常见问题解答

How do I measure the length of an elbow?

The length of an elbow is measured from one end of the elbow to the center of the circumference of the other end. View example.

How do I choose the most suitable hose?

 

When choosing a flexible hose for a certain application the following points must be considered:

Pressure – Vacuum
Operational pressure and vacuum values. Water hammer.

Conveyed products
Nature, designation, concentration, working temperature. Form: liquid, gas, or solid. In the case of the latter: granulated, density, behavior of transported solid product, nature, speed of travel and flow of transported fluid. Frequency of use.

Environment
Place of use, ambient temperature, hygrometric grade, exposure or lack of exposure to atmospheric agents and ozone. Products that may be in contact with the end of the flexible hose.

Mechanical limitations
Minimum bending radius in service. Limitations in terms of traction, torsion, flexion, vibration or compression. Risk of impact, abrasion, corrosion. Work position: on the floor, suspended or submerged.

Connection used or expected to be used
Connection: type, dimension and class of thread. Hose: Outer and inner diameter. Adjustment length.

Particular conditions
With relation to this matter, it is in the user’s interest to choose flexible hoses that conform to the standards in force in the country of use, provided that these exist within the field of application in question.

In cases of difficulties regarding interpretation or where the necessary information does not appear in the available documentation, the user of the flexible hose is advised to consult the manufacturer.
How long can I storage the hoses?

Storage life should be reduced as much as possible. Therefore stock rotation should be ensured, applying the rule “first in, first out”. When long term storage cannot be avoided, e.g. for one year, the item should be thoroughly checked before it is put into operation.

What is the optimal temperature during storage?

Storage temperature should be kept at between 0°C (32ºF) and 35°C (95ºF) wherever possible (optimum temperature 15°C/59ºF). Relative humidity should preferably not exceed 65%.

Which are the optimal storage conditions?

Flexible hoses should be stored without excessive restriction, lengthening or deformation. All contact with sharp or angular objects or material must be avoided. Hoses must be stored in a dry place in storage boxes wherever possible. Flexible hoses that are coiled up should be stored flat and preferably not stacked. In cases where this is impossible, the height of stacks should be limited so that the items at the bottom of the stack are not deformed. Heavier items should be placed at the bottom and lighter items should be placed at the top. The coil must be at least equal to the minimum curvature radius specified by the product manufacturer or standards. Hanging coiled hoses from spikes or hooks is not recommended. Flexible hoses that are supplied in lengths should be stored flat without folds.