Selection of transfer pumps for R141B at room temperature
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Which pumps can meet the requirements of R141B? Using shielded pumps isn’t suitable for this purpose, and with centrifugal pumps, the mechanical seals often leak.
What are the relevant parameters? Be more specific!
Head pressure is around 25 m, with a minimum of 15 m; flow rate is 10–20 m3. The density is approximately 1.2. There are slight amounts of fine impurities; it is a liquid phase, and there is a small amount of hydrogen fluoride present
The last edit to this post was made by svenzheng on 2016-8-19 at 09:24. Media containing impurities are not suitable for use with shielded pumps or magnetic pumps; therefore, a centrifugal pump will suffice. For the flushing plan, PLAN11+PLAN31 – the face seals use double-face mechanical seals, and it is required that these seals be corrosion-resistant； Or simply use UHB series corrosion-resistant centrifugal pumps.
Diaphragm pumps work as well, as do power-sealed vertical pumps
A sliding vane pump can be used. Is R141B a type of refrigerant? If so, we have specialized pumps for transporting refrigerant.
The pressure in the receiving tank at the pump outlet is around 0.2~0.3 MPa; the head is given as 15~20 M, with resistance taken into account.
Yes, I’m not sure if these types of pumps are good
The material contains hydrogen fluoride; if it leaks during rinsing, it will turn into acid, and water must not enter the material system； I’m not sure if your rinsing method will have an impact
R141B has a boiling point of 32°C. It vaporizes easily during transportation. Our pumps can transport both gas and liquid.