Description
When your spray pump’s diaphragm starts showing cracks, swelling, or you’re getting uneven pressure, it’s time for a replacement. A worn diaphragm can mess up your spray patterns and cost you time and chemicals. This genuine AR Pumps diaphragm gets your equipment back to working like it should, delivering consistent pressure and reliable performance when you’re covering acres.
What You’re Getting
- Desmopan construction that handles aggressive chemicals and temperature swings better than standard rubber
- Precision-molded design that maintains its flexibility even after thousands of pump cycles
- Chemical-resistant material that won’t swell, crack, or deteriorate from herbicides and pesticides
- Direct replacement that fits properly without modifications or compatibility issues
Built for Real Farm Work
This diaphragm is designed for AR Pumps equipment commonly used on sprayers, chemical applicators, and other agricultural equipment. Whether you’re running a three-point sprayer, self-propelled applicator, or nurse tank setup, this part handles the constant flexing and chemical exposure that comes with field spraying operations.
Made to Last
Desmopan is a tough polyurethane material that outperforms standard rubber diaphragms. It stays flexible in cold weather, resists swelling from chemical contact, and maintains its seal properties longer than cheaper alternatives. You’ll get more seasons out of this diaphragm before needing another replacement.
Installation Notes
Installation is straightforward—just remove the pump head, swap out the old diaphragm, and reassemble. Make sure to clean the mounting surfaces before installing the new diaphragm. A light coating of compatible grease on the mounting bolts helps prevent corrosion and makes future service easier.






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