Style 214 / 215 PTFE Expansion Joint Couplings

Style 214 / 215 PTFE Expansion Joint Couplings

Expansion Joints » Style 214 / 215 PTFE Expansion Joint Couplings

PTFE Spool-Type Flexible Couplings These PTFE concentric spool-type flexible couplings are designed to reduce noise and compensate for expansion, contraction, and minor piping misalignment in chemical processing, air conditioning, and heating systems. Style 214 has 2 convolutions, while Style 215 has 3 convolutions.



  • Convolution shape provides extra-long flex life at high temperatures
  • Proprietary contour molding process ensures consistent wall thickness for blowout resistance
  • PTFE body withstands corrosion, water, steam, and most chemicals and gases
  • Higher pressure and temperature ratings mean extended service life in most piping systems
  • Preset restriction bolts prevent over-extension
  • Available silicone-free



  • Min. Temperature: -100°F / -70°C
  • Max. Temperature: 450°F / 230°C
  • Max. Pressure (Style 214): 178psi / 12bar
  • Max. Pressure (Style 215): 132psi / 9 bar
  • Max. Inner Diameter: 8in. / 200mm



  • All PTFE joints and couplings are furnished with ductile iron flanges and control units ready for immediate installation on the job site.
  • Flanges in other alloys are available by special order.
  • Flanges are protected to resist atmosphere corrosion and are tapped to 150 Ibs. ANSI Standard drilling.
  • Control units are assembled with flanges to prevent joints from excessive axial elongation.
  • They are designed to accept the static pressure thrust in the piping system.
  • Tie rods are set at the factory at the maximum face-to-face working limits, with lock nuts as insurance against overextension of the expansion joint.
  • The tie rods are covered with polyethylene to eliminate metal-to-metal contact between the rods and flanges-the most frequent cause of noise transmission and electrolysis



  • Complete assembly includes fluorocarbon resin PTFE body, plated ductile iron flanges, polyethylene-covered restriction bolts, and corrosion-resistant reinforcing rings
  • Standard sizes from 1in / 25 mm through 8in / 200 mm pipe ID
  • Pressure and Vacuum Rating
  • Garlock PTFE expansion joints and couplings have pressure ratings high enough to handle most applications.
  • As the pipe size gets larger, Garlock increases the bellows thickness and the strength of the reinforcing rings to compensate for the change in internal forces.
  • This permits the same high pressure.


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