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LIAG Pigging Valves

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MolchweicheFields of applications

LIAGpigging valves have been designed according to hygienic design guidelines to meet the high demands of process engineering applications. They build upon the same design principle as LIAGarc valves. By virtue of this principle no products remain in the valves during operation. The prime use of LIAGpigging 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.

With LIAGpigging valves, threaded connections, which can present potential hazards, are virtually no longer needed. Further features of these models are their comparatively small assembly dimensions and their ease of conversion.

Features

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


Operating positions

Pigging valve
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Technical Data Overview

Nominal sizes:
DIN DN40 - DN 100 / SMS DN38 - DN102 / Inch 1,5" - 4"
Materials:

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

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

Surfaces:

In contact with product:

Ra ≤ 0,8 m (Ra ≤ 32in)

Temperature:

Operating temperature:
Short-term:

110C (230F)
140C (284F) - optionally up to 160C (320F)

Operating pressure:

Pressure behind arc:
Pressure against arc:

10 bar (145 psi) - optionally up to 20 bar (290,1 psi)
3 bar (43,5 psi)

Version:

3-way (3x120)

Valve connection:

Welded ends:
Male ends:
Clamp connection:

DIN, Inch (SMS, ASTM)
DIN 11851, SMS 1145
Tri-Clamp

Further options:
  • Shutter material; alternatively glass-fiber reinforced teflon (GL25), Techtron, Tecapeek
  • Heated version
  • Combination of different types of connection
  • Delivery and adaptation to actuators of different manufacture per Namur DIN ISO 5211 (pneumatic, electric, 120 / 240)
  • 3-A approval / FDA
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