Dultmeier Sales will be closed Thursday, November 22nd and Friday, November 23rd in observance of Thanksgiving

Dultmeier Sales will be closed Tuesday, December 24th at 12pm and all day Wednesday, December 25th.
Normal operations will resume Thursday, December 26th. We wish you and your family a very Merry Christmas!

Dultmeier Sales will be closed Wednesday, 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!

ARO Diaphragm Pump Maintenance & Repair | Video

This video demonstrates how to perform maintenance on an ARO PD05P-X-X-B Diaphragm Pump. This includes disassembly of the diaphragm pump, inspection of important parts, replacement of those parts, and reassembly of the diaphragm pump.


Diaphragm pumps are a type of positive displacement pumps that operate by two large diaphragms that move away and back towards the central chamber, drawing in and expelling fluid alternately. A one-way check valve ensures that fluid flows in only one direction at a time. This generates a enough pressure to be used reliably for cleaning or spraying.

ARO pumps are ideal for general industrial and OEM installation applications. Pumping fluids include clean, low viscosity fluids to abrasive and corrosive medium viscosity fluids.