the Alfa Laval unique mix proof LP valve range is specifically designed to handle products containing large particles as well as highly viscous products in mix proof processes equipped with the Alfa Laval think top sensing and control unit the unique mix proof LP is built on the proven unique mix proof platform with position detectable valve seat it meets the u.s. pasteurized milk ordinance known as PMO for pasteurized milk and milk products double block and bleed protection is provided in a single unique mix proof LP valve to ensure hygienic and safe separation of products the valve automatically returns to the closed position in the event of air supply failure this enables the safe handling of two different products at the same time or the flow of product through one valve housing while hygienic seat lift cleaning operations occur in the other without any risk of cross-contamination the unique mix proof LP valve provides highly reliable operations to ensure safe operation and maintenance the actuator features a straightforward design cage spring and simple seal arrangement it also has low where seals defined metal-to-metal movement and no adjustable parts it contributes to low operating costs due to the precision opening and closing of the valve which minimizes air consumption a sensor on the yoke transmits the position of the upper seat to the think top sensing and control unit the valve body features a top loaded design with clamps for ease of dissembler and reassembly during routine maintenance the valve body has built-in leak detection defined compression of the static seals and double-acting lip seal technology which eliminates the risk of product contamination mix proof LP valve configurations are visibly marked on the external surfaces of the plugs with its high genic double block and bleed design the mix proof valve has two independent plugs each with a single seal for long-lasting operation the lower plug has a radial seal hydraulically balanced the plug provides reliable mix proof capabilities even in the event of pressure shocks in the process pipe the unique mix proof LP valve can be fitted with a lower flush sealing element to provide thorough cleaning of the outer diameter of the lower plug balancer this ensures 100% clean ability of the lower plug during seat push which is especially of interest for applications that require continuous process capability when the valve is configured without the lower flush sealing element the lower balancer is fitted with a different static sealing arrangement as identified by a blue shroud the Alfa Laval mix proof LP valve is designed to support continuous processing of highly viscous products or products containing large particles the valve provides a low total cost of ownership thanks to reliable and continuous operation reduced utilities consumption low maintenance costs and reduced spare parts inventory it is completely safe to clean the upper valve body and plug seal while product flows through the lower section of the valve body when cleaning the upper plug seal the fast-acting seat lift always creates a throttling edge due to the defined metal-to-metal stop in the actuator this speeds the cleaning process by creating high turbulence and scrubbing effects thereby minimizing CIP fluid consumption it also reduces pressure of the CIP fluid and promotes risk-free cleaning because there is no risk of pressure buildup in the leakage chamber Alfa Laval unique mix proof LP valves enable the simultaneous flow of two different products all fluids through the same valve without any risk of cross-contamination like the seat lift operation the fast-acting seat push function is controlled within the actuator by a defined metal-to-metal opening which provides a throttling edge thus speeding up the cleaning process and uses minimal CIP fluid it is important to adjust the duration of a seat lift or seat push operation to match the requirements of the process and product if necessary multiple seat lift operations can be performed cleaning the outer diameter of the lower plug balancer is highly recommended especially for processes carrying highly viscous products the unique mix proof LP valve can be equipped with an optional lower flush to enable 100% clean ability of the valve through seat lift cleaning alone this ensures that clean ability of the lower plug both the internal and external surfaces is in accordance with the three a sanitary standards the unique mix proof LP valve is designed to enable the passage of large particles up to 45 millimeters in size between the upper and lower sections of the valve body this makes the valve ideal for viscous fluid applications such as beer wort syrups and slurries or particulate products such as cheese curd as well as fruit meat and vegetable Chuck's opening the valve is a two-step movement first the actuator retracts the lower plug pulling it up into the upper plaque then it continues to lift both plugs into the fully open position closing the valve also requires two steps the actuator moves the upper plug into the axial seat then the lower plug with its radial seal is guided into position to provide long lasting operation