The application of hydraulic hose in brake system and power steering system
Metal hose needs heat trace and insulation. Heat trace uses to smaller size metal hose. But with the same length. Then set one on the left and another right behind. After that, pack them to a unit with glass fibre. In order to avoid the moisture, you can coat a water proof layer. While you can also make a special water proof shell. But it can’t affect the normal work.
During the work, you have to follow the strict regulation. The metal hose broken by didn’t open the valve often happens. Thus you should focus on this.
Check it regularlly
You should also check the metal hose annually. Remove it from the system, then clean it. After that, make a water pressure test at 1.5 times the work pressure for 10 min. After dry, make an air pressure test at 1 times the work pressure for 15 min. While there should not be leakage. Besides,the metal net should not crack and the nut should not fall.
When the metal hose works to the lower limit position, it means that its compensation capacity has been exhausted. So you have to change a larger one. Although metal hose has not worked to the lower limit position, but they works for long time. Thus you should also change a new one.
In general, metal hose for heavy oil tank can work 8-10 years in inland areas. While it’s 5-8 years in coastal areas. But the metal hose for light oil can work 5-8 years in inland areas. While it’s 3-5 years in coastal areas. For strong corrosive and erosive, in addition to special demands on material, there should also be some changes on structure. While the service life is depend on the work condition.
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