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LIAG® DMV Pigging System

Hygienic - Modular - Efficient

Process systems cleaned with pigs are becoming increasingly important for hygienic processes. Increased environmental consciousness, costly waste water treatment and product losses, superior hygienic standards and production streamlining are some of the factors speeding adoption of product recovery systems.


  • Minimum product loss
  • Safe separation of product - no mixed phases
  • Faster changeovers
  • Maximum product quality
  • Reduction of time consuming cleaning and waste water generation
  • Environmentally sound systems

Sterile processes pose stringent demands on system components

For these processes we offer DMV pigging systems featuring CIP/SIP LIAG® free flow shutter valves and specifically designed pig launching and receiving stations without dead pockets. Simplifying the modular component design, thread and clamp unions are virtually no longer needed, minimizing typical hygienic risk areas by design. All LIAG® shutter valves, even when welded in place, can be easily disassembled for maintenance.

Operating procedures


Data Sheets

DMV-lip pig

Project Data Sheet Pigging System


LIAG® DMV Pigging System (3-A 101-00)


LIAG® DMV Pigging System

DMV lip pig - reliably tight

The DMV pigging System works with a 2-seal lip pig and are of homogenous hygienic design. They offer excellent cleaning effect and are virtually free of wear. Two dynamic lips form

The pigs are highly flexible and can pass tight radíi (R= 1.5 x D). Dynamic lip pigs are optionally equipped with a magnet for location and control. The action of pressure and counter-pressure forms the seal to the pipe wall, compensating for minor deviations in the pipe geometry, and providing a reliable seal with the pipe wall.


  • Sterile and closed pipe system
  • No dead pockets with LIAG®  CIP/SIP capable free flow shutter valves
  • Optimized cleaning result with dynamic DMV lip pigs
  • Capable of passing 90° standard bends (R= 1.5 x D)
  • Available with in-system cleaning of the pig
  • Optimally suited for hygienic processes and highly viscous fast hardening media, e.g. yoghurt, dressings, softcheese, chocolate, tooth paste, etc.
  • Optionally 3-A 101-00 and FDA compliance

DMV pig launching and receiving station

To satisfy the diverse requirements of the wide range of processes, the optimum pigging procedure is always designed to the specific project.

Technical Data Overview

Nominal sizes:
Basic facts:
Radius of the bends:capable of passing 90° Standard bends R= 1.5 x D
Multi mode:Manual, semi or fully automated
DMV pushing media:e.g. product, water, air etc.
Inox parts in contact with product:AISI 316L (1.4404 / 1.4435)
Other inox parts:AISI 304 (1.4301)
O-ring seals:EPDM, FKM (Viton®), FEP, other grades upon request
Shutter:DyneonTM TFM 1600, alternatively: Teflon +15% Peek, Tecapeek®
DMV lip pig:Silicone with FDA compliance
In contact with product:Ra ≤ 32µin (Ra ≤ 0.8 µm)
Short-term:284°F (140°C) - Optional up to 392°F (200°C)
Range of temperature:
Standard:-13°F (-25°C) up to 230°F (+110°C)
Optional: -13°F (-25°C) up to 302°F (+150°C)
Pushing pressure DMV lip pig:
Depending on product (viscosity) and length of pipe work:min. 14.5psi - max. 145 psi (min. 1 bar - max. 10 bar)
Further option:
3-A 101-00 and FDA compliance
Important note:
DMV pigs should only be used in pigging Systems, which are designed for this type of pig. The supplier will not assume any kind of function warranty or product liability and no responsibility for any kind of damage to persons or property due to improper use.

ROI calculator

Enter specific values for your application into the white fields. All grey fields are fixed calculated values. Press the calculation button to calculate totals. For decimal values please use the "dot" symbol.

Select pipe dimension
Volume per meter[liter/m]
Enter total length of pipe in the line[m]
Total volume in the line[liter]
Enter product weight per volume[kg/liter]
Total weight in the line[kg]
Enter product price per kilogram[value/kg]
Product savings each use[value]
Enter waste treatment & disposal cost per kilogram[value/kg]
Waste treatment cost savings[value]
Total cost savings each use[value]
Enter number of pigging operation per week[ ]
Total savings after 1 year[value]

For further information please contact us.

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