Description
When your Solo 425 backpack sprayer starts losing pressure or won’t pump like it used to, chances are good the piston is worn out. If you’ve been pumping harder to get the same pressure, or notice the sprayer won’t hold pressure when you stop pumping, it’s time to rebuild that pump. This replacement piston gets you back to consistent spraying without having to buy a whole new unit.
What You’re Getting
- Direct replacement piston that fits Solo Model 425 backpack sprayers perfectly
- Precision-machined for proper seal and smooth operation in the pump chamber
- Durable construction that handles the constant cycling of pump operation
- OEM-quality part that restores your sprayer’s original performance
Built for Real Farm Work
The Solo 425 is a 4-gallon piston pump backpack sprayer that’s popular for spot spraying weeds, applying herbicides, and handling other around-the-farm spray jobs. Whether you’re treating fence rows, spraying around buildings, or tackling brush control, this sprayer sees plenty of action. When the piston wears out from all that pumping, this replacement part gets you back in business.
Made to Last
Solo builds their sprayers to handle farm chemicals and constant use, and their replacement parts are built to the same standards. This piston is designed to seal properly against the pump chamber walls and handle the pressure cycles that come with backpack sprayer operation. It’ll restore the tight seal you need for efficient pumping.
Good to Know
Replacing the piston usually means taking apart the pump assembly, so it’s a good time to check the other seals and gaskets while you’re in there. Clean the pump chamber thoroughly and lubricate the new piston according to Solo’s recommendations. A little pump oil on the seals during assembly helps everything go together smoothly and extends the life of your repair.
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