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Hose maintenance and maintenance
Jul 28, 2017

The hoses are moved or pulled at the joints. Excessive displacement can cause pressure to fluctuate. The hose assembly is too short. The hose starts to bend too close to the hose connector. Or because of improper buckle size.


 First, the hose is cracked at the joint

Symptom: The hose blasts at the joint, and the broken wire is at the end of the buckle or at the end of the connector core.

Cause: The hose moves or pulls at the joint. Excessive displacement can cause pressure to fluctuate. The hose assembly is too short. The hose starts to bend too close to the hose connector. Or because of improper buckle size.

Solution: lengthened or re-arranged so that the hose can be a little relaxation. Do not straighten the hose to fit the assembly, because there will be a maximum of 4% of the amount of compression. Hose bending start front should be 2 times the diameter of the straight pipe distance. Appropriate use of pipe clamp to fix the hose. Withholding To select the appropriate tool, follow the procedure.


Second, the hose blasting, the pressure is too large

Symptoms: Hose blasting, the use of time is very short, blasting occurred in many places. Blasting is very clean, there is no clutter of the broken wire, did not find a wire wear or external layer of grinding traces.

Reason: Excessive working pressure, or more than the minimum burst pressure.

Solution: Adjust the system pressure or replace the hose with a higher pressure.


Third, the hose aging

Symptoms: There are many fine cracks in the inner layer of the hose, but still flexible. But there was no cracking in the inner layer of the hose at the buckle of the hose joint.

Reason: The internal air is dry. It may be due to the use of a non-lubricated air compressor or a cooling air drying system.

Solution: Replace, use a hose dedicated to extremely dry air.