Dosatron® D128R Wishbone Spring

Product Overview

A damaged or fatigued wishbone spring can bring your entire fertigation setup to a grinding halt during the most critical windows of the growing season. When the spring loses its tension or snaps, the chemical injector fails to cycle, leading to uneven nutrient delivery, stunted crop growth, or total system shutdown. With peak summer demand nearing and global supply chains remaining unpredictable, waiting for a failure to happen is a risk to your project deadlines. Maintaining a backup stock of these essential components ensures you can perform immediate roadside or field repairs, keeping your clients satisfied and your systems running without the frustration of long lead times or back-ordered shipments.

The Dosatron D128R Wishbone Spring is engineered with higher fatigue resistance than generic aftermarket alternatives, ensuring a more reliable snap-action movement within the motor assembly. By using genuine OEM parts, you reduce the frequency of maintenance intervals and prevent the premature wear of connected internal components. This precision-calibrated spring allows your crews to restore factory-spec dosing accuracy in minutes, saving billable labor hours and avoiding the high cost of total unit replacement. Staying well-stocked with these high-wear items provides you a competitive edge by minimizing downtime and proving your reliability to commercial and agricultural clients alike.

Product Specifications

Available Models & Sizes

The D128R Wishbone Spring is specifically sized for the D14MZ series and related 14 GPM models; however, we carry a full inventory of Dosatron seal kits, check valves, and piston assemblies. Please contact our technical sales team for full configurations or bulk pricing on seasonal maintenance kits tailored to your specific injector fleet.

Key Features

• Genuine OEM construction ensures perfect fitment and tension within the motor body.
• Manufactured from corrosion-resistant materials for long-term exposure to harsh fertilizers.
• Calibrated spring rate provides consistent cycling even under fluctuating pressure conditions.
• Simple drop-in design allows for rapid field replacement without specialized diagnostic tools.
• Extends the service life of the injector by maintaining proper mechanical timing.
• Resilient design withstands high-cycle applications in high-volume commercial environments.

Common Applications

• Agricultural and crop irrigation
• Greenhouse and nursery operations
• Chemical and fertigation delivery
• Municipal parks and public spaces
• Sports turf and golf course maintenance
• Commercial landscape irrigation

Installation Notes

Before installing the new D128R wishbone spring, ensure the injector is disconnected from the water source and pressure is fully bled from the lines. Use a standard non-marring tool to access the motor assembly and inspect the surrounding plastic housing for debris or wear that could interfere with the spring movement. Always refer to the manufacturer schematic to ensure the spring is seated properly in the actuator grooves, as incorrect positioning can lead to cycling failures or decreased dosing accuracy.