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Laufer Valve

LIAG® Pig Diverter Shutter Valve

Ideal for hygienic pigging processes

LIAG®  pig diverter shutter valves are designed according to hygienic design guidelines to meet the high demands of process engineering applications. They build upon the same design principle as free flow shutter valves. By virtue of this principle, no product remains in the valves during operation.

The prime use of LIAG®  pig diverter shutter valves is with sterile pigging systems, as they can be disassembled easily and quickly even when welded in place, and additionally, offer high CIP capability.


  • No dead pockets
  • CIP/SIP capability (hygienic design)
  • Totally clear passage - no pressure loss
  • No product remainders or sticking of solid particles
  • Designed to be passed with DMV lip pigs
  • Compact design for 90° installation
  • Minimum number of components and wearing parts
  • Can be completely dismantled even when welded in place
  • 3-A 51-01 and FDA compliance
  • CRN


Data Sheets

Pig Diverter Shutter Valve

Further information please refer to the datasheet in PDF format.

Accessories and spare parts

Further information please refer to the datasheet in PDF format.


Sanitary Free Flow Shutter Valves

Operating positions

Pig Diverter Shutter Valve

Technical Data Overview

Nominal sizes:
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:Dyneon™ TFM1600
In contact with product:Ra ≤ 32µin (Ra ≤ 0.8 µm)
Operating temperature:230°F (110°C)
Short-term:284°F (140°C) - optionally up to 392°F (200°C)
Operating pressure:
Pressure behind arc:145 psi (10 bar) - optionally up to 290.1 psi (20 bar)
Pressure against arc:43.5 psi (3 bar)
3-way (3 x 120°)
Manual:with handle (3 locking positions)
Pneumatic:horizontal pneumatic actuator
(aluminium housing)
Valve connection:
Clamp connection:Tri-Clamp
Welded ends:Inch, DIN
Male connection:DIN 11851
Further options:
  • Shutter material; alternatively teflon +15% Peek, Tecapeek®
  • Heated version
  • Combination of different types of connection
  • Delivery and adaptation to actuators of different manufacture per Namur NE14 and DIN EN ISO5211
  • CIP/SIP capability (hygienic design)
  • 3-A 51-01 and FDA compliance
  • CRN

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