$2500 FREE FREIGHT PROGRAM is for supplies, repair parts and whole goods. Tanks, pipe, sprayers and other large equipment are not included in this program. Applies to Continental U.S. ground shipments only.

Call for details! 1-888-677-5054

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Dultmeier Sales will be closed Thursday, November 24th and Friday, November 25th in observance of Thanksgiving

Dultmeier Sales will be closed Monday, December 26th.
Normal operations will resume Tuesday, December 27th. We wish you and your family a very Merry Christmas!

Dultmeier Sales will be closed Monday, January 2nd in observance of
New Year's Day

Dultmeier Sales will be closed Monday, July 4th in observance of Independence Day.
Normal operations will resume Tuesday, July 5th. 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!

Due to the impending winter storm Wednesday afternoon and Thursday, ASAP Express is cancelling all operations effective noon Wednesday until midnight Thursday.

How to Install a Wet End Kit on Diaphragm Pumps | Video

Sandpiper Pumps demonstrates how to disassemble an air end kit on a diaphragm pump and install a wet end kit on a diaphragm pump. This how-to video includes the necessary tools for dismantling a diaphragm pump, how to disassemble a diaphragm pump, how to clean and inspect the parts of a diaphragm pump, how to replace the parts on the wet end of a diaphragm pump, and how to reassemble the diaphragm pump.


Air-operated diaphragm pumps work by shifting air from one chamber to another, using two large diaphragms on either end of the machine. When one chamber is void of air, fluid rushes is, and when air rushes back into the diaphragm, the fluid is pressurized and expelled. A one way check valve ensures that fluid flows in the correct direction. This generates enough pressure for the diaphragm pump to be reliably used for cleaning or spraying applications.

The wet end kit includes diaphragms, check balls, and seats. For air end kit replacement, watch this video.

Sandpiper diaphragm pumps are suited for moderately abrasive fluids and suspended solids. Sandpiper diaphragm pumps are availiable with Poly, Kynar, Aluminium, or Stainless Steel bodies and Teflon, Santoprene, or Buna diaphragms.