Spiral Hose Designs
Anyone who thinks a hose is a trivial commodity product is mistaken. Even its construction is complex. Learn more about our hose designs.
Industrial hoses are complex products made from a wide variety of materials or combinations of materials. The reason for this diversity is the equally diverse range of applications for technical hoses.
In general, a hose consists of the following three elements: core, reinforcement, and cover.
The Construction of (Spiral) Hoses
The Soul
The liner refers to the layer of material that lines the inside of the hose. This means that all pumped media come into contact exclusively with the liner. The quality of the inner layer is therefore crucial for the hose’s safety and long service life. The medium to be pumped determines the choice of liner.
The Insert
The reinforcement (fabric, textile, or wire) between the core and the hose cover provides the hose with the necessary mechanical strength to withstand the pressure or vacuum of the fluid being transported. In addition, the reinforcement material prevents the hose from kinking. The choice of reinforcement material depends on the pressure rating.
What Makes a Spiral Hose an Industrial Hose
For a hose to qualify as an industrial hose and withstand the various stresses—which often act simultaneously—such as temperature, overpressure or underpressure, flow velocity, and permeation of the conveyed medium, etc., over as long a period as possible, the optimal combination of material and hose construction must be identified for the specific application.
Here are the various hose types from our product range:
Clip-on hoses with a spiral clamping profile
Construction
A tensile-resistant connection between the hose material and the outer spiral (clip) is achieved through a special clamping process.
Advantages
Versatile processing and combination options for a wide variety of hose materials.
- External abrasion protection provided by the external clamping profile (clip)
- Enhanced abrasion protection possible through an additional plastic profile over the clamping profile (clip)
- Excellent flexibility
- Minimal bend radii
- In some cases, extremely compressible
- Easy to install using the Clip-Grip hose clamp
- Virtually continuous range of manufacturing diameters from standard to DN 1000
- Larger DN sizes available upon request
Extruded spiral hoses
Construction
Extruded plastic profile with spring steel wire cast into it to prevent twisting and shifting.
Advantages
- Capability to manufacture tubing ranging from lightweight and highly flexible to heavy-duty and highly vacuum-resistant grades.
- Helical, with overlapping welds
- Uniform, symmetrical folding behavior due to the secure bond between the plastic and the spring steel wire
- Flow-optimized due to smooth inner wall
- Capability to process thermoplastics
- Manufacturing diameters ranging from DN 13 to DN 500, depending on the hose type
Film and fabric tubes with an embedded support coil
Construction
Films or fabric strips—arranged in a helical pattern, welded with overlapping seams, with an embedded support helix made of spring steel wire.
Advantages
- Variable manufacturing options for spiral hoses made from a wide variety of materials
- Highly flexible
- Minimal bend radii
- Cost-effective warehousing and low transportation costs for compressed, net-wrapped packaging units
- Manufacturing diameters ranging from DN 32 to DN 400, depending on the hose type
- Other nominal diameters available upon request
Film and fabric tubes with an attached support spiral
Construction
Strips of film and fabric—arranged in a helical pattern, welded together with overlapping seams, with an attached support helix made of plastic or sheathed spring steel wire.
Advantages
- Flexible manufacturing options for spiral hoses made from various materials, including film and fabric strips.
- Highly flexible
- Minimal bend radii
- Manufacturing diameters ranging from DN 32 to DN 450, depending on the hose type
Spiral hoses with a seamless outer plastic wall
Single- and multi-layer spiral hoses made of vulcanized fabric strips
Construction
Overlapping, vulcanized fabric strips with an exposed or embedded spring steel support coil on the inside and additional outer glass fiber cord reinforcement, for hose types NEO 1/2 and SIL 1/2.
Advantages
- Flexible manufacturing options for spiral hoses made from various materials, including film and fabric strips.
- Smooth inner wall
- Flexible
- Small bend radii
- Good pressure resistance
- Manufacturing diameters from DN 13 to DN 305
Inline and Performance Hoses
The manufacturing process for an inline or performance hose is identical to that of a standard profiled hose, except for the lining. First, plastic granules are melted and extruded into a plastic profile. During this process, a spring steel wire is embedded in the plastic profile so that it cannot twist or shift. The hose is then welded in a helical, overlapping pattern to give it its final shape. Shortly after welding, the hose is filled from the inside with a cold-cast elastomer. The rotation of the hose creates the smooth inner layer of the hose. Our Master-PUR Performance has a wall thickness of 2.5 mm, whereas the Master-PUR Inline has a wall thickness of 5.5 mm.
Miniflex
Unlike our other hoses, our Miniflex hoses do not have a molded-in spiral. The spiral is exposed on the inside of the hose. During manufacturing, a spring steel spiral is seamlessly coated on the outside with a thin layer of TPU. Depending on the wall thickness, the layer thickness ranges from 0.3 to 1.2 mm.
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