MacRoy D Series

Precise fertilizer application
through irrigation systems of all types

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.

Key Features

Easily accessible filter assembly

protects pump, plumbing and
connections from foreign objects.

Large, easy-to-ready dial

lets you adjust flow, quickly and simply, while the 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.

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.


Elimination of run-off
while precisely providing what your crop needs


Utilized globally in 44 countries representing the world's primary growing regions

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.

What our clients say...

"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... 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, Tennesee

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 (.18 kW)

12-volt DC

1/4 hp (.18 kW)

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 (.18 kW)

12-volt DC

1/4 hp (.18 kW)

Locate a Dealer!

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.

Comparison Sheets Coming Soon