Main Diaphragm for Solo 425 and 475 Backpack Sprayers

Description

When your Solo sprayer starts losing pressure or pumping gets harder than it should be, the diaphragm is usually the culprit. This is the heart of your pump that creates the pressure and flow you need for even coverage, whether you’re spot-treating fence rows or mixing up a tank for the vegetable garden. A worn diaphragm means more pumping for less pressure, and nobody’s got time for that.

What You’re Getting

• Chemical resistant construction that stands up to herbicides, pesticides, and fertilizers
• Precise fit that restores your pump’s original performance and pressure
• Durable material that handles the constant flexing of pump cycles
• Direct replacement that gets your sprayer back to working like new

Built for Real Farm Work

This diaphragm fits Solo’s popular 425 and 475 backpack sprayers that thousands of farmers and ranchers rely on for everything from pasture spraying to fence line maintenance. These are the workhorses you grab when you need to cover serious ground but don’t want to pull out the big boom sprayer.

Made to Last

Solo builds their sprayers to handle the chemicals and conditions that come with farm work, and this diaphragm is no exception. The material is designed to resist chemical degradation and maintain its flexibility through thousands of pump cycles, so you’re not replacing it every season.

Installation Notes

Replacing the diaphragm is straightforward with basic tools—just remove the pump housing, swap out the old diaphragm for the new one, and reassemble. Keep the pump lubricated and rinse the tank after using harsh chemicals to get the most life out of it. While you’ve got it apart, it’s a good time to check the other pump components for wear.