Joanne Tarr, BMG’s national product manager – hose and fittings, has some advice to offer on hydraulic hose and fittings. She says that extreme care must be taken in the correct selection, installation and maintenance of matched, quality components in any hydraulic system because hose assemblies can be highly dangerous if misapplied and if inadequate attention is given to maintenance of the hose and related equipment.
When selecting a hose, it is important that the working pressure of the hose is higher than the maximum operating pressure of the system. Fluid temperature, either in motion or with the equipment at a halt, should never exceed the maximum working temperature recommended for each hose. It is also critical to consider the surrounding temperature, especially from resulting heat sources in the proximity of the hose assembly.
BMG recommends that hydraulic hose assemblies are always inspected and pressure-tested against leakage and malfunction before installation. Installations that do not comply with the adequate geometry of the hose assembly, or where the application of the system exceeds hose specifications, can lead to premature failure of the hose assembly. High velocity and high temperature projections of hydraulic fluid must be prevented. Fluid compatibility with the hose and coupling should also be verified. Fluids can chemically attack the hose, which results in contamination and the obstruction of the hydraulic system. This leads to premature failure of the hose and the system.
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