General Details

Flexible Metal Hose Lined with Smooth PTFE Liner

  • Corrosion Resistant
  • Cleanable
  • Flexible

304 S.S. flexible metal hose lined with smooth PTFE liner and flared thru standard end fittings. Designed for applications requiring a large diameter smooth bore flexible hose combining the unexcelled corrosion resistance and sanitary properties of PTFE and the durability of flexible metal hose. This smooth bore hose is specified and used in an endless variety of applications where the conditions of service are beyond the capabilities of rubber, synthetic or metal hose alone. The PTFE smooth bore I.D.’s minimize pressure drop. MTH is available with virgin PTFE liner.

Temperature Range: -65°F(-54°C) to +450°F(232°C)
70°F (psi)
450°F (psi)
Per Ft.
1 1 1/2 285 285 29.9 12 1.2
1 1/2 2 1/4 285 285 29.9 15 2.1
2 2 5/8 285 285 29.9 21 2.8
3 3 11/16 285 285 29.9 28 3.0
4 4 7/8 230 230 29.9 46 4.0
6 7 1/8 150 150 29.9 65 8.9
8 9 1/4 150 150 29.9 89 16.0
10 11 3/8 100 100 24.0 120 20.0

Above working pressures are listed for assemblies constructed with ANSI/ASME B16.5 CL150 flanges, consult factory for ratings with CL300 flanges. Minimum allowable temperature applicable only to stainless steel flanged assemblies; carbon steel flanged assemblies are limited to -20°F.

  • Corrosion Resistant – PTFE is fully resistant to the broadest range of industrial chemicals and has a zero corrosion rate, lower life cycle costs and is non-contaminating.
  • Cleanable – Non-Stick, low porosity tube does not trap bacteria, and can be readily cleaned with steam, detergents, caustics or solvents.
  • Sanitary – FDA approved materials meet or exceed 3A requirements.
  • Compatible – Will not contaminate or impart a taste, color or odor to any media.
  • Durable – Designed for extended use in hostile environments involving severe chemical, thermal and mechanical stresses. Does not suffer aging or embrittlement, even with extreme thermal cycling.
  • Double containment – Metal housing is a secondary containment vessel.

PTFE “Flared-Thru” Fitting:

The thick PTFE tube passes through the end fitting and is flared radially outward against the sealing face of the fitting. This economical design creates a continuous PTFE fluid conduit. Standard fitting style available is Flanged. Flange materials available in Epoxy coated Carbon Steel, 304 S.S. and 316 S.S.

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