6 Recommended operating procedures
DO
keep delivery and suction lines as short as possible using a minimum number of swept bends.
DO
use suction and delivery pipelines with a bore equal to or larger than the bore of the tube fitted in
the pumphead.
When pumping viscous fluids, the losses caused by increased friction can be overcome by using pipe
runs with a cross sectional area several times greater than the pumping element.
DO
fit an extra length of pumphead tube in the system to enable tube transfer. This will extend tube life
and minimise the downtime of the pumping circuit.
DO
keep the track and rollers clean.
The self-priming nature of peristaltic pumps means valves are not required. Any valves fitted must
cause no restriction to flow in the pumping circuit.
Tube selection:
The chemical compatibility lists published on the Watson-Marlow website are guides.
If in doubt about the compatibility of a tube material and the duty fluid, request a Watson-Marlow tube
sample card for immersion trials.
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