Alfa Laval - LKB UltraPure Butterfly Valves

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

Features：

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.

How It Works：

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.

Details：

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

Documentation：

Instruction Manual – LKB UltraPure – EN

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