PTFE bellows

Applications of PTFE bellows

PTFE bellows are widely used in the chemical industry due to the good chemical resistance of the material. PTFE bellows are used in many applications:

  • To compensate vibrations, motion and displacements between two connecting components;
  • To protect piston rods, linkages and other machine parts involving axial and in some cases radial motion;
  • In combination with check valves, bellows can be used to circulate or pump gases and liquids using volume changes.
PTFE bellows

Two types of PTFE bellows

Polarttech offers two types of PTFE bellows:

V-bellow The V-bellow has a longer extended length than the M-bellow, but is less resistant to pressure. The V-bellow has a long durability when used in low-pressure piping systems, that move continuously through expansion. This type bellow has the greatest flexibility and the shortest fitting dimension in relation to the extended length.
 M-bellow The M-bellow can resist a higher pressure than the V-bellow. The M-bellow is suitable for higher pressures and vacuum applications in, for example, piping systems. This type of bellow has a thicker wall thickness. That makes the bellow more rigid than the V-bellow. In addition, the mounting length is longer and the M-bellow is less flexible than the V-bellow. M-bellows are often used to absorb light vibrations or movements.

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