Although the metal hose can be compressed and stretched, if it is not installed in the right place, it will break quickly and reduce its service life. spherical compensator for thermal expansion

Hose can be installed horizontally, vertically or obliquely. The ideal condition is to install vertically, and avoid installing near the wheel. If necessary, baffle can be installed.

Generally, metal hoses can be divided into three lengths: the first is compression length, that is, the length when the hose is compressed to the limit position; the second is installation length, which is the length when the hose is in the middle position of half the maximum displacement; and the third is stretch length, the length when the hose is stretched to the maximum limit.

When the hose is installed, the hose should be placed in the middle position, that is, the so-called installation length. When installed in this position, the hose can move in two directions when it is subjected to axial load. Otherwise, if it can only move in one direction, it will affect the strength of the metal hose and reduce its service life.

In the actual installation process, considering that measuring the length of hose according to the calculation results may affect the production efficiency, some foreign manufacturers directly mount the ruler on the hose and cut the ruler off after installation.

1. When choosing the metal hose, in order to facilitate installation, please choose the metal hose with loose flange at one end as far as possible.

2. The surface of metal hose should be protected to prevent welding slag and arc ignition burn of metal hose during welding operation at construction site.

3. Strictly prohibit the twisted installation of metal hoses.

4. It should not bend along the root of the metal hose. There should be no dead bend.

5. The medium must not be corrosive to bellows. The chloride ion content in the medium should be less than 25PPM.

6. Strict installation diagram and correct installation method. (See Installation Guide)

7. Mechanical damage to flange sealing surface is strictly prohibited.