When your sprayer pump starts losing prime or you notice chemicals leaking around the pump head, it’s often the diaphragm that’s worn out. This critical part creates the seal that allows your pump to build pressure and move spray materials reliably. A failed diaphragm means your spraying operation comes to a halt right when you need it most—during those narrow application windows when conditions are just right.
What You’re Getting
- High-quality Buna rubber construction that resists chemical breakdown from herbicides, pesticides, and liquid fertilizers
- Precise fit designed to restore your pump’s original pumping capacity and pressure output
- Flexible material that handles the constant flexing cycles of diaphragm pump operation
- Direct replacement part that gets your AR pump back to reliable performance
Built for Real Farm Work
This diaphragm fits AR Pumps’ medium-pressure agricultural spray pumps commonly found on field sprayers, three-point boom sprayers, and ATV spray rigs. These pumps are the workhorses behind countless acres of crop protection and fertilizer application, from spot-spraying weeds to full-field herbicide passes.
Made to Last
Buna rubber is specifically chosen for agricultural spray applications because it stands up to the harsh chemicals you’re pumping. This material maintains its flexibility through hot summer days and doesn’t deteriorate when exposed to common farm chemicals like glyphosate, 2,4-D, or liquid nitrogen solutions.
Installation Notes
Replacing the diaphragm is a straightforward job with basic hand tools. While you’ve got the pump apart, it’s a good time to inspect the valves and clean any residue from the pump chambers. Keep a spare diaphragm in your shop—they’re the most common wear item on diaphragm pumps and having one on hand prevents downtime during critical spraying seasons.
