Selection of shielded pumps
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I would like to ask everyone: what is the minimum flow rate that can be achieved with shielded pumps these days? We are installing a new system for transporting ethylene oxide, and the flow rate required is relatively low, ranging from 1000 to 3000 L/H. What type of pump would be suitable for this application, given that the head requirement is not high and the pressure requirements are also low?
For this specification, a magnetic pump can also be considered
Provide Q, H, NPSHa; this should allow for selection. A return line may need to be installed at low flow rates
Please provide the specific name of the medium, as well as requirements regarding temperature, flow rate, head, net positive suction head, power, etc., so that a suitable model can be selected; it is impossible to make a choice without these details
Either is fine; currently, the flow rate is low and the medium tends to vaporize easily
The flow rate of the shielded pump is fine. Other important parameters are also mainly required
The old unit used a metering pump, which was very unstable; for the new unit, we want to use one that is more reliable, but the design team has not yet finalized the specific parameters. I checked some information and found that the minimum flow rate for a shielded pump is 2.5 cubic meters per hour; it’s a bit difficult to achieve backflow, and I’m worried about potential problems
Return to the inlet container, do not return to the inlet pipeline
Magnetic pump, right? The shielding is expensive and maintenance is troublesome