$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

Close

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 3rd and Tuesday, July 4th in observance of Independence Day.
Normal operations will resume Wednesday, 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.

Hydraulic Pumps

Hydraulic Pumps are commonly used in liquid transfer & spraying operations. These pumps are driven by a hydraulic motor mounted directly to the sprayer or transfer pump. The most common are hydraulic-drive centrifugal sprayer pumps from Ace and Hypro. Another popular version are hydraulic-driven centrifugal transfer pumps from MP Flomax, Hypro, Pacer & Banjo Pumps. There are also hydraulic-drive gear pumps from Hypro.

Advantages of hydraulic-driven pumps include the ability to provide high pressures for spraying (over 100 PSI), the ability to work well in hot or cold temperatures and no need for gas or diesel engines that require repeated fueling & maintenance. Hydraulic-drive centrifugal pumps and gear pumps are also economical relative to engine-drive pumps, especially in the larger sizes.

Hydraulic driven pumps are fed hydraulic oil from a hydraulic pump (usually from the truck or tractor's hydraulic system) through a high pressure supply hose (generally 2,000 to 3,000 PSI) to the hydraulic motor on these pumps. A "return" hose is also run back from the hydraulic motor to the hydraulic reservoir on the truck or tractor. It is important not to over-speed the hydraulic motor on these types of pumps. This is caused by supplying hydraulic oil at too high of flowrate to the hydraulic motor and can damage to the motor and pump bearings & seals. The best approach for preventing overspeeding of a hydraulic-drive pump is to match the flowrate of the motor on the pump to the flowrate of the hydraulic system on the truck or tractor. Many hydraulic-drive pump manufacturer's provide two or three different hydraulic motors for a particular pump for this purpose. A flow limiting valve can help prevent over-speeding of the hydraulic motor by limiting the oil flowrate into the motor.

Tom Hansen, P.E.  |  Dultmeier Sales
© Copyright Dultmeier Sales, LLC this material cannot be utilized in any way including on other websites or publications without the express written permission of Dultmeier Sales.