LIAG® Free Flow Arc Valves

Ideal for pasty media and hygienic pigging processes

LIAG® free flow 3A arc valves have been designed according to hygienic guidelines to meet the high demands of process engineering applications. LIAG® valves are particularly suited for viscous/pasty products and fluids containing solid particles on account of a totally clear passage, as well as, easy and thorough cleaning in place. LIAG® 3A valves have also passed the testing requirements for CIP/SIP capability.

This valve series provides optimum conditions for a wide variety of pigging system applications. By virtue of their simplicity of design and minimum number of components and wearing parts, LIAG® valves are characterized by high hygiene, low maintenance and safe operation.

Operating positions

2-way arc valve

3-way arc valve


  • 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 LIAG® DMV lip pigs
  • Minimum number of components and wearing parts
  • Can be completely dismantled even when welded in place
  • 3-A (51-01) and FDA compliance
  • CRN
  • 1"– 6"