves (CBFV) are on/off routing valves designed for manual or automatic operation in sanitary stainless steel fluid handling systems. Easy to install, operate and maintain, the modular hygienic valves deliver more uptime at reduced costs.

Related Industries:

Agriculture processing, Food Processing, Beverage Processing, Biotechnology, Dairy Processing, Pharmaceutical Production, Personal and Home Care

Full range of sanitary clamp butterfly valves

The Alfa Laval clamp butterfly valve (CBFV) range meets the full spectrum of requirements at working pressures from full vacuum to 10 bar and at temperatures ranging from -10°C to +95°C. Made of 304L or 316L stainless steel, it has an internal surface finish of Ra ? 0.8 ?m for hygienic performance and cleanability. The valve comes with EHEDG certification.

Designed for use in a wide range of stainless steel fluid handling systems, these valves are compatible with the Alfa Laval LKB butterfly valves and can be built to comply with virtually any installation standard. The clamp butterfly valve is available in six sizes in respectively DIN (DN25 to DN100) and ISO (1” to 4”).

More production uptime, less downtime

The clamp butterfly valve features a practical in-line design that ensures reliable and versatile performance. Assembly and installation is easy. Thanks to the patented clamp design, it is possible to retract the seal sideways when the valve is welded into the pipe system. It simply requires a small retraction of the pipes. This makes installation simpler with fewer connections and enables faster seal replacement than conventional butterfly valves.

The CBFV is perfect for applications where frequent maintenance is required. Maintenance is made easy by the counterhold nuts, which make it possible to disassemble the valve using only an Allen key. No spanner is required.

Reduced inventory costs

All clamp butterfly valve accessories, such as seals and actuations, are interchangeable with those of the LKB butterfly valve. This reduces the need for a large spare part inventory. The width of the valve clamp end, for instance, is equal to the width of the LKB butterfly valve flange; this enables the same handles and actuators to be used for both valves. Similarly, the E dimension of the CBFV is equal to E dimension on the LKB butterfly valve to ensure that these two valves can use the same disc and upper bushing.

Manual or automatic operation

The clamp butterfly valve can be operated either in manual mode or automatic mode. For manual operation, the valve can be complemented with various handles, including a handle capable of a full 360-degreerotation into any position and a multi-position lockable handle for manual operation. Or it can be equipped with an Alfa Laval pneumatic actuator and ThinkTop valve sensing and control unit for automatic operation.

Compatibility with existing systems

With its 360-degree rotation of the actuator, the clamp butterfly valve has very low space requirements and easily fits into existing stainless steel fluid handling systems, especially those where LKB butterfly valves are already in use. Because the modular CBFV is compatible with the LKB butterfly valve, all seals, discs, bushings, handles and valve sensing and control units are interchangeable.

 

Construction

The Alfa Laval clamp butterfly valve (CBFV) consists of two valve body halves, valve disc, bushings for the stem and seal ring. The valve is assembled by means of two clamps on the ferrule. One actuator size covers all valve sizes and is available in two versions, LKLA and LKLA-T.

Operating principle

The clamp butterfly valve is designed either for automatic or manual operation. The actuator can be rotated 360 degrees incrementally to any position.

Automatic operation
The automated clamp butterfly valve is controlled from a remote location by means of compressed air using a pneumatic actuator. The actuator controls the axial movement of a piston, which rotates the shaft 90 degrees.

The torque exerted by the actuator increases when the valve disc makes contact with the valve sealing ring to ensure effective closing. The actuator is compatible with the LKB butterfly valve and is available in three standard versions: normally closed (NC), normally open (NO) and air/air activated (A/A).

Manual operation
The CBFV is controlled manually by means of a handle for easy, flexible operation. The handle mechanically locks the valve in its open or closed position.

Options

  • ThinkTop valve sensing and control unit
  • Bracket for actuator
  • Handle
  • With two or four positions
  • With infinite interim positions
  • Multi-position handle
  • Special cap for handle position turned 90 degrees
  • Service tool for actuator
  • Service tool for fitting 25-38 mm (DN25-DN40) valve discs

 

Instruction manual – Clamp Butterfly Valve –

EN PD Sheet – CBFV Clamp Butterfly Valve – EN

 

DescriptionFeaturesHow It WorksDetailsDocumentation

LKB butterfly valves

ABS offers Alfa Laval’s Butterfly valves that are relatively straightforward on/off routing valves with a substantial opening area and low flow resistance. Where hygiene standards are important, these are ideal for use with low and medium-viscosity liquids.

Either remotely controlled by an actuator or manually operated with a handle, the Tri-Clover LKB butterfly valve is designed to provide years of dependable service in sanitary stainless steel fluid handling systems.

It is also built for use in a wide range of applications and working pressures. LKB is FDA compliant and available with a variety of handle options.

Models:

  • LKB51 Manual Valve
  • LKB53 Actuated Valve

Related Industries:

Processed Foods, Beverages, Brewery, Home & Personal Care, Chemical

Full range, full spectrum

The Alfa Laval LKB butterfly valve range consists of modular units designed to meet the full spectrum of requirements at working pressures from full vacuum to 10 bar. All valves are FDA-compliant, designed for use in a wide range of stainless steel pipe systems, and can be built to comply with virtually any installation standard.

Reliable performance

LKB butterfly valves come with several features that ensure reliability performance. A highly polished stainless steel disc with surface smoothness down to Ra<0.8 µm and bearing bushes clipped onto the disc stems prevent metal-to-metal abrasion and ensure smoother disc movement.

The stem diameter provides particularly low flow resistance, ensuring gentle product treatment for low and medium-viscosity products. In addition, Alfa Laval seal technology provides greater thermal stability, better chemical resistance and improved tensile strength.

Manual or automated control

Alfa Laval LKB butterfly valves can be complemented with lockable handle for manual operation of with an actuator and in combination with either a valve indication unit or Alfa Laval ThinkTop valve sensing and control units.

For manual operation: Alfa Laval provides a complete range of handles, including a multi-position lockable handle.

For automated operation: A selection of different actuators is available; special double-spring design enables application of maximum torque to the valve disc at breakaway and seal positions. This makes it easy to integrate these valve units into larger systems operated from a central point, and/or to operate them automatically for maximum efficiency.

LKB butterfly valve range

The Alfa Laval LKB butterfly valve range consists of the following modular units that can easily be mounted in complex cluster set-ups alongside valves of other types.

  • LKB and LKB-2 with standard spring-loaded locking handle for straightforward manual operation with a pulling/turning movement. LKB is used for ISO connection and the LKB-2 is used for DIN connection.
  • LKB-F for flange connections to easily remove the valve body without dismantling piping setups. For both ISO and DIN.

 

Construction

The valve consists of two valve body halves, valve disc, bushes for the stem and seal ring. The valve is assembled by means of screws and nuts. The handle is fitted onto the valve by means of a cap/block system and screw.

Operating principle

The standard Alfa Laval LKB butterfly valve range is designed either for automatic or manual operation.

Automatic operation for LKB and LKB-F

The automated LKB butterfly valve is controlled from remote location by means of compressed air using a pneumatic actuator. The actuator controls the axial movement of a piston, which rotates the shaft 90°. The torque exerted by the actuator increases when the valve disc contacts the valve sealing ring, to ensure effective closing. The actuator is available in three standard versions: normally closed (NC), normally open (NO) and air/air activated (A/A).

Manual operation for LKB and LKB-2

The LKB butterfly valve is controlled manually by means of a handle. The handle mechanically locks the valve in its open or closed position. For the LKB and LKB-2, the handles for the valve sizes DN125 and DN150 enable valve adjusment and can be locked in two intermediate positions to regulate the flow rate.

APPLICATIONS

Alfa Laval’s Tri-Clover LKB butterfly valve is designed for use in a broad spectrum of applications and working pressures. These FDA-compliant valves provide reliable performance and smooth operation. The stem diameter provides particularly low flow resistance, ensuring gentle product treatment for low and medium-viscosity products.

WORKING PRINCIPLE

The LKB is either remotely controlled by means of an actuator or manually operated by means of a handle. The actuator is made in three standard versions, normally-closed (NC), normally-open (NO), and air/air-activated (A/A). The actuator is designed so that an axial movement of a piston is transformed into a 90° rotation of a shaft. The torque of the actuator is increased when the valve disc contacts the seal ring of the butterfly valve. A variety of handle options for manual operation mechanically secures the valve in its open, closed, or intermediate positions.

STANDARD DESIGN

The valve consists of two valve body halves, a valve disc, bushings for the disc stem, and a seal ring. The valve is assembled by means of screws and nuts. Two actuator sizes, ø 85 mm (3.35 inch) and ø 133 mm (5.24 inch), cover all valve sizes. The actuator is fitted onto the valve by means of a bracket and screws. The handle for manual operation is fitted onto the valve by means of a cap/block system and a screw. The LKB is available with either welded ends or Tri-Clamp® sanitary connections.

CONTROL EQUIPMENT

Control and indication can be configured with a pneumatically actuated valve. Options include Tri-Clover Green Top, Alfa Laval ThinkTop®, and laterally mounted indication units.

MATERIALS
Product Wetted Steel Parts 304, 316L
Valve Disc 316L
Other Steel Parts 304
Rubber Grades EPDM (standard)
Silicone
Fluorinated rubber (FPM)
PFa (bonded over EPDM)
HNBR
Bushings for Valve Disc PVDF
Finish ? 32 microinches RA ID
Machined OD
Actuator Body 304
Actuator Piston Light alloy (bronze for ø 85 mm and A/A)
Actuator Seals Nitrile (NBR)
TECHNICAL DATA
Max Product Pressure 145 psi
Min Product Pressure Full vacuum
Valve Temperature Range 15 – 200°F
Actuator Max Air Pressure 100 psi
Actuator Min Air Pressure, NC or NO 60 psi
Actuator Temperature Range 15 – 195°F
Actuator Air consumption (FT free air) ø 85 mm = 0.0006 psi
ø 133 mm = 0.0024 psi
Alfa Laval LKB Automatic or Manual Butterfly Valve and LKB-LP Low Pressure Butterfly Valve – Instruction Manual – ESE02446EN 
Alfa Laval LKB Automatic or Manual Butterfly Valve – ESE00285EN.pdf 
Alfa Laval LKB Zawór motylowy z nap?dem automatycznym lub r?cznym – Karty produktu – ESE00285 
Alfa Laval LKB Zawór motylowy z nap?dem automatycznym lub r?cznym – Ulotka produktu – ESE00285. 
DescriptionFeaturesHow It WorksDetailsDocumentation

LKB UltraPure butterfly valves

These butterfly valves are hygienic on/off valves for use with low and medium-viscosity liquids in personal care, biotech and pharmaceutical applications.

Related Industries:

Processed Foods, Pharmaceutical Production and Biotechnology

Comprehensive butterfly valve range

Based on the well-known Alfa Laval LKB valve platform, our LKB UltraPure butterfly valve range is a competitively priced alternative to diaphragm valves. Designed for use in high purity applications, the range consists of easy-to-configure units designed to meet the full spectrum of requirements for hygienic applications.

A full range of dimensions (ASME BPE, DIN 11850 and ISO 2037) is available.

For dairy, food and beverage, and high-pressure applications, Alfa Laval also offers the traditional LKB butterfly valve.

Hygienic performance

LKB UltraPure butterfly valves come with several features that ensure dependable hygienic performance.

  • LKB UltraPure butterfly valves are available with Ra < 0.5 µm, Ra < 0.4µm or EP (SF1 and SF4) surface finishes to ensure cleanability and minimize contamination risks.
  • Highly polished stainless steel disc and bearing bushings clipped onto the disc stems prevent metal-to-metal abrasion and ensure smoother disc movement.
  • Stem diameter provides particularly low flow resistance, ensuring gentle product treatment for low and medium-viscosity products.
  • Alfa Laval’s advanced seal technology seal technology provides greater thermal stability, better chemical resistance and improved tensile strength.
  • For perfect welding conditions, the ASME BPE version of the LKB UltraPure butterfly valves feature weld ends with defined sulphur content. The extended length of the valve makes it possible to use an orbital welding machine.

Manual or automatic control

LKB UltraPure butterfly valves can be complemented either with:

  • A handle for manual operation to mechanically lock the valve in either open or closed position. A complete range of handles, including a multi-position lockable handle, is available.
  • An air actuator for automated control in combination with either a valve indication unit or Alfa Laval ThinkTop valve sensing and control units. A selection of actuators is available.

Total peace of mind with complete documentation for validation

Equipment and components in the Alfa Laval BioPharm portfolio are supplied with Alfa Laval Q-doc, a comprehensive documentation package that provides full transparency of the entire supply chain, from raw material to final equipment delivery. This smoothes purchasing and installation procedures as well as facilitates qualification, validation and change control procedures. Based on GDP (Good Documentation Practice), Alfa Laval Q-doc covers every aspect of biotech and pharmaceutical equipment supply and provides customers with transparent and well-documented quality assurance of the sourced equipment.

The Q-doc package for LKB UltraPure butterfly valves comprises equipment manuals, performance tests, quality and manufacturing procedures, material certificates, traceability of product wetted parts and the necessary parts and service information. This attention to detail maximizes uptime and minimizes risk.

Construction

The valve consists of two valve body halves, valve disc, bushings for the disc stem and seal ring. The valve is assembled by means of screws and nuts.

Operating principle

The standard Tri-Clover LKB UltraPure butterfly valve range is designed either for automatic or manual operation.

Automatic operation

The automated LKB UltraPure butterfly valve is controlled from remote location by means of compressed air using a pneumatic actuator. The actuator controls the axial movement of a piston, which rotates the shaft 90°. The torque exerted by the actuator increases when the valve disc contacts the valve sealing ring, to ensure effective closing. The actuator is available in three standard versions: normally closed (NC), normally open (NO) and air/air activated (A/A).

Manual operation

The Tri-Clover LKB UltraPure butterfly valve is controlled manually by means of a handle. The handle mechanically locks the valve in its open or closed position. A two-position, four-position, regulating 90° or lockable multi-position handle is available. The handle is fitted on to the valve by means of a cap/block system and a screw and can be supplied with either welding or clamp connections.

Concept
LKB UltraPure is an automatic or manually operated butterfly valve for
on/off duties. The UltraPure execution is designed and documented to
meet the demand in industries like BioPharm and Personal Care.

Working principles
LKB UltraPure is either remote controlled by means of an air-actuator
or manually by means of a handle.
The actuator is designed so that an axial movement of a piston is
transformed into a 90° rotation of a shaft. The torque of the actuator is
increased when the valve disc contacts the seal of the valve.
The air-actuator comes in three standard versions, normally closed
(NC), normally open (NO) and air/air activated (A/A).
Two actuator sizes, ø85 mm and ø133 mm, cover all valve sizes and
are available in two versions, LKLA and LKLA-T (T for mounting of
indication unit on actuator).
The handle for manual operation mechanically locks the valve in its
open or closed position.
Handles are available in 2 positions, 4 positions, regulating 90° and
lockable multi-position.
The valve can be supplied with either welding or clamp connections.

TECHNICAL DATA
Valve
Max. product pressure: . . . . . . . . . . 1000 kPa (10 bar)
Min. product pressure: . . . . . . . . . . Full vacuum
Temperature range: . . . . . . . . . . . . . -10°C to + 140°C (EPDM)
However max. 95°C when operating the valve

Actuator
Max. air pressure: . . . . . . . . . . . . . . 700 kPa (7 bar)
Min. air pressure, NC and NO: . . . . . 400 kPa (4 bar)
Temperature range: . . . . . . . . . . . . . -25°C to +90°C.
Air consumption (litres free air):
– ø85 mm: . . . . . . . . . . . . . . . . . . 0.24 x p (bar)
– ø133 mm: . . . . . . . . . . . . . . . . . . 0.95 x p (bar)
Weight:
– ø85 mm: . . . . . . . . . . . . . . . . . . 3 kg.
– ø133 mm: . . . . . . . . . . . . . . . . . . 12 kg

PHYSICAL DATA
Product wetted steel part . . . .1.4404 (316L) acc. to EN 10088
Other steel parts . . . . . . . . . .1.4301 (304) acc. to EN 10088
Bushings for valve disc . . . . .PVDF

Elastomers
Product wetted seals . . . . . . .EPDM acc. to FDA and USP Class VI

Connections
Weld ends** . . . . . . . . . . . . .Matching tubes and fittings: ISO 2037
/ DIN / ASME BPE
Acc. to ISO, DIN or ASME BPE
Clamp ends . . . . . . . . . . . . .Matching tubes and fittings: ISO 2037
/ DIN / ASME BPE
Acc. to ISO, DIN or ASME BPE
** Weld ends on ASME BPE valves are according to ASME BPE 2009
316L Table DT-3 with low sulfur and suitable for orbital welding

Actuator
Actuator body: . . . . . . . . . . .1.4307 (304L)
Piston: . . . . . . . . . . . . . . . .Light alloy
Air/air version (for ø85 mm: Bronze).
Seals: . . . . . . . . . . . . . . . . .NBR
Housing for switches: . . . . . .PPO
Surface specification (Product wetted steel parts)
ISO 2037 / DIN:
Internal: . . . . . . . . . . . . . . . . . . . . . . . .0.5 µm
ASME BPE designation: . . . . . . . . . . . . .SF1
External: . . . . . . . . . . . . . . . . . . . . . . . .Semi-bright
ASME BPE*:
Internal: . . . . . . . . . . . . . . . . . . . . . . . .0.5 µm
ASME BPE designation: . . . . . . . . . . . . . .SF1
External: . . . . . . . . . . . . . . . . . . . . . . . .Semi-bright
ASME BPE*:
Internal: . . . . . . . . . . . . . . . . . . . . . . . .0.4 µm electro polish
ASME BPE designation: . . . . . . . . . . . . . .SF4
External: . . . . . . . . . . . . . . . . . . . . . . . .Semi-bright
* According to ASME BPE 2009 table SF-3

Instruction Manual – LKB UltraPure – EN

PD Sheet – LKB UltraPure Automatic or Manual Butterfly Valve – EN

DescriptionFeaturesHow It WorksDocumentation

Unique Control for LKB Butterfly valves

The Unique Control LKB automation unit with built-in actuator offers intelligent control for LKB butterfly valves used in all applications. This straightforward all-in-one actuator offers superior flow control, hygiene, durability and reliability.

Related Industries:

Agriculture Processing, Processed Foods, Home and Personal care

Intelligent reliability and control for butterfly valves

The Alfa Laval Unique Control LKB is an integrated valve control unit and actuator with an enhanced hygienic one-piece design. Tested to over a million strokes without service, Unique Control LKB is the most durable actuator available today. Its well-built design with tough composite casing withstands most harsh environments.

IP66/IP67-approved, the Unique Control LKB features superior technology, shape and material, which prevent condensation and the penetration of dust, water and other particles into the unit. This contributes to maximum hygiene and effectively eliminates problems associated with corrosion, external contamination and the effects of physical impact, including vibration, pressure shock, frost, heat, UV radiation and environments polluted with grease, oil and chemicals, without disrupting production.

In addition, the Unique Control LKB provides integrated automation with a clear 360° visible indication and an air surveillance system for reliable real-time monitoring of the operating air pressure. Instead of being controlled by a conventional mechanical spring like most butterfly valve actuators, an air spring controls the actuator of the Unique Control LKB. This, combined with the intelligent capabilities of the sensing and control unit, enables operation at a lower air pressure and delivers significant benefits in terms of durability, reliability and more system uptime.

Simplified setup for butterfly valve control

Push n’ Play self-configuration gets the Unique Control LKB up and running five times faster than conventional solutions. Simply press one button and the Unique Control, which is compatible with both digital and AS interfaces, configures and calibrates itself to ensure the best possible mode of operation. This convenient one-button process saves time and money.

One size actuator fits all LKB butterfly valves

For ultimate convenience, a single actuator is suitable for most valve solutions thanks to the high torque, which enables the unit to fit any valve size. In addition, it is easy to switch from normally open (NO) to normally closed (NC) and vice versa onsite. This one-size-fits-every-valve design makes engineering, ordering, installation, onsite configuration and stock keeping easy.

Easy upgrade for butterfly valve actuators

The Unique Control fits all manual and actuated butterfly valves in the Alfa Laval LKB range. Existing installations are easy to upgrade to Unique Control LKB; all that is required is a new bracket. Simply order the optional bracket kit for that particular LKB valve size in order to mount the Unique Control unit easily onto any of the 1” to 4” and DN25 – DN100 valves in the LKB valve range.

Valve control and automation range

The Unique Control LKB offers intelligent automation and control of Alfa Laval LKB butterfly valves and complements our broad range of valve control and automation solutions.

Operating principle

The Unique Control LKB uses an air spring, which enables the unit to be operated at a significantly lower air pressure compared to control units using a conventional mechanical spring. This reduces wear thereby eliminating the need for maintenance.

When air enters the Unique Control LKB, the built-in solenoid valve diverts the flow either above or below the piston. The helix inside the piston transfers the vertical movement into a rotation ensuring smooth valve operation. The design enables the Unique Control LKB to operate at an air pressure of only 3 bar.

Integrated air surveillance system

A built-in pressure sensor monitors the air supply. In the event of a critical drop in air pressure, the actuator sends a warning signal, but continues to operate. In the event that the supply of air is cut off, the actuator also sends a warning signal, maintains its position and continues to operate after resolving the problem.

Switching from NC to NO

Changing the normally closed contact to normally open position is easy. Simply open the top cover, loosen the screws, lift up and rotate the top 180°, then re-assemble it.

Options

Communication interface: AS-interface v.2.1, 31 nodes; AS-interface v.3.0, 62 nodes; and digital interface.

Bracket kit: 1″ to 4″ and DN 25 – DN 100:

Bracket sizes: DN25-50, DN65, DN80 and DN100

 

Instruction Manual – Unique Control for Butterfly Valves – EN

PD Sheet – Unique Control LKB – EN

DescriptionFeaturesHow It WorksDetailsDocumentation

LKB-F Butterfly Valve

ABS offers this special flange version of the LKB butterfly valve that makes it easy to remove the valve body without needing to dismantle piping set-ups. This in turn makes it easy to undertake repair, service and replacement with a bare minimum of disruption.

Related Industries:

Agriculture Processing, Processed Foods, Home and Personal care, Beverage Processing

Full range, full spectrum

The Alfa Laval LKB butterfly valve range consists of modular units designed to meet the full spectrum of requirements at working pressures from full vacuum to 10 bar. All valves are FDA-compliant, designed for use in a wide range of stainless steel pipe systems, and can be built to comply with virtually any installation standard. Alfa Laval LKB-F for flange connections to easily remove the valve body without dismantling piping setups. For both ISO and DIN.

Reliable performance

LKB-F butterfly valves come with several features that ensure reliability performance. A highly polished stainless steel disc with surface smoothness down to Ra<0.8 µm and bearing bushes clipped onto the disc stems prevent metal-to-metal abrasion and ensure smoother disc movement.

The stem diameter provides particularly low flow resistance, ensuring gentle product treatment for low and medium-viscosity products. In addition, Alfa Laval seal technology provides greater thermal stability, better chemical resistance and improved tensile strength.

Manual or automated control

Alfa Laval LKB-F butterfly valves can be complemented with lockable handle for manual operation of with an actuator and in combination with either a valve indication unit or Alfa Laval ThinkTop valve sensing and control units.

For manual operation: Alfa Laval provides a complete range of handles, including a multi-position lockable handle.

For automated operation: A selection of different actuators is available; special double-spring design enables application of maximum torque to the valve disc at breakaway and seal positions. This makes it easy to integrate these valve units into larger systems operated from a central point, and/or to operate them automatically for maximum efficiency.

Construction

The valve consists of two valve body halves, valve disc, bushes for the stem and seal ring. The valve is assembled by means of screws and nuts. The handle is fitted onto the valve by means of a cap/block system and screw.

Operating principle

The standard Alfa Laval LKB-F butterfly valve range is designed either for automatic or manual operation.

Manual or automatic operation for LKB and LKB-F

The automated LKB butterfly valve is controlled from remote location by means of compressed air using a pneumatic actuator.

The actuator controls the axial movement of a piston, which rotates the shaft 90°. The torque exerted by the actuator increases when the valve disc contacts the valve sealing ring, to ensure effective closing. The actuator is available in three standard versions: normally closed (NC), normally open (NO) and air/air activated (A/A).

Manual handle is avalibale.

Concept
The LKB range are hygienic butterfly valves for use in stainless steel
pipe systems.

Working principle
LKB is either remote-controlled by means of an actuator or manually
operated by means of a handle.
The actuator is made in three standard versions, normally closed (NC),
normally open (NO) and air/air activated (A/A).
The actuator is designed so that an axial movement of a piston is
transformed into a 90° rotation of a shaft. The torque of the actuator is
increased when the valve disc contacts the seal ring of the butterfly
valve.
The handle for manual operation mechanically locks the valve in its
open or closed position. The handles for the valve sizes DN125 and
DN150, which are designed for locking in two intermediate positions,
enable adjusting of the valve, so that the flow rate can be regulated.

TECHNICAL DATA
Valve
Max. product pressure: . . . . . 1000 kPa (10 bar)
Min. product pressure: . . . . . Full vacuum
Temperature range: . . . . . . . . -10°C to + 140°C (EPDM)
However max. 95°C when operating
the valve

Actuator
Max. air pressure: . . . . . . . . . 700 kPa (7 bar)
Min. air pressure, NC and NO: 400 kPa (4 bar)
Temperature range: . . . . . . . . -25°C to +90°C
Air consumption (litres free air) –
ø85 mm: . . . . . . . . . . . . . . 0.24 x p (bar)
Air consumption (litres free air) –
ø133 mm: . . . . . . . . . . . . . . 0.95 x p (bar)
Weight: . . . . . . . . . . . . . . . – ø85 mm: 3 kg.
– ø133 mm: 12 kg.
OC TOB E R 2008

PHYSICAL DATA
Valve bodies
Product wetted steel parts: . . .1.4307 (304L) or 1.4404 (316L)
Disc: . . . . . . . . . . . . . . . . .1.4301 (304) or 1.4404 (316L)
Other steel parts: . . . . . . . . .1.4301 (304)
Rubber grades: . . . . . . . . . .Q, EPDM, FPM, HNBR1) or PFA2)
Bushes for valve disc: . . . . . .PVDF
Finish: . . . . . . . . . . . . . . . .Semi-bright
1) LKB-F with HNBR not available in DIN
2) LKB-F with PFA not available

Actuator
Actuator body: . . . . . . . . . . .1.4307 (304L).
Piston: . . . . . . . . . . . . . . . .Light alloy (for ø85 mm:
Bronze) Air/air version
Seals: . . . . . . . . . . . . . . . . .NBR

Standard design
LKB is available in three versions, LKB for ISOand DIN tubes, LKB-2
for DIN tubes and LKB-F for flange connection.
The valve consists of two valve body halves, valve disc, bushes for the
disc stem and seal ring. LKB-F also consists of two flanges and two
flange seal rings. The valve is assembled by means of screws and nuts.
Two actuator sizes, ø85 mm and ø133 mm, cover all valve sizes. The
actuator is available in two versions, LKLA and LKLA-T.
The actuator is fitted onto the valve by means of a bracket and screws.
(The actuator can also be fitted onto ball valves by means of special
brackets).
The handle for manual operation is fitted onto the valve by means of a
cap/block system and a screw.
The valve has welding ends as standard, but LKB and LKB-2 can also
be supplied with fittings.

Options
A. Male parts or clamp liners in accordance with required standard.
B. ThinkTop® for control and indication.*
C. Indication unit with micro switches.*
D. Indication unit with inductive proximity switches.*
E. Indication unit with Hall proximity switches.*
F. Explosion proof indication unit with inductive proximity switches.*
G. Bracket for actuator. (Also for ball valves).
H. Handle with two or four positions (standard on DN125 and DN150).
I. Handle for electrical position indication.
J. Handle with infinite intermediate positions (not for DN125 and
DN150).
K. Multipositioning handle**.
L. Lockable Multiposition Handle. Padlock can be mounted as shown
in fig. 3.
Note! Padlock is not delivered.
M. Special cap for 90° turned handle position.
N. Service tool for actuator.
O. Service tool for fitting 25-38 mm (DN25 – DN40) valve discs.
* For further information see Product Catalogue chapter “Control
& Indication”.
** A padlock can be mounted on the Lockable Multiposition
Handle as shown in the opposite figure.
Note! Padlock is not delivered.

Alfa Laval LKB Automatic or Manual Butterfly Valve – Product Leaflet – ESE00285 
Instruction manual LKB Automatic or Manual Butterfly Valve.pdf