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Laufer Valve

2-Way Control Shutter Valves

Ideal for controlling sensitive media containing solid particles

On account of their favorable flow characteristic, LIAG® free flow shutter valves are particularly suited for proportioning viscous and pasty products. Depending on the product to be proportioned LIAG®  control shutter valves can be delivered with various shutter qualities and linearization inserts. Control is performed via a standard 4-20mA (0-10V) electro-pneumatic actuator.


  • No dead pockets
  • CIP/SIP capability
  • Product-saving proportioning
  • No product remainders or sticking of solid particles
  • Full linearization option of control characteristic
  • Minimum number of components and wearing parts
  • Can be completely dismantled even when welded in place
  • 3-A 51-01 and FDA compliance
  • Identical wearing and spare parts as shutter valves
  • CRN

The control characteristic / rate of flow or the control range can be adapted to customers requirements.


Data Sheets

Control 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.

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)
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:3 bar (43.5 psi) 
Electro-pneumatic control unit consisting of:
  • Pneumatic actuator 0°-90°
  • Positioner Positurn 4-20mA (0-10V), 24V DC, IP65
Valve connection:
Clamp connection:Tri-Clamp
Weld ends:Inch, DIN
Male ends:DIN 11851
  • Linearization insert - mechanical adaptation of control characteristic
  • Electric actuator with MOD positioner 4-20mA (0-10V), 220-240V, 50/60Hz / IP65 / 0°-90° (110V AC-version upon request)
  • Shutter material, alternatively glass-fiber reinforced Teflon (GL25), Tecapeek®
  • Heated version
  • Leakage control of moving O-ring seal / steam barrier with ball-bearing supported selector shaft
  • EHEDG certified CIP/SIP capability (hygienic design)
  • 3-A 51-01 and FDA compliance
  • CRN

© 2019 LAUFER Valve Technology Inc.