Dultmeier Sales will be closed Thursday, November 26th and Friday, November 27th in observance of Thanksgiving

Dultmeier Sales will be closed Thursday, December 24th at 12pm and all day Friday, December 25th.
Normal operations will resume Monday, December 28th. We wish you and your family a very Merry Christmas!

Dultmeier Sales will be closed Friday, January 1st in observance of
New Year's Day

Dultmeier Sales will be closed Thursday, July 4th and Friday, July 5th in observance of Independence Day.
Normal operations will resume Monday, July 8th. We wish you a happy 4th of July!!

We are experiencing some technical difficulties on dultmeier.com and apologize for any inconvenience.
If you are running into issues, please phone your order in to 1-888-677-5054

Customer Pickup Orders: to help reduce exposure for our customers and our employees, if you are placing an order for in-store pickup please call in your order ahead of time or place your order online and pre-pay with a credit card. Be sure to let us know when you plan to arrive. We will have your merchandise ready for you and will greet you outside our facility. Thank you for your help!

Self-Priming Centrifugal Pump Priming Failures | Video

Gorman-Rupp Pumps briefly demonstrates the causes and effects of priming failures in a self-priming centrifugal pump. This includes air leaks, air binding, face clearance, plugged impeller eye and plugged recirculation port.


Centrifugal pumps operate by rotating a shaft-driven impeller inside a casing. When fluid is introduced to the impeller, the force of the rotation expels the fluid through a suction port. This port expels the fluid outside the casing, where it then exits a discharge port. The velocity received by the impeller is changed into pressure.

How does a Centrifugal Pump work? What makes a Self-Priming Centrifugal Pump different?

Self-priming centrifugal pumps differ from non-self-priming centrifugal pumps in that self-priming pumps will not suffer from air binding. Self-priming pumps do this by mixing air and water together and then removing excess air. This process stops during pumping, and resumes after pumping is finished.