Flexible Metal Hose Assemblies – Stainless Steel Hose

Flexible Metal Hose Assemblies

Buckley Industrial supplies an extensive range of flexible metal hose assemblies.The variations in the shape and pitch of convolutions reduce the design limitations,
whilst being able to offer different materials means we can supply a product suitable
for a wide range of media that needs to be conveyed.

Stainless Steel Hose Assemblies    

Stainless steel is the most common metal used to produce flexible metal hose
assemblies.  They can be supplied with up to three highly compact stainless steel
braids depending on the type and bore of hose which enables them to perform at
elevated pressures.

Light Weight, Medium Flexibility Hose
Key Features

  • Construction: Annular hose with a standard pitch
  • Hose material: 316L and 321 stainless steel (others on request)
  • Braid material: 304L/316L
  • Characteristics: lightweight / medium flexibility
  • High coverage braid
  • Hose sizes: 1/4″ through 2″
  • No Braid/Single Braid/Double Braid

Medium Weight, Medium Flexibility
Key Features

  • Construction: Annular hose with a standard pitch
  • Hose material: 316L and 321 stainless steel (others on request)
  • Braid material: 304L/316L
  • Characteristics: Medium Weight / Medium Flexibility
  • High coverage braid
  • Hose sizes: 1/4″ through 14″
  • No Braid/Single Braid/Double Braid

Heavy Weight, Medium Flexibility
Key Features

  • Construction: Annular hose with a standard pitch
  • Hose material: 316L and 321 stainless steel (others on request)
  • Braid material: 304L/316L
  • Characteristics: Medium Weight / Medium Flexibility
  • High coverage braid
  • Hose sizes: 1/4″ through 6″
  • No Braid/Single Braid/Double Braid
  • Medium Weight, Medium Flexibility

Key Features

  • Construction: Annular hose with a standard pitch
  • Hose material: Monel 400
  • Braid material: Monel 400
  • Characteristics: Medium Weight / Medium Flexibility
  • High coverage braid
  • Hose sizes: 1/4″ through 3″
  • No Braid/Single Braid/Double Braid
  • Medium Weight, Medium Flexibility
    Key Features
  • Construction: Annular hose with a standard pitch
  • Hose material: Inconel 625
  • Braid material: Inconel 625
  • Characteristics: Medium Weight / Medium Flexibility
  • High coverage braid
  • Hose sizes: 1/4″ through 4″
  • No Braid/Single Braid/Double Braid

Selection Criteria

The selection of flexible metal hose for a particular application is influenced by six
primary considerations:

  • Temperature
  • Pressure
  • Media
  • Size
  • End Fittings
  • Motion
    To make the best choice for a specific application, consider all the relevant operating
    factors against the properties of the various types of flexible metal hoses.

Temperature

The physical properties of any material vary with temperature. Limits for operating
temperature are affected by the working pressure, the type of media being conveyed
and the nature of the application. By careful selection of material, it is possible to
provide flexible metal hose for a wide range of operating temperatures. The choice of
hose type, metal alloy, end fitting and method of fitting attachment determines the
temperature limit.

Pressure

The nominal pressure ratings of flexible metal hose vary according to type, material
and size. Under actual working conditions, the pressure is affected by many other
factors such as temperature, pulsating conditions and bending stresses.

Media

The type of media being conveyed is an important consideration in the selection
process. Metal hose is subject to corrosion by both the material flowing through it
and the outside environment. For almost all applications, a metal hose can be
selected that is resistant to the intended media. Since the metal hose is a thin-walled
product, it will not have the same total life as heavier walled tube or pipe of the same
material.

Size

The size of the flexible metal hose is specified by the nominal diameter. The existing
piping will normally dictate the size of the metal hose for a particular application.
However, flow rate, velocity and pressure drop considerations may also influence the
selection of the hose size.

End Fittings

The use of flexible metal hose is complemented by the extensive range of end fittings
that are available. Such end fittings may be male or female pipe threads, unions,
flanges, flared tube fittings or other specially designed connectors. End fittings are
attached by welding, silver brazing, soldering and occasionally by mechanical
means, depending on the type of hose and the alloy.

BSPT and NPT Fixed Males in MS or SS, BSP Cone Seat Females in MS or SS,
Elbows, Metric & JIC fittings and many more
We can also supply SS Hose Assemblies with Aeroquip low air inclusion refrigerant
couplings self-sealing.
For further detail on the appropriate type of end fitting please consult our sales team

Motion
Flexible metal hose is generally used in four types of applications.

• To correct problems of misalignment.
• To provide flexibility in manual handling operations.
• To compensate for regular or constant movement.
• To absorb vibration.
In all types, careful hose selection, design of the assembly and installation are
important for optimal service life. The flexibility of a hose is determined by its
mechanical design and the inherent flexibility of its material.

Please contact our sales team to find out more about our other metallic hose
assemblies if your application demands a different product than those listed.

All hose assemblies supplied by Buckley Industrial comply with the Pressure
Equipment Directive (EC/97/23)