Pressure:
Back pressure occurs when a pump pushes fluid through a filter, or pushes fluid through a flowmeter or valve, or pumps fluid into a pressurized reaction vessel. The application of peristaltic pump is limited by the pressure bearing performance of hose.
If the system pressure exceeds the hose limit, the hose can expand, resulting in excessive hose wear or hose rupture. Factors affecting the pressure of the hose include: material, diameter and wall thickness ratio, etc.
Size:
The size of the hose directly affects the flow rate, and the inner diameter of the hose determines the flow rate, which is proportional to the flow rate.
Wall thickness affects the ability of the hose to bounce back under compression and also has a great impact on the hose life. Please refer to “Hose specifications” table.
Transparency:
Whether a transparent pipe should be used depends first on whether the operator needs to observe the condition of the fluid in the pipe at all times and whether the fluid is sensitive to light.
If the operator needs to observe the fluid, bubbles, particles, pollution and other situations in the tube at any time, it should choose polyethylene or silicone rubber and other transparent pipes; If the solution is not suitable for exposure, opaque pipe should be used.
Porosity:
For some gas-sensitive fluids, such as oxidized fluids, or anaerobic cell culture fluids, the user should consider the ventilation factor of the pipe. In general, silicone tubes are the most breathable. To the fluid that should not contact gas so, should choose the pipe with lower permeability.
Hose life:
Different hoses have different ability to withstand repeated extrusion and friction of rollers. Different pipe types, pipes, pump heads and running speeds have different life spans.
Choose long life, thick wall pipe, choose large flow pump, running at lower speed can obtain longer hose service life. See “Various Hoses Service Life Table” for specific data.
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