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Single Seat Valves & Double Seat Valves

Alfa Laval’s range of single seat valves consists of large numbers of purpose-designed valve units that are very robust and flexible. They are ideal for use in processes with a high hygiene standard.

On the other hand, double seat valve concept provides modular solutions that are easily tailored to any specific requirement. The double seat design provides long-lasting, spillage-free operation thus minimizing the risk of product contamination. The use of double lip seals provides added protection to ensure safe and hygienic operation.

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

DescriptionFeaturesDetailsHow It WorksDocumentation

Single Seat Valve:

Alfa Laval – LKAP seat valves

Compact and straightforward, LKAP seat valves are reliable air-operated shut-off valves widely used for small flow rates and for dosing applications in the dairy, food and beverage industries.

Related Industries:

Food and Beverage

Proven shut-off valve

The Alfa Laval LKAP seat valve is a quality pneumatic shut-off valve that is based on reliable, proven technology. It is ideal to handle small flow rates of up to 9 m3/h and purpose-built for specialty applications, such as a CIP supply valve to Unique mixproof valves or dosing valves in mixing applications.

Clean simplicity

Like all other hygienic Alfa Laval valves, the LKAP features a simple, straightforward design with the fewest possible components and minimal moving parts. Smooth surfaces and sanitary finishes contribute to good hygiene and cleanability.

Shut-off valve range

The standard Alfa Laval LKAP valve is a normally closed (NC) valve with a two- or three-port valve body (LKAP-V and LKAP-T, respectively). Upon request, the LKAP valve is also available as a normally open (NO) valve.

Compliance with most hygienic standards

Alfa Laval LKAP valves meet most standards requested in the dairy, food and beverage, and personal care industries

Concept

The LKAP pneumatic valve is a remote-controlled shut-off valve, widely
used for small flows and for dosing applications in food, chemical and
other industries.

Working principle

The valve is operated by means of compressed air and has spring
return. It has few and simple moving parts which results in a very
reliable valve.

Standard Design

LKAP consists of actuator with air cylinder and piston, double lipseal
for stem, stem unit with replaceable O-ring in the plug, and valve body
with welding connections. It has visual indication of the valve position
and is available with 2 (LKAP-V) or 3 ports (LKAP-T). A reed switch unit
for indication of open and closed positions is available. The valve can
be ordered as normally open (NO) or normally closed (NC) versions.
NC is standard.
The LKAP valve come in DN/OD 25 mm.
The LKAP valve come in DN/OD 1”.

TECHNICAL DATA

Temperature
Max. temperature: . . . . . . . . . . . . . . . . .130 °C (EPDM)
Min. temperature: . . . . . . . . . . . . . . . . . .10 °C

Pressure

Kv value = 9 (9 m3/h for ?p = 1 bar with the valve open).
Max. product pressure under the plug (NC): .600 kPa (6 bar)
Min. air pressure: . . . . . . . . . . . . . . . . . .500 kPa (5 bar)
Max. prod. pressure: . . . . . . . . . . . . . . .1000 kPa (10 bar)

Construction

The LKAP valve consists of an actuator, double lip seal for stem, stem, EPDM sealing and valve body with welding connections. Visual indication of the valve position is provided.

For remote indication of the valve position, an optional reed switch position transmitter is available.

Operating principle

The Alfa Laval LKAP seat valve is a normally closed (NC) valve with a spring return that is controlled from a remote location by means of compressed air.

Options

  • Fittings according to required standards
  • Bracket with standard M12 sensors for indication of open and closed positions
  • Product wetted seals of FPM or NBR

LKAP seat valve

Instruction Manual – LKAP – EN

PD Sheet – LKAP Air-Operated Valve – EN

 

DescriptionFeaturesDetailsHow It WorksDocumentation

Single Seat Valve:

Alfa Laval – Unique 7000 Series (US) 

Tri-Clover Unique 7000 single seat valves combine proven technology and innovative features, with a one-piece body moulded from a single stainless steel disc.

MODELS

  • Shut-Off
  • Divert
  • Reverse Acting
  • Long Stroke
  • Regulating
  • Aseptic
  • Tangential
  • Y-Body
  • Flo-Diversion Valve
Related industries:
Processed Foods, Dairy, Beverages, Brewery, Home & Personal Care, Chemical

Exceptional valve hygiene

The one-piece body of the Unique 7000 design is formed from a single stainless steel disc. This ensures  an exceptionally smooth surface finish with no welds, resulting in maximum strength and reliable production, as well as improved hygiene. The ball-shaped body with no dead zones guarantees gentle product treatment and is extremely easy to clean. The upgraded sealing concept, with defined compression of sealing with metal-to-metal contact, results in maximum integrity for the liquids passing through the valve.

The Unique 7000 valve complies with prevailing health, safety and hygiene regulations in full, is EHEDG certified  and is authorized to bear the 3-A symbol for hygienic equipment design.

With a minimum of moving parts, the Unique 7000 is also designed for rapid, easy maintenance and to keep spare parts inventories to the minimum.

 Tri-Clover Unique 7000 – Standard valve. The Unique 7000 series is an innovative new generation of Tri-Clover single seat valves that are designed to meet the highest process demands of hygiene and safety. They`re built on a well-proven, platform from an installed base of more than 1 million valves.
 Tri-Clover Unique 7000 tank valve

Tri-Clover Unique 7000 tank valve cosists of a valve body with or without a tank flange. Available in two different versions for installations that either open into the tank (Direct – Acting) or close up against the tank (Standard version)
 Tri-Clover 7000 - Aseptic valve Tri-Clover 7000 – Aseptic valve. A one-piece diaphram provides hermetic sealing against intrision from the armosphere, ensuring the highest level og hygienic aseptic processing.

The special diaphragm can also be used with other Unique 7000 units – Including standard, tangenital, two-step and tank outlet valve configurations – where aseptic processing is crucial.

  Tri-Clover Unique 7000 – Y body. An ideal unobstructed flow is required for the most demanding viscous products.
 Tri-Clover Unique 7000 - long stroke valve

Tri-Clover Unique 7000 – long stroke valve. Specially suitable for use with media or products that contain particles and/or suspended solids – as well as highly viscous products. In such cases, larger passageways are needed to provide gentler, more effective flow control.

Tri-Clover 7000 – tangential valve features an off-center body so that the port connection can still be drained when the valve is positioned horizontally. Particulary suitable for use in tank openings, horizontally mounted drains ans a wide range of installations where space restrictions make it difficult to install valves at other angles
 Tri-Clover Unique 7000 - two-step valve.

Tri-Clover Unique 7000 – two-step valve. Stroke height can be adjusted as required to march specific volumes and quantities. This makes it esoecially suitable for dosing, and to two-stage filling where the focus is on ensuring an exact volume. Can also be used for draining two pipes at the same time
 Tri-Clover Unique 7000 - Reverse acting valve

Tri-Clover Unique 7000 – Reverse acting valve provides multiple solutions, for instance, to prevent pressure shocks when the pipework does not permit closing against product flow with the use of standard single seat valves. May be used as an overflow valve after a positive displacement pump or as an muli-port flow diversion valve. Can also be configured as a shut-off valve with two or four ports, or as a changeover valve with tree to six ports.
 Tri-Clover Unique 7000 - fractional valve

Tri-Clover Unique 7000 – fractional valve. A fractional valve with the same Unique 7000 design and few moving parts. Widely used in processing food, beverages and dairy products, as well as pharmaceuticals and persoval care products. Ideal for use in sampling, CIP (cleaning-in-place) and other contexts where only lower rates are involved.
 Tri-Clover Unique 7000 - manually operated valve Tri-Clover Unique 7000 – manually operated valve. Small, relatively simple valves that are available with manye different options and features, including lockable flights, for either regulating or dosing purposes.
APPLICATIONS

Ideal applications for this single seat valve include the dairy, beverage, brewery, food, pharmaceutical, biotechnology, and personal care industries.

WORKING PRINCIPLE

The valve is remotely controlled by means of compressed air. The valve’s parts are few, simple, and movable—which results in a very reliable valve with low maintenance cost.

STANDARD DESIGN

The Unique 7000 valve is designed to deliver the years of reliability and performance that you’ve come to expect with all Tri-Clover products. Its flexible design consists of either one or two bodies that are clamped together. The TR2 seat ring with enhanced hygiene and CIP capabilities comes standard with all Unique 7000 series valves. For added confidence, the valve can be supplied with a controlled compression elastomer seal ring. The standard actuator comes with a five year warranty. The Unique 7000 valve sizes range from 1 – 4 inches.

FEATURES
  • One-piece, annealed body with no welds or porosities
  • Ball-shaped valve body provides gentle product treatment and cleanability
  • Modular design allows for maximum flexibility
  • Double working lip seal minimizes risk of contamination
  • Redesigned TR2 seal ring enhances CIP capabilities and is easily maintained
MATERIALS
Product Wetted Steel Parts 316L (internal Ra < 32)
Other Steel Parts 304
Plug Seal PTFE (TR2) standard
Optional Elastomer Plug Seals EPDM, HNBR or FPM
Other Product Wetted Seals EPDM (standard)
Optional Product Wetted Seals HNBR or FPM
Other Seals NBR
TECHNICAL DATA
Max Product Pressure (depending on valve specifications) 145 psi
Min Product Pressure Full vacuum
Temperature Range 14 – 284°F (EPDM)
Air Pressure 72.5 – 101.5 psi

How it works

A seat valve is opened or closed via a plug that is lifted up or down and held in place by a seat. This type of valve is controlled either manually or by compressed air. It has only a few simple moving parts, making this an extremely reliable, hygienic valve for stopping or diverting product flows in both single and multidirectional processing installations.

The basic design of the Tri-Clover Unique 7000 unit consists of either one or two valve bodies, clamped together. The TR2 seat ring with enhanced CIP capabilities and better hygiene is standard on all Unique 7000 series valves. These are also available with a controlled-compression elastomer seal ring. The standard actuator is supplied with a five-year warranty.

An extensive range of control and monitoring equipment can also be fitted to these valves. These range from IndiTop, ThinkTop® Basic and GreenTop units to the advanced ThinkTop®.

Unique 7000 valves are available in sizes of 1–4 inches, and the range consists of a comprehensive selection of special valve types. These include reverse-acting, long-stroke and manually operated models, in addition to tank outlet valves, aseptic valves, two-step and Y-body valves, and special MO, MR and Flo-Diversion units.

Unique 7000 - How it works

Instruction Manual – Unique Sanitary Mixproof LP and LP-F Valve – EN

Instruction Manual – Unique 7000 Series Valve – Standard and Reverse Acting – EN

US Instruction Manual – Unique 7000 Series Aseptic – Manually Operated – EN

DescriptionFeaturesHow It WorksDetails

Single Seat Valve:

Alfa Laval Tri-Clover 700 Series Valve

The Alfa Laval Tri-Clover® 700 Series is a range of air-operated single-seat valves that provide years of reliable performance, and have been installed for decades in various food, dairy and beverage plants across the US.

The Tri-Clover® 700 Series single seat valves from Alfa Laval deliver years of reliable performance in a wide variety of temperature ranges and working conditions. Choose the configuration that’s right for you.

A sanitary and flexible design offers alternatives to meet the exacting requirements of your applications. Whether you choose a stop valve with two or three ports, or a divert valve with three to five ports, the 700 Series valves offer great flexibility for the long haul.

Models

  • Shut-Off
  • Divert
  • Throttling
  • Tank Outlet
  • Kettle

Related Industries:

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

Dependable design

Alfa Laval Tri-Clover 700 Series valves feature a durable and dependable design with rugged plastic stem bushings, which eliminate metal-to-metal galling. In addition, the stem is threaded to the actuator shaft, eliminating the coupling between the stem and actuator, thereby ensuring proper alignment. Bushings at each end of the cylinder support stem also ensure perfect alignment. Finally, each valve features a heavy-duty bonnet and body ferrule design that will stand up to years of pounding from hydraulic shock.

A variety of styles and sizes

700 Series valves are available in both long and short actuators, including a wide selection of shut-off and divert valves. Sizes range from 2″ (50 mm) to 4″ (102 mm), in normally opened or closed positions. A 32Ra surface finish is standard, with several valve body combination options to choose from.

Helping fill your valve project gaps

Even in this era of continuous mixproof processing, 700 Series single-seat valves are the perfect valve project gap filler. Specifically, if a simple divert valve is needed, consider a 761 divert valve. Or, if a section of your process requires flow diversion, install a series of 762 Flow Diversion valves – as shown.

The valve is remote-controlled by means of compressed air. It has few and simple moveable parts which results in a very reliable valve.

As an air-operated seat valve, it can be configured with either a short-stroke or long-stroke actuator. The 761 valve has a flexible sanitary design, allowing it to be used in a wide range of applications – as a stop valve with two or three ports or as divert valve with three to five ports.

STANDARD DESIGN

The Alfa Laval 700 Series valve’s rugged plastic stem bushings eliminate metal-to-metal galling. The stem is threaded to the actuator shaft, eliminating the coupling between the stem and actuator, which ensures proper alignment. Bushings at each end of the cylinder support stem also ensure perfect alignment. Each 700 Series valve features a heavy-duty bonnet and body ferrule design that will stand up to years of pounding from hydraulic shock.

WORKING PRINCIPLE

700 Series valves are remotely controlled by means of compressed air. This design requires very few simple, movable parts, greatly enhancing reliability. Heavy-duty construction and precision-molded bonnet gaskets ensure positive alignment under severe operating conditions. The valve stem design requires only a single o-ring seal.

ACTUATOR FUNCTION
  • Normally open (NO), normally closed (NC), or air-to-air operation
  • Actuators are reversible NO/NC and semi-maintainable
  • Short or long stroke
  • High pressure option available
MATERIALS
Product Wetted Steel Parts 316L
Other Steel Parts 304
Plug Stem Buna bonded or “TR”/”TR2” PTFE replaceable (standard)
EPDM or SFY (optional)
Product Wetted Seals Buna (standard)
EPDM or SFY (optional)
TECHNICAL DATA
Max Product Pressure Depends on valve specification and size (contact CSI)
Temperature Range 200 – 284°F (EPDM)
Air Pressure 60 – 80 psi
DescriptionFeaturesHow It WorksValve RangeDocumentation

Single Seat Valve:

Unique Single Seat Valves Series (Unique SSV)

Ideal for uninterrupted production in a broad range of hygiene-critical applications, Unique single seat valves are pneumatic seat valves used to shut off or change product flow.

 

Versatile and reliable single seat valve

Alfa Laval Unique single seat valves (SSVs) are robust and reliable pneumatic seat valves that are supremely reliable and versatile.

Modularity provides cost-effective and nearly endless possibilities for purpose-built seat valves that meet high standards of hygiene and aseptic compatibility. Configure the Unique SSV valve bodies, plugs and actuators to meet virtually any requirement.

Superior valve process safetyIn the US and Canada the Unique 7000 corresponds to the Unique single seat valve.

The Unique SSV range is built on a proven modular platform used on more than a million valves in service worldwide. Pressed from a single stainless steel disc, the valve body is extremely strong and durable, thus ensuring production safety. The enhanced performance of the actuator makes operation safer and more efficient.

Exceptional valve hygiene

The Unique SSV range is engineered to provide excellent hygiene and cleanability. With a surface finish of Ra ? 0.8?m, the smooth, weld-free valve body eliminates crevices that can trap bacteria. The design of the plug supports enhanced cleaning-in-place capabilities, and a double-acting lip seal that minimizes any risk of cross-contamination.

Alfa Laval Unique SSV valves meet most hygienic standards requested in the dairy, food and beverage, and personal care industries. The Unique SSV range is EHEDG-certified and authorized to carry the 3-A symbol. The range also provides full traceability in compliance with the EU Food Regulation 1935/2004.

Greater valve durability

To ensure high sealing quality, the Unique SSV range features defined compression of the O-rings with metal-to-metal contact between plug and seat. This significantly reduces wear and extends valve service life. The standard Unique SSV is supplied with a non-maintainable actuator that has a five-year warranty.

Low total cost of ownership

Thanks to its straightforward, reliable design, the Unique SSV range provides long service life, reduced product loss, greater product safety and more processing uptime. Few moving parts reduce service requirements and inventory costs. More effective CIP procedures with reduced cleaning cycles and, subsequently, the reduced use of cleaning fluids, water and utilities also contribute to the Unique SSV’s low total cost of ownership.

Construction

The Alfa Laval Unique SSV range consists of one, two or three valve bodies, plug, sealing, actuator and clamp ring.

Operating principle

The Alfa Laval Unique SSV is an air-operated seat valve that is remotely operated by means of compressed air. The valve generally has two working ports for air supply in and for process air supply; for changeover valves, a third port is required.

Unique SSV Aseptic

Fully modular with the proven design of the Unique SSV the aseptic single seat valve is equipped with a hermetic sealing diaphragm that ensures true aseptic conditions during operation. It hermetically seals against intrusion from the atmosphere and ensures full protection against the effects of microorganisms

With a “sandwich construction” of PTFE on the product side, EPDM and an enforcing mesh, the aseptic diaphragm is optimized to guarantee reliable performance and long lifetime. In open position the one-piece diaphragm is mechanically supported by the valve to reduce wear and increase endurance.

The Unique SSV Aseptic valve is available in both pneumatic and manual configurations.

                                                                 

                          Unique SSV                                                            Unique SSV

                   aseptic shut-off valve                                       aseptic change-over valve

 Options

  • Fully maintainable actuator
  • High-pressure actuator
  • Product wetted seals in HNBR or FPM
  • TR2 plug seal in PTFE for special applications
  • Valve sensing and control devices, incl ThinkTop, ThinkTop Basic and IndiTop
  • Fittings in accordance with required standard
  • External surface finish 3-A bright

Unique single-seat valve range

The Unique SSV range comprises several purpose-built valve configurations. Modularity provides great flexibility to customize valves to your specific requirements.

 

    Unique SSV valve (standard) for a broad spectrum of processing duties
  Unique SSV reverse-acting valve for use in applications where the flow direction does not allow the use of a standard Unique SSV valve to eliminate the risk of pressure shock.
 

Unique SSSV small single seat valves for use in sampling, CIP and other contexts where only small flow rates are involved.
  Unique SSV tank outlet valves for installations that open into the tank (reverse-acting version) or close up against the tank (standard version).
   Unique SSV ATEX valves for intrinsically safe operation in potentially explosive environments.
 

Unique SSV Y-body valves for use in installations that involve flows with large particles and/or high viscosity, and where the focus is on particularly gentle treatment of products and flows.
 

Unique SSV long-stroke valves for use where larger openings are required to provide gentler, more effective flow control such as in installations with media or products that contain particles and/or suspended solids and for high-viscosity flows.
 

Unique SSV tangential valves for use in tank openings, horizontally mounted drains and for wherever space restriction make it difficult to install valves at other angles.

 

Unique SSV two-step valves for use in dosing, two-stage filling where the focus is on ensuring an exact volume or for draining of two pipes at the same time. Adjustable lifting height makes it possible to match specific volumes and quantities.

 

Unique SSV manually operated valves for shut off, tank outlet or straightforward regulating or dosing purposes that require small, relatively simple valves with many different options and features, including lockable handles.
 

Unique SSV RF valve is available in one size. Unique SSV RF comes with a fixed Kv value of 11 and a plug with almost linear characteristics. It is used for duties where regulating accuracy is essential.

 

ASEPTIC VERSION

Unique SSV aseptic valve for sterile process applications.   A one-piece diaphragm provides hermetic sealing against intrusion from the atmosphere, ensuring full protection against the effects of microorganisms during processing.

The special diaphragm offers modularity as it can  be used with a broard range of the Unique SSV configurations  – including standard, tangential, two-step, manual and tank outlet valves. This modularity also support upgradability of already installed valves if the need arises to modify exiting process installations meeting the need of tomorrow…

The Unique SSV aseptic valve design offers a straight forward design with focus on product safety, sort sterilization time as well as fast and affordable replacement of service parts.

 

 Unique Single Seat DN125 (5″) and DN150 (6″) valves are pneumatic seat valves in a hygienic and modular design offering a wide field of applications, for instance as a stop valve with two or three ports or as a change-over valve with three to five ports. These valves complement the Unique Single Valve family for large size installations in specific areas of your plant where size matter.

Instruction and Manuals – Unique Single Seat Valve – Y-body

Instruction and Manuals – Unique Single Seat Valve – Two Step

Instruction and Manuals – Unique Single Seat Valve – Tank Outlet

Instruction and Manuals – Unique Single Seat Valve – Standard and Reverse Acting- EN

Instruction and Manuals – Unique Single Seat Valve – Manually Operated

Instruction and Manuals – Unique Single Seat Valve – Long stroke

Instruction and Manuals – Unique Single Seat Valve – ATEX Standard

Instruction and Manuals – Unique Single Seat Valve – Aseptic

Instruction and Manuals – Unique SSV- Two Steps

Selection Guide for Unique SSV

Valves and automation for hygienic use – The complete line – Brochure

Product Leaflets- Unique SSV Standard

Product Leaflets- Unique SSV DN125 and DN150

Product Leaflets- Unique SSV Aseptic

Product Leaflets- Unique SSV Aseptic Manually Operated Valve

Product Leaflets- Unique SSV ATEX

Product Leaflets- Unique SSV Long Stroke

Product Leaflets- Unique SSV Manual 

Product Leaflets- Unique SSV Reverse Acting

Product Leaflets- Unique SSV Tangential

Product Leaflets- Unique SSV Tank Outlet

Product Leaflets- Unique SSV Two Steps

Product Leaflets- Unique SSV Y-body

DescriptionDetails

Single Seat Valve:

Alfa Laval – Unique 7000 Small Single Seat Valve

The Small Single Seat Valve from Alfa Laval features the sanitary and flexible design you know and trust in a fractional size. These 1/2 and 3/4 inch valves are applicable for a wide range of tasks, either as stop valves with two or three ports, or as change-over valves with three to five ports. The SSSV series is suitable for use in food, beverage, dairy, and pharmaceutical industries, wherever the sanitation of a seat valve is needed in fractional sizes.

Alfa Laval’s Small Single Seat Valves are available with the options you’d expect from a seat valve, including a range of seal materials, body styles, and actuation options. All valve configurations come with the quality manufacturing and design you’ve come to expect from Alfa Laval. Authorized to carry the 3-A symbol, the SSSV series provided the sanitary operation you require.

The Unique 7000 SSSV is available in the following sizes: ½ and ¾ inch.

MODELS

  • Shut-Off
  • Divert

Related Industries:

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

 

APPLICATION

The small single seat valve series is appropriate for any 1/2 and 3/4 inch application in the food, beverage, and dairy industries where the shut-off of change-over operation of a seat valve is needed.

WORKING PRINCIPLE

Small single seat valves can be manually or pneumatically actuated. The SSSV maintains a simple design with only a few moving parts, making it a reliable component in any flow system.

STANDARD DESIGN

The SSSV is available in ½ inch and ¾ inch OD tube connections. The design is composed of an actuator, lip seal, plug, and one or two valve bodies. The unique plug design is made from PVDF and the valve body interior has a 20 ?inch Ra surface finish for high cleanability. The valve maintains an open yoke design and is authorized to carry the 3A symbol. Valve bodies and actuators are connected via a clamp connection. The piston and valve plug maintain a threaded connection. Tri-Clamp or weld connections are standard.

MATERIALS

Product Wetted Steel Parts 316L
Finish (ID) <20 Ra Standard
Other steel parts 304
Plug PVDF
Product wetted seals EPDM (standard), HNBR, FPM (optional)
Other seals NBR
Material grades Molded elastomers of EPDM or SFYO-rings and seals of EPDM or SFY (Flouroelastomer)

TECHNICAL DATA

Max product pressure 145 psi
Min product pressure Full vacuum
Temperature range 14°F – 284°F (EPDM)
Air pressure 14.5 – 101.5 psi

ACTUATOR FUNCTION

  • Pneumatic downward movement, spring return (NO).
  • Pneumatic upward movement, spring return (NC).
  • Manually operated.

DIMENSIONAL DATA

½ in ¾ in
A1 6.78 6.74
A2 7.06 7.17
A3 7.88 8.24
A4 8.16 8.67
C 1.27 1.50
OD 0.50 0.75
ID 0.37 0.62
t 0.06 0.06
E1 1.17 1.18
E2 1.77 1.77
F1 0.28 0.43
F2 0.28 0.43
H 2.24 2.24
Weight (lb) Stop valve 2.36 2.43
Weight (lb) Change-over valve 3.00 3.11

*Dimensions valid for both welding ends and clamp ends.

Description

Double Seat Valve: (see also MixProof Valves)

Alfa Laval – Double Seat Valves

Alfa Laval’s double seat valve concept provides modular solutions that are easily tailored to any specific requirement. It is also known as MixProof Valves. The double seat design provides long-lasting, spillage-free operation thus minimizing the risk of product contamination. The use of double lip seals provides added protection to ensure safe and hygienic operation.

Related Industries:

Processed Foods, Dairy, Beverages, Brewery, Home & Personal Care, Agriculture Processing

DescriptionDetails

TRI-CLOVER® 736 SWAP VALVE

Do you have Tri-Clover® 361 valves in your facility? If you’re ready for newer technology, but not able to make the change to a new valve body, ABS offers the Tri-Clover 736 “swap” valve from Alfa Laval may be the solution. The 736 valve was designed specifically to bridge the gap when an older 361 valve fails, but a complete valve upgrade isn’t feasible. Since the swap valve consists of a complete 761 style valve, installation is quick and easy, with no cutting or welding required.

The 736 valve provides the same reliable, sanitary, and flexible design you expect from any of Alfa Laval’s 700 series valves. A variety of options allow you to customize the valve to your system’s needs. Even if you’re not ready for a complete overhaul of your system, you can still look forward to many more years of reliable performance to your valves with the 736 valve.

Related Industries:

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

APPLICATION

The 736 valve is used to convert existing welded-in Tri-Clover 361 series shut off valves into a version of the Tri-Clover 700 series valve. This conversion provides an upgrade to all features and benefits of the Tri-Clover 700 series, without cutting or welding.

WORKING PRINCIPLE

The valve is remote-controlled by means of compressed air. It has few and simple movable parts, contributing to a very reliable valve.

STANDARD DESIGN

Like all 700 series valves, the 736 valve is designed to deliver years of reliable performance. Utilizing a specially designed bonnet, it’s easy to replace existing 300 series shut-off valves:

1. Remove the body-bonnet clamp

2. Pull the 300 series components (from stem to the actuator) out of the existing 300 series valve body

2. Replace with the 736 swap valve and gasket

4. Reattach with the provided body-bonnet clamp

The 736 valve design utilizes all 761 valve spares and features including ThinkTop and GreenTop indication units, TR2, and LP elastomer stems, with high-pressure and “sealed-for-life” reversible actuators.

ACTUATOR FUNCTION
  • Pneumatic downward movement, spring return (NO)
  • Pneumatic upward movement, spring return (NC)
  • Pneumatic upward and downward movement (A/A)
  • Actuator for intermediate position of the valve plug as option
MATERIALS
Product Wetted Steel Parts 316L
Other Steel Parts 304
Plug Stem Buna bonded or “TR”/”TR2” PTFE replaceable (standard)
EPDM or SFY (optional)
Product Wetted Seals Buna (standard)
EPDM or SFY (optional)
TECHNICAL DATA
Max Product Pressure Depends on valve specification and size (contact CSI)
Max Temperature 200 – 284°F (EPDM)
Air Pressure 60 – 80 psi
DIMENSIONAL DATA

Valve Size (Tube OD)
(in)		 A – Short
(in)		 A – Long
(in)		 C
(in)
2.0 17.32 21.25 3.50
2.5 17.56 21.53 3.50
3.0 18.06 22.03 3.75
OPTIONS
  • Control and indication (Control Top or ThinkTop®)
  • High pressure actuator for 2.5 and 3.0 inch sizes
  • Three position actuator
  • Long stroke actuator
PRESSURE DROP/CAPACITY DIAGRAMS

Shut-off valve flow pattern: B to A (solid curve), A to B (broken curve)

Note! For the diagram the following applies:
Medium: water (68°F)
Measurements: In accordance with VDI 2173

DescriptionFeaturesHow It WorksDetailsDocumentation

Scandi Brew (SB) Mini Flow Valve

Ideal for handling small flows when hygienic shut-off and change-over are required, the Alfa Laval SB Mini Flow Valve is used to close or divert the flow of liquids or gases in a broad range of applications in the brewery, food, dairy and beverage industries. The valve can be used as an integral part of a SCANDI BREW® tank top system.

Related Industries: 

Food Processing

Versatile shut-off or changeover valve

With its cost-effective modular design, the multi-application valve can easily be configured either as shut-off valves or change-over valves to meet virtually any requirement. Choose from a pneumatic angle valve, pneumatic two-way valve, drain valve with fittings or drain valve with fittings and clip-on.

Hygienic design

Made of 316L product wetted steel parts, the Alfa Laval SB Mini Flow Valve is designed for fast, easy cleaning, thereby minimizing the risk of contamination. The valves are supplied with threaded pipe couplings for 6/8-mm pipe.

Construction

The valve comprises valve body, inlet and outlet. It can be used as an integral part of a SCANDI BREW® tank top system.

Operating principle

The valves are in pneumatic or manual execution.

Concept
The valve program, which comprises of angle and change over valves,
is designed for working in a gas and liquid environment, where shut off
and change-over functions are required under sanitary conditions.

Working principle
The valves are in pneumatic or manual execution.

Standard design
The valves are supplied with threaded pipe couplings for 6/8 mm pipe.

TECHNICAL DATA
Max. product pressure: . . . . . . . . . . 6 bar
Process air pressure: . . . . . . . . . . . . 6 – 8 bar

PHYSICAL DATA
Material Specifications
Product wetted steel surfaces: .EN 1.4404 (AISI 316L)
Product wetted seals: . . . . . .EPDM
Product wetted polymers: . . . .PTFE

Alfa Laval SB Mini Flow Valve – Product Leaflet – ESE02914