HOME
ABOUT US
VALVES
PIGGING SYSTEMS
NEWS
DOWNLOADS
CONTACT
suchen:
Arc Valves
Pigging Valves

DIN

SMS

Inch

Accessories and spare parts

2-Way Control Arc Valves
Non Return Valves
Swivel Joint Union
Sight Glasses
Telescope Pipes

Pigging Valves

Fields of applications

MolchweicheLIAG® pigging 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 LIAG® arc valves. By virtue of this principle no products remain in the valves during operation. The prime use of LIAG® pigging 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 LIAG® pigging 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 LIAG® siilicone 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
 3Wege-Molchweiche.gif
 


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 µm (Ra ≤ 32µin)

     
Temperature:

Operating temperature: 

Short-term:                

  

110°C (230°F)

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

     
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