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Alfa Laval Double Seal Valves: SMP-BC

SMP-BC is a sanitary pneumatic seat valve, designed for safety and leak detection when two different products flow through only one valve. The valve is often used as a part in CIP return lines or other systems not experiencing pressure spikes offering leakage detection for greater safety.

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Double Seal SMP-BC Mixproof Valve

The SMP-BC mixproof valve is fitted with two small pneumatic normally open (NO) valves, a detecting valve and a CIP-valve.

The valve plug has two seals, which form an atmospheric leakage chamber. Any product leakage is discharged through the detecting valve. The leakage chamber may be cleaned by supplying CIP into the detecting valve. The SMP-BC is insensitive to water hammer in the product line above the plug.

For changeover valves, a single seal plug separates the lower product lines.

    SMP
    Ideal for handling sanitary process flows through matrix piping systems, SMP mixproof valves are standardized, cost-effective alternatives to Unique mixproof valves.

    Economic mixproof valves
    Alfa Laval offers two double-seal mixproof valves: The Alfa Laval SMP-BC and the aseptic version, SMP-BCA. The SMP valves enable the flow of two different media through the same valve simultaneously without any risk of cross-contamination. This increases operating efficiencies and significantly reduces operating costs.

    High application flexibility
    Based on a modular structure, SMP mixproof valves have several valve bodies and components that can be combined in various ways. These self-draining mixproof valves can, for instance, be configured as stop valves and changeover valves.

    Plus SMP mixproof valves are constructed from a series of base components, which enables valves to easily be configured to meet different requirements in sanitary and aseptic applications.

    Simplified valve maintenance
    Few moving parts, a top-loaded plug, a maintenance-friendly actuator make SMP mixproof valves easy to disassemble for quick, straightforward maintenance.

    SMP mixproof valve range
    The Alfa Laval SMP mixproof valve range offers two standard cost-effective alternatives to the premium Alfa Laval Unique mixproof valve range.

    • SMP-BC mixproof valve for applications that require additional safety, leak detection and CIP
    • SMP-BCA mixproof valve for aseptic applications
    • For more information, please refer to Documentation.

    Aseptic version
    The aseptic version of Alfa Laval's SMP mixproof valve is called SMP-BCA, which is designed for use under mixproof aseptic conditions and sterilization involving high temperatures.

    The straight forward design keeps liquids separate by using two seals on the same plug, with a leakage chamber in between.

    The PTFE / rubber diaphragm following the movement of the plug in the upper section of the valve body ensures that there is no increase in the concentration of microorganisms in the product during processing.

    Compliance with most hygienic standards
    Alfa Laval SMP valves meet most standards requested in the dairy, food and beverage, and personal care industries.



      • Reduces operating costs
      • High application flexibility
      • Compliance with most hygienic standards


      • Fittings in accordance with required standard
      • Valve sensing and control devices, including ThinkTop, ThinkTop Basic and IndiTop
      • Actuator with strong spring
      • Larger actuator for valve sizes 38-51 mm/DN 40-50
      • CIP installation kits
      • Various valve body combinations
      • Surface roughness, product wetted parts: Ra ² 0.8 µm
      • Product wetted seals of NBR or FPM
      • Service tool for actuator
      • Tool for plug seals (Necessary for changing the seals)

      At Liquidyne, we prioritize our commitment to quality and consistency. In 2017 we achieved ISO 9001:2015 Quality Management System certification to ensure we can repeatedly deliver consistently high-quality products and solutions. Being an ISO 9001 facility, together with our USP Class VI Testing, ASME Bioprocessing Equipment (BPE), and EHEDG certification guarantee, we have the methodologies to assure quality. We will quickly and accurately rectify any issues if any of our products are ever in non-conformance.

      img ‰ files/ISO_9001_Quality_Management_System_Certified.png ¶ url ‰ iso-certificate ¶ cta ‰ View Certificate ¶ txt ‰ At Liquidyne, we prioritize our commitment to quality and consistency. In 2017 we achieved ISO 9001:2015 Quality Management System certification to ensure we can repeatedly deliver consistently high-quality products and solutions. Being an ISO 9001 facility, together with our USP Class VI Testing, ASME Bioprocessing Equipment (BPE), and EHEDG certification guarantee, we have the methodologies to assure quality. We will quickly and accurately rectify any issues if any of our products are ever in non-conformance. ¶
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