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!

Air Operated Diaphragm Pumps

The most popular type of diaphragm pump is the Air-Operated Diaphragm Pump. These pumps use compressed air as their power supply. They also include two chambers with a diaphragm, inlet check valve and outlet check valve in each chamber. The air supply is shifted from one chamber to another with an air spool valve that is built into the pump. This continual shifting of air from one chamber to another (to the backside of the diaphragm) forces liquid out of one chamber and into the discharge piping while the other chamber is being filled with liquid. There is some pulsation of discharge flow in Air-Operated Diaphragm Pumps. This pulsating flow can be reduced somewhat by using pulsation dampeners in the discharge piping.

Small Air Operated Diaphragm Pumps from Flojet & Shurflo

Small Air-Operated Diaphragm Pumps

These pumps typically have 3/8", 1/2" or 3/4" inlet and outlet ports and flowrates of 2 to 10 GPM.

Tom Hansen, P.E.  |  Dultmeier Sales
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