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ARC Valves

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BogenventilFields of applications

LIAGarc valves have been designed to meet the high demands of process engineering applications. LIAGarc 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.

This valve series thus 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, arc valves are characterized byhigh hygiene, low maintenanceandsafe operation.


  • No dead pockets
  • CIP/SIP capability (EHEDG certified)
  • Totally clear passage - no pressure loss
  • No product remainders or sticking of solid particles
  • Designed to be passed with LIAGsiilicone lip pigs
  • Minimum number of components and wearing parts
  • Can be completely dismantled even when welded in place
  • Optionally with 3-A approval / FDA

BogenventilOperating positions

2-way arc valve
3-way arc valve

Technical Data Overview

Nominal sizes:
DIN DN25 - DN 150 / SMS DN25 - DN102 / Inch 1" - 6"

Inox parts in contact with product:
Other inox parts:
O-ring seals:

AISI 316L (1.4404 / 1.4435)
AISI 304 (1.4301)
EPDM, FPM (Viton) FEP, other grades upon request
Hostaflon(PTFE TFM1600)


In contact with product:

Ra ≤ 0,8 m (Ra ≤ 32in)


Operating temperature:

110C (230F)
140C (284F) - Optional bis 160C (320F)

Operating pressure:

Pressure behind arc:
Pressure against arc:

10 bar (145 psi) - Optional bis 20 bar (290,1 psi)
3 bar (43,5 psi)

  • 2- / 3- / 4-way
  • Version with 4-20mA control (mechanical or digital linerarization)
Valve connection:

Welded ends:
Male ends:
Clamp connection:

DIN 11851, SMS 1145

Further options:
  • Shutter material; alternatively glass-fiber reinforced Teflon (GL25), Techtron, Tecapeek
  • Heated version
  • Leakage control of moving O-ring seal / steam barrier with ball-bearing supported selector shaft
  • Combination of different types of connection
  • Delivery and adaptation to actuators of different manufacture per Namur DIN ISO 5211
  • 3-A approval / FDA

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