Dultmeier Sales will be closed Thursday, November 25th and Friday, November 26th in observance of Thanksgiving

Dultmeier Sales will be closed Friday, December 24th.
Normal operations will resume Monday, December 27th. We wish you and your family a very Merry Christmas!

Dultmeier Sales will be closed Friday, December 31st in observance of
New Year's Day

Dultmeier Sales will be closed Monday, July 5th in observance of Independence Day.
Normal operations will resume Tuesday, July 6th. 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!

Diagnosing Defective Pump on Pressure Washer | Video

Examining and dismantling a defective Comet Pump driven pressure washer. Disassembly and inspection of the plunger pump onboard.


Plunger pumps are a type of positive displacement pump that work by expanding and contracting a cavity using a plunger rod. First, the cavity expands as the plunger rod moves away, which draws in fluid from an inlet valve. Then, the rod moves back towards the cavity, contracting the cavity and expelling fluid.