MacRoy D Series

The MacRoy Series D line of simplex metering pumps from Agri-Inject® allow you to pump precise amounts of fertilizer or other crop inputs from a bulk tank and inject accurately and uniformly into the irrigation stream. The easy-to-operate pump can also handle a wide range of other low to medium viscosity liquids that are compatible with irrigation application – all with unmatched precision control, even at low volumes. 

This affordable pump provides a quick payback on your investment, while delivering a high degree of accuracy, reliability and easy of use. Available in 25 gph and 50 gph models and covered by a three-year warranty, these pumps are manufactured exclusively by Milton Roy for agricultural applications using Agri-Inject fluid injection systems.

D SeriesKey Features

Filter Easily accessible filter assembly protects pump, plumbing and connections from foreign objects.
Dial Large, easy-to-read dial lets you adjust flow, quickly and simply, while pump is running. Can be locked in position to maintain constant flow. Precision stroke adjustment can be operated while in use. Steady State Accuracy ~ + 2% of full capacity over the 10 to 1 turndown ratio.
Control The control switch is sized specifically to each motor and provides overload protection. The switch enclosure is NEMA 4 rated and fully integrated into the Nomad base.
MacRoy D25
Operating Range 2.5 to 25 GPH (9.5 to 94.6 liters)
Maximum Discharge Pressure 100 PSI (6.9 bar)
Three Phase and Single Phase 1/4 hp (.18kW)
12-volt DC 1/4 hp (.18kW)
MacRoy D50
Operating Range 5.0 to 50 GPH (18.9 to 189.3 liters)
Maximum Discharge Pressure 100 PSI (6.9 bar)
Three Phase and Single Phase 1/4 hp (.18kW)
12-volt DC 1/4 hp (.18kW)

What our clients say

“I’ve been using foliar applied nitrogen for three or four years now with very good results. The difference is, up until this last year, we’ve been putting it on with a crop sprayer. Now, with the use of an Agri-Inject pump, we’re able to put 32 percent nitrogen on the crop through our center pivot irrigation. Not only does this save on nitrogen, since we’re not putting it on the corners and only applying it where it can be used, but we save on labor, fuel costs and machine depreciation. It’s worked so well that I’m planning to buy a second Agri-Inject unit for this coming year.”
— Hunter Hooper,
Brownsville, Tennessee

“I have an Agri-Inject G110 that I haven’t actually had a chance to use, due to all the rain we had last year. However, I did use a smaller Agri-Inject unit that the co-op owns to add a mix of micronutrients to one of our fields through the pivot. We took tissue samples and the co-op basically put together a blend of things like zinc, sulfur, boron, etc. based on the need. “I can’t really say how much it helped, because all the corn was good due to the rainfall. But I will say that the field where I injected the micronutrients was the best field of corn I had. Granted, it was also on the best soil I have; but I will certainly be doing it again. Since about 60 percent of our corn is under pivot irrigation, I’m also planning to use the Agri-Inject unit to put on 32 percent nitrogen pre-tassel, assuming it’s not as wet this coming season.”
— Greg Story,
Puryear, Tennessee

Global technology

 Since 1983, we’ve distributed metering pumps to every corner of the globe utilizing irrigation to raise sustainable crops. The engineered reliable design makes it ideally suited for years of service.

Environmentally safe

Utilizing a high quality fluid injection pump enables you to precisely provide what your crop needs while reducing the environmental impact. With Agri-Inject equipment, there are other benefits of reduced drift and reduced labor and energy costs. Agri-Inject also offers containment options to provide even further assurance of environmental safety.

Economical to operate

Lower operating costs at high volumes make the MacRoy Series D especially effective for applying fertilizer, chemicals, and other concentrates through high acreage pivot irrigation systems.

Future of precision agriculture

Today we’re on the doorstep of dynamic growth of precision farming within the global agricultural industry. Agri-Inject products are perfectly in sync with precision agriculture. They are the cost effective way to apply precise amounts of fertilizer and crop protection products at precisely the right times during the growing season. That’s a sound “precision strategy” for improving yields and ensuring crop health for many years to come.

Where to buy

Agri-Inject products are distributed globally through an authorized dealer network. Each dealer has a solid reputation for responsive service and technical support. When you’re irrigating, you can’t afford to wait for answers. You’ll find the support you need from Agri-Inject is just around the corner.