The Alfa Laval Unique Mixproof Large Particle-Flush (LP-F) Valve is a versatile, highly flexible double block-and-bleed valve for the safe and efficient management of fluids at intersection points in matrix piped systems. The valve enables the simultaneous flow of two different products or fluids with large particles through the same valve without the risk of cross-contamination.
Modular design and a wide variety of options enable the valve to be customized to meet any process requirement – whether higher demands on cleanability, the ability to withstand high pressure. The valve is designed for gentle handling of products containing large particles up to 1 3/4″ (45 mm) or products with high viscosity.
Unlike the Unique Mixproof LP Valve, the Unique Mixproof LP-F Valve is equipped with a lower flush for 100% cleanability of the lip seal in the lower sealing element through seat-lift cleaning alone. It also reduces the need for additional utility installations for external Cleaning-In-Place.
Application
The Alfa Laval Unique Mixproof LP-F Valve is designed for use hygienic processes that require product safety and continuous flow management of fluids with large particles that require gentle handling and thorough cleaning across the dairy, food, beverage, and a variety of other industries.
Standard Design
The Alfa Laval Unique Mixproof LP-F Valve is comprised of a series of base components, including valve body, valve plug and actuator that support a wide range of applications. It is supplied with a seat lift cleaning function, which enables handling of two different products at the same time, or safe handling of one product while seat-lift cleaning operations are being conducted in the other portion of the valve – all without any risk of cross-contamination. When performing seat lift of the lower plug, the valve simultaneously cleans the lower plug seal as well as the lip seal of the lower sealing element.
There are two sizes: 4″ and 6″. The standard 6″ valve comes equipped with balanced lower plug to protect against the effects of pressure peaks and water hammer. To accommodate 1 3/4″ (45 mm) particles, the 4″ valve is not equipped with a balanced lower plug but comes with a boost actuator to accommodate a product pressure of up to 10 bar.
Leakage detection holes enable visual inspection without requiring valve disassembly and provide advance notification of part wear. Few straightforward moveable parts contribute to reliable operation and reduced maintenance costs.
Working Principle
The Alfa Laval Unique Mixproof LP-F Valve is a normally closed (NC) valve controlled from a remote location by means of compressed air. The valve has two independent plugs and seals to separate the liquids; the space between the seals forms as a leakage chamber at atmospheric pressure during every working condition. Leakage rarely occurs but, should it occur, product flows into the leakage chamber and exits through the bottom outlet for easy detection.
When the valve is open, the leakage chamber is closed. Product then flows from one line to the other. The radial design of the valve ensures that virtually no product spillage occurs during valve operation. It is possible to adept valve cleaning and water hammer protection to the requirements of individual process specifications.
Benefits
- Enhanced product safety
- Spillage-free operation
- Gentle product handling
- Optimized plant efficiency and enhanced cleanability
- Lower lip seal flush
Cost effective mixproof valve
Alfa Laval Unique mixproof valves feature two independent plugs, which means that a single Unique Mixproof Valve can often replace two or more valves of other types.
Exceptional spillage-free operation
A state-of-the-art 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.
Easy valve to maintain and clean
Unique mixproof valves feature a top-loaded design, making maintenance fast and easy. It also features no adjustable components, a maintenance-friendly actuator and built-in leakage detection on all seals. Unique mixproof valves meet most hygienic standards and can be supplied with the optional SpiralClean cleaning system.
You get the full benefit of using Unique mixproof valves by combining them with Alfa Laval ThinkTop and ThinkTop Basic valve sensing and control units.
State-of-the-art horizontal mixproof valve
Based on the well proven and exceptionally versatile principle of the Unique Mixproof Valves , this horizontal mixproof tank valve features many of the same components, such as the actuator, yoke and seals, and the same spare parts. This provides the benefits of easy serviceability and low total cost of ownership.
Alfa Laval Unique Mixproof Horizontal Tank Valve, can be fitted with any level of sensing and control. It is as standard supplied with seat lift, which enables handling of two different products at the same time, or safe handling of one product while seat-lift cleaning operations are being conducted in the other portion of the valve – all without any risk of cross-contamination. The double tangential design of the valve body ensures full drainability, especially when the valve is mounted at the bottom of a flat-bottomed tank.
Valve clusters – customized flow solutions
Alfa Laval Valve clusters can be supplied pre-assembled and pre-tested as well as fully wired and with all the necessary pneumatic tubing, junction boxes and control panels pre-connected. Alfa Laval are specialists in providing pre-built valve clusters customized to meet specific, individual requirements. Its expertise helps you ensure the most efficient flow management, using as few components as possible and dealing effectively with key issues that include thermal cycling, cleanability, drainability and flow control. This means you can bring even complex installations online as quickly as possible, saving time and avoiding lost revenue associated with on-site troubleshooting and downtime.
