Custom Manufactured Pump Models: MPU, PME, etc.

Custom Manufactured (Project) Pumps Maintenance & Repair

example: project pump "MPU..."
example: project pump "PU..."

KNF often partners with equipment manufacturers to produce modified pumps for their instruments or equipment. Because these custom-manufactured pumps have been modified to match specific performance requirements, they are not "standard" KNF products and, therefore, not listed on this website. Examples of custom-manufactured, project pump model numbers include: MPU, PE, PF, PJ, PJM, PL, PM, PME, PMF, PML, PMM, and PU.


To obtain a replacement pump for your instrument:

KNF does not stock modified pumps for OEM instruments. Please contact the instrument manufacturer for complete replacement pumps. Also, please beware of substitute imitations which may damage your instrument, void a warranty, or increase risks to personal safety.

To order spare/replacement parts for your instrument's pump:

Spare/replacement parts may be available for purchase from KNF. To inquire about spare/replacement parts, please submit your request via the appropriate link below, or contact us for more information.
OEM Pumps: Spare/Replacement Parts Question
Process Pumps: Spare/Replacement Parts Question


To request factory repair service for your instrument's pump:

Repair service may be available directly from KNF. To submit a request for pump repair click here, or read the instructions below. If necessary, KNF Customer Service can be reached by email, or phone: (609) 890-8600.

If you reside outside the US, Canada, or Latin America please locate the KNF facility nearest you.

  1. All KNF product returns require a Return Material Authorization (RMA) number. You may request your RMA via our RMA web form.

  2. Alternatively, you may download RMA forms in (.doc or .pdf format). Fax completed form to: (609) 890-8323 or email to rma@knf.com. Be sure to include your phone number.

  3. A KNF Customer Service representative will review your RMA request and, if approved, provide you with Return Material Authorization (RMA) number, and shipping instructions.