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Flexible tubes

 

Flexible tubes are relatively small-diameter bellows used for piping of equipment that can be bent flexibly.

We are a manufacturer of stainless steel flexible tubes.

  • Flexible bending facilitates connection of piping.
  • Tube lengths can be easily set.
  • Connection of vacuum piping is a standard specification of our flexible tubes.

Standard flexible tubes

Since March 2014, we have reviewed the procurement of flexible tubes from the viewpoint of BCP measures. We offer stainless steel flexible tubes that are convenient for piping connection of vacuum equipment and have flexible corrosion resistance,as added new products (10A - 100A) to the four types of conventional standard products.

Standard Specifications

Pressure Conditions (Internal) vacuum
(External) atmospheric pressure
Temperature Conditions Ordinary temperature (baking temp. max. 250°C)
Leak rate 1×10-7 Pa・m3/s or less(CF flange only:1×10-9 Pa・m3/s or less)

NW-KF type (VF 1000 / VFP 1000)

With an NW flange at both ends
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Length:500,1000,1500,2000mm
Tube: Stainless steel
Flange: Stainless steel

 

CF FLANGES type (VF 2000 / VFP 2000)

With CF stationary × CF rotating flanges
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Length: 500,1000,1500,2000mm
Tube: Stainless steel
Flange: Stainless steel

JIS FLANGES type (VF 3000 / VFP 3000)

With CF stationary × CF rotating flanges
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Length: 500,1000,1500,2000mm
Tube: Stainless steel
Flange: Stainless steel

 

TUBE END type (VF 4000 / VFP 4000)

With a tube end at both ends
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Length: 250,500,800,1000mm
Tube: Stainless steel
Flange: Stainless steel

Individually Designed Product

Even if standard products do not meet the specifications
We will consider them individually.

  • I want a more compact design
  • I want to allow displacement in directions other than the axial direction.
  • I want to use it for pressurization as well.

If you have a specific request such as, please let us know the details of your specifications.
Please feel free to contact us as we will propose the optimal design for various uses.

Welded Belows

Welded Belows

Molded Bellows

Folded Bellows

Flexible Tube

Flexible Tube

FAQ

Q

Are there any handling precautions?

A

Do not bend the flexible tube to dimensions below the minimum bend radius, as this may deform the flexible tube and prevent it from performing.

Q

Is there anything I should be aware of when ordering?

A

Our flexible tube standard products have standard specifications for operating environments and lengths.
If you intend to use the product in a manner other than the standard specification, please contact us as individual design may be required.

Q

What is the difference between VF and VFP?

A

The range includes two standard products with the same flange size and different tube diameters. Choose from VF and VFP for inside and outside diameter dimensions and bend radius, depending on the application.

Related Information

Column

Solution Example

Technical Information

Please take a look at the technical information on bellows.

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Inquiry

For document requests and inquiries,
Please contact us using the email form below or by phone.