Plainfield, WI 54966 | Beloit, WI 53511
P 715-335-6368 | B 608-362-0706


Nothing creates more return on your irrigation investment, then adding a fertilizer injection pump to your machine.  We carry complete pumps and every replacement part, but the base.  We keep these in stock at all times to insure maximum uptime during the season.  Use the parts list below to identify which part you need.  Pumps motors are available in 3 phase or 1 phase, with 3 phase being the most popular.  The CDS John Blue design is time tested and accurate.

CDS john blue fertilizer pump CDS john blue fertilizer pump

Super reliable and heavily built Neptune Diaphragm Injection pumps will last you a long time.  The Neptune pump uses hydraulic oil to actuate a diaphragm which them moves back and forth to meter the fertilizer.  The distance the diaphragm moves in controlled by a simple tool-free stroke knob, with settings from 10-100 gallons per hour. All moving parts are constantly submerged in oil and enclosed from the environment, meaning long life and reliability.  The most common pump is a the simplex 100 gallon per hour unit (pictured below), but duplex 200 gallon per minute version is also available. We offer these completely set-up with PVC hoses, screen filter, cord, and Banjo Ends or as a bare unit.

neptune fertilizer pump Diaphragm housing and check valves

neptune fertilizer pump Enclosed gear case with oil fill and breather

When it comes to wire, we have you covered with everything from Aluminum Underground, to pump control wire, to Span Cable.  Below is just a small sampling of what we have in stock.  Many rolls are ordered to the exact footage for a specific job, and never stay in inventory or the yard very long.  This minimizes waste, and allows us to have the lowest possible prices on wire for you

irrigation wire Quad #2 and Quad #4 Aluminum Wire

irrigation wire 14/2 and 14/3 UF Pump Wire

irrigation wire Machine Span Cable

American Rotary has been making premium rotary phase converters for more than a decade. For more than 10 years, American Rotary has led the industry in innovation and design. We have introduced, field-tested, and proven several technologically advanced features which have

driven increases in the reliability and precision voltage balancing capabilities of phase conversion unmatched in the industry




As a hydraulically operated sleeve-type valve, the 800 Series Control Valve is designed for versatility. The basic body can be equipped with several different options for controlling pressure and flow in piping systems ranging from drip irrigation to center pivot end guns. It’s also engineered for extremely high efficiency, resulting in low pressure loss and high flow capacity.

irrigation valve Nelson 6″


T6061 Aluminum ANSI flanges, EXTREME DUTY, no chance of breakage like cast aluminum flanges (See right picture).  NCI Exclusive product. US Made, CNC machined for an exact fit.  3/4″ Thick.  Securely holds diaphragm type valves or butterfly valves.

irrigation flange irrigation flange

4 speed VR gearbox

Power take off

Turbine flanged on the gearbox with built-in by-pass

Flexible connection pipe

Galvanized raingun trolley mounted on variable track wheels


Set of nozzles – different diameters

Winding handle

Speed equalizer


For hose diam. 135-140 water inlet Bauer Ø 133

Pressure gauge (glycerine bath)

Mechanical lifting of drawbar

Safety guards

Hot galvanized chassis and turret

Reel coated by epoxy resin and painted with polyurethane paint

Safety guards made of steel, swaged galvanized and painted

Galvanized double water inlet

Hydraulic lifting device of trolley

Telescopic hydraulic feet

For hose diam. 100-110-120-125 water inlet Bauer Ø 108

Polyethylene hose made by unadulterated raw material

North Central carries a variety of sizes of underground PVC pipe to meet your needs. Prices change often due to the market. Call or e-mail for a quote today!

6″ PIP 100#

6″ PIP 125#

6″ IPS 125#

8″ PIP 80#

8″ PIP 100#

8″ PIP 125#

8″ IPS 125#

10″ PIP 100#

What is the difference between PIP and IPS pipe? 

PIP= Stands for “Plastic Irrigation Pipe” size.  This pipe is rated by size by its outside diameter.  For example: 6″ PIP will measure 6″ on the outside of the pipe.

IPS= Stands for “Iron Pipe Size”.  This pipe is rated by the size of its inside diameter.  For example: 6″ IPS will measure 6″ on the inside of the pipe.

irrigation supplies

North Central also carries a full line of custom built underground risers.  These riser are heavy 10 gauge steel (Standard risers are only 12 gauge), thick hot dipped galvanizing, and feature the most robust triple-lip square-back lower gasket in the industry.  No more worries about rolling gaskets or thin pipe.  These risers are built to last for a very long time, and will provide you with the greatest value.  You will also like the prices!

NCI’s Heavy Duty J-Pipes




NCI’s Triple Lip Square Back Gasket



Competition’s Round Back Gasket



 NCI ‘s Square Back Gasket