What flow rates can the G series handle, and how precise is the adjustment?
The G series operates across a flow range of up to 150 gallons per hour, providing a true 10:1 turndown ratio. Flow is adjusted using a micrometer-style percent knob with easy-to-read markings in ½% increments, allowing precise, repeatable rate settings. The knob adjusts pump stroke length and provides a predictable relationship between percent setting and output under normal operating conditions. Regarding accuracy of the pump itself, the G110 has a steady state accuracy of ± 2% of full capacity over the 10:1 turndown ratio.
What products can I inject with the G Series, and can it handle slurries or non-soluble products?
In its standard configuration, the G Series is designed for liquid fertilizers, many crop protection products, wetting agents, and compatible liquid soil amendments. Slurries, non-soluble products, and abrasive materials require a slurry-ready configuration, which includes stainless steel check balls and seats to protect internal components and ensure reliable operation.
How does the G Series ensure even and consistent distribution across the irrigation system?
The G Series is a pulsating, positive-displacement diaphragm pump operating at 173 strokes per minute, producing frequent, evenly spaced injection pulses. These pulses are introduced through Agri-Inject’s Mister Mist’r® injection quill, which promotes immediate dispersion into the irrigation stream. Additional mixing naturally occurs as the solution travels through downstream piping, elbows, and sprinkler drops before reaching the outlets. In more than 43 years of field use, Agri-Inject has never documented a distribution issue attributable to the G-Series injection method when systems are installed and operated according to guidelines. Between the high pulse rate, controlled injection point, and inherent hydraulic mixing in pressurized irrigation systems, uneven distribution is not a practical concern in real-world applications.
Can I adjust the injection rate without stopping the pump?
Yes. The G Series is designed for on-the-go adjustment while the pump is running. The micrometer-style knob allows smooth, controlled changes without shutting the pump o_. Many competitive pumps require stopping the pump, using tools to make adjustments, and restarting — often with very coarse or low-resolution markings. The G Series allows accurate adjustments without interrupting irrigation.
What suction hose size should I use, and why does it matter?
Suction plumbing is critical. All positive-displacement injection pumps are sensitive to Net Positive Suction Head (NPSH). Undersized suction hoses can cause under-performance, di_cult priming, cavitation, or internal damage. Always use the recommended suction hose size or larger—never smaller. Proper suction sizing ensures consistent flow, accurate injection rates, and long pump life.
Is the G Series available in a 12 VDC configuration?
Yes. The G Series is available in 12 VDC, as well as multiple AC voltage options. In 12 VDC applications, power is typically supplied by an engine-driven alternator. Because alternator voltage can vary, pump output may vary slightly compared to AC-powered systems. All electrical installation and interlocking should follow the operating manual and applicable codes.
Why doesn’t the G Series include a plug (cord end) or suction hose?
Electrical cord ends and suction hoses vary widely by region, voltage, irrigation control panels, tank location, hose length, elevation, and preferred connection styles (hose barbs, cam-lock fittings, or hard plumbing). Excluding these items allows installers to select components that are correct for their specific installation rather than forcing a one-size-fits-all solution.
What maintenance is required, and how important is winterization?
Annual maintenance and proper winterization are strongly recommended and outlined in the operating manual. When these procedures are followed consistently, freezing damage, corrosion, and premature wear are often avoided, and major repairs are frequently mitigated or eliminated.
Can I order an acid-ready or slurry-ready G Series through the online store?
No. Special configurations such as acid-ready or slurry-ready systems are not available through the online store. These applications require specific materials, plumbing, and internal components. Customers must contact Agri-Inject directly to ensure the system is configured correctly and safely.
Is the G Series limited to center-pivot irrigation systems?
No. While commonly used on center pivots, the G Series is also suitable for linear move systems, drip irrigation, solid-set systems, greenhouses, and other pressurized irrigation applications, when installed and operated within system limits.
Where can I find detailed installation, safety, and operating requirements?
All installation, operation, calibration, maintenance, and safety requirements are detailed in the MacRoy G Fertigation System Operating Manual. This manual should be reviewed completely before installation or operation, as improper use can result in equipment damage, safety hazards, or regulatory non-compliance.
What warranty comes with the G110?
Warranty coverage varies by component and is defined in the operating manual. Pump drive components are covered for multiple years under normal use, while electric motors are covered only for the period provided by the motor manufacturer (typically one year). Improper installation, incorrect rotation, chemical incompatibility, or failure to follow operating instructions may void warranty coverage.
Do I really need to read the operating manual?
Yes. The manual contains critical information on pressure limits, suction requirements, electrical phasing, safety interlocks, calibration, chemical compatibility, and regulatory compliance. Many performance issues and warranty claims trace back to steps clearly addressed in the manual being skipped.
What is included in the Agri-Inject startup kit?
Every Agri-Inject fertigation system ships with a custom startup kit packaged in a branded drawstring bag. The kit is designed to support safe installation, accurate setup, and early operation, and may include items such as safety glasses, gloves, reference materials, basic tools and supplies, a custom oil funnel, and information for downloading the ApplyYourself® app. The contents are intended to help operators get started correctly and support proper long-term operation.
