Facts about the LPA® Pump

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The LPA® pump is an open-drive sealed unit with important design features:

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Facts about the LPA® Pump

LPA® (Liquid Pressure Amplification) | Co2 | R290 | NH3 |HFO | HFC |

The LPA pump is a semi-hermetically sealed unit with important design features: The impeller floats in a revolving magnetic field and is the only moving part.The magnetic flux is supplied by an external motor with a magnetic coupling device. Because the motor is external to the system, a burnout cannot contaminate the system. The external placement of the motor eliminates any additional heat back into the system. In the unlikely event of motor failure, the motor can be replaced without the need to shut the system off or remove the refrigerant.

All LPA pump ‘s are self unloading which means inverter speed control in not necessary. Mechanical life exceeds 30 years of reliable and stable operation.

19 Responses to “ Facts about the LPA® Pump ”

  1. Frank says:

    Can the motor be removed without decanting the refrigerant charge?

  2. Engineering says:

    Yes, the motor is entirely separate from the pump housing. No shafts. Magnetically driven. No leaks.

  3. Wim Schmitz says:

    How does the pump adjust to a system with a wide range of capacity regulation, so there is a very wide range of flow needed.

  4. HY-SAVE Engineering says:

    Good day,

    All of our pumps are self unloading; if simulating the effects of closing the expansion valve; pumping head will increase and flow rate would reduce as with the motor power consumption.

    HY-SAVE Engineering

  5. Engineering says:

    Good day,

    Our range of LPA pumps are self unloading. Please contact us for specifics.

    HY-SAVE Engineering

  6. Stefan says:

    How much pressure can this boost if using for an organic rankine cycle with R134a? We are looking for 1:3 ratio boosting pressure up to about 150 psi. thanks!

  7. Engineering says:

    Stefan thanks for your mail.

    We do have a new mode LPA pump that can reach these pressures but not available until August this year.
    Other that that we would be of little use.


  8. Benoit says:

    Do you have single phase 115 volts motor ?

  9. Engineering says:

    Single phase motors can be provided but are not carried in stock.
    Lead times are generally 5 to 7 weeks for out of stock items.

  10. Engineering says:

    Yes but expect a 5 to 7 week production lead time for single phase motors.

  11. Tech. gegevens van kleinste pomp en 220V or 380
    max feet
    max temp in pomphuis
    Oil kan 70 gr zijn

  12. Alguien sabe a que mail me puedo comunicar a Hy Save porque no me responden donde mando los mails


  13. admin says:


    Please can you contact us using the contact link above.


  14. Dear Sir,
    We are interested in 60 bar co2 liquid line pumps?

    Please give email which I could contact?


  15. admin says:

    Good day,

    We have 60 bar and 125 bar Co2 pumps for applications ready to go.
    Please can you contact us via our contract link above.

    Thank you.

  16. Marcelo says:

    What kind of maintenance the pump needs? Shold I install a by-pass if pump fails or is in maintanance? Is there any “typical installation” diagram? Thank you!

  17. admin says:

    Hello Marcelo,

    All LPA pumps are maintenance free. When the pump is off, the refrigerant will continue to flow through the pump and would not affect system performance. Regarding the installation diagram this will be sent to you separately.
    Have a good day,


  18. admin says:

    Good day Marcelo,

    Please contact us via our Contact link at the top right hand side of our site for further information,

    Thank you,

  19. admin says:

    Good day Vincenzo,

    Please could you contact us via our site’s contact page for specifics.

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