What kind of pump should be used to transport easily vaporizable media?
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What kind of pump should be used to transport easily vaporizable media?
One should pay attention to the net positive suction head when selecting a pump in order to avoid this issue.
1. It is still necessary to consider the cavitation head of the device, and select a pump with an appropriate cavitation head to avoid cavitation； 2. The pump itself should not have any structures that cause stirring or shock. 3. The pump itself should not generate additional heat. 4. Short-term cavitation and vacuum conditions will not cause damage to the pump; a regular centrifugal pump will suffice, depending on the pump’s performance parameters
NPSH is nothing but empty talk; how can manufacturers ensure an appropriate NPSH value? It’s likely that pump manufacturers don’t pay much attention to this aspect nor do they carry out any work in this regard. Even if they do do something, once the pump reaches the end user, how can that user verify the pump’s NPSH value? I doubt there’s any user who has actually checked a pump’s NPSH value
If the pump suffers from cavitation issues, it won’t be usable when it arrives at the site. Don’t doubt whether the manufacturer is good or not. Are the payment amounts owed by the customers made on time?
If you are not sure about the pump model, you can issue a tender or specify certain requirements in the technical specifications when making the purchase, such as； The medium pumped by the pump, the physical properties of the medium, the inlet pressure and outlet pressure of the pump, the material of the pump, etc
:) Taking the pump’s performance parameters into account (especially the net positive suction head), a jacket can be installed outside the pump, and a fluid can be passed through this jacket to reduce cavitation of the fluid.
The physical properties of the medium sent to the manufacturer, as well as the operating conditions, must be accurate
The shielded pumps are used by our company to handle ethylene oxide, while the magnetic pumps are used for handling acetaldehyde, and both work without any problems
The vertical reverse circulation shielded pump is something you really deserve to have; the circulation line at the top of the pump allows gases inside the pump to be effectively expelled outside the pump and returned to the low-pressure area at the top of the pump’s inlet tank