The flexible metal hose assembly is a subdivision definition relative to the metal hose.
It is usually equipped with various functional parts and connection fittings to meet market needs.
Flexible metal hose assembly is our most common form of metal hose.
The flexible metal hose assembly can compensate for the displacement between pipelines or machinery and absorb vibrations and is an essential flexible connection accessory in modern industrial pipelines.
corrugated hose
The flexible metal hose assembly comprises five parts: corrugated hose, braid, reinforcing ring, connecting pipe, and connecting fittings.
The corrugated hose is the core component of a flexible metal hose assembly, which can be divided into spiral and annular types.
Spiral corrugated hoses generally have a relatively small diameter and produce flexible metal hose assemblies that require general flexibility and high strength.
braid
The braid mesh is made of several metal wires or metal strips cross-woven with each other.
The braid is assembled on the outside of the corrugated hose, strengthening the pressure and shielding the external damage.
The braided material is generally the same as the corrugated hose and can use different materials according to the surrounding circumstances.
Commonly used flexible metal hose assemblies have only a single braid, sometimes a double or triple braid for some high-pressure applications.
reinforcing ring
A reinforcing ring holds the corrugated hose with the braid and forms the main body of the flexible metal hose assembly.
There are two ways to fix the reinforcing ring, one is crimping, and the other is welding after crimping.
The former we call a crimped hose, which is only suitable for use in low-pressure circumstances.
The latter is called a welded hose, which has a broader range of applications and can be used in different cases, such as low, medium, and high pressure.
connecting pipe
Connecting pipes are used to attach metal hoses and fittings.
The material of the connecting pipe is usually consistent with the corrugated hose.
Considering cost reduction, some large-diameter flexible metal hose assemblies use carbon steel pipes.
When transporting corrosive media, avoiding contact between the medium and the carbon steel pipe is necessary.
Depending on the field of application or the connection fittings, there are designs without nipples.
connection fittings
The connection fittings of the flexible metal hose assembly can be roughly divided into three categories: threaded type, quick connector type, and flange type.
The threaded metal hose has good sealing performance and is suitable for higher working pressure.
Threaded metal hoses are commonly used below DN50. The quick connector metal hose is very convenient to install and disassemble and can be done by hand without other tools.
Quick connector metal hoses are often used below DN100. The flanged metal hose can withstand general working pressure, and the installation is relatively troublesome.
Flanged metal hoses are mostly used in larger sizes, usually above DN25.
product features
- Reduces installation stress on piping systems
- Compensate for displacement between pipes or machinery
- Absorbs vibrations from piping or machinery
