$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.

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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.

Diaphragm Pumps for Direct Drive (Engine or Motor)

Large Shaft-Driven Diaphragm Pumps

Larger shaft-driven diaphragm pumps that can be driven from engines or motors are very popular for high pressure tree spraying and lawn spraying (up to 725 PSI). Some models of these diaphragm pumps for direct drive can also provide higher flowrates up to 30, 40 or even 60 GPM. Models are available to run at 550 RPM with 6:1 Gear-Reduction Engines and other models include built-in gear reduction units in order to run with standard 3600 RPM engines. Pressure control units are also available for all models.

Diaphragm Pumps for Direct Motor or Engine Drive.
Large Shaft Driven Diaphragm Pumps.

Yet another type of larger shaft-driven diaphragm pump is the Wanner Hydra-Cell Pump. These pumps will provide pressures to 1500 or even 2500 PSI and flowrates to 36 GPM. They can also be manufactured with a variety of metals and elastomers for aggressive chemicals, acidic solutions, wettable powders, slurries, abrasives and hot liquids.

Small Motor Driven Diaphragm Pumps (12, 24 or 115 Volt)

These small diaphragm pumps usually have 3/8", 1/2" or 3/4" inlet and outlet ports and flowrates from 1 to 7 GPM. They typically develop pressures to 60 PSI and even 100 PSI in some cases. These small, motor-driven diaphragm pumps are made in two distinct styles. The first is the "Demand" Style which includes a built-in pressure switch to automatically stop and start the pump at specific pressure settings; this style is the most popular. The other one is the "By-Pass" Style where the pump continues to run regardless of pressure in the system but internally bypasses flow if the discharge valve is closed. However, if the discharge valve is closed for more than a minute or two, overheating of the liquid can occur and damage the pump internals.

Small Motor Driven Diaphragm Pumps (12, 24 or 115 Volt)
Tom Hansen, P.E.  |  Dultmeier Sales
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