Description

If you’ve noticed your Solo backpack sprayer isn’t holding pressure like it used to, a worn or missing pressure cylinder plug might be the culprit. This small but crucial part seals off access points in the pump cylinder, keeping your sprayer pressurized and working efficiently. When it’s compromised, you’ll find yourself pumping more often and getting weaker spray pressure just when you need to get the job done.

What You’re Getting

Direct factory replacement that fits just like the original
Proper seal prevents pressure loss and maintains consistent spray performance
Durable construction designed to handle farm chemicals and pressure cycles
Easy installation with standard threading

Built for Real Farm Work

This plug is specifically designed for Solo’s popular 425 and 475 backpack sprayers—workhorses you’ll find on farms and ranches handling everything from weed control along fence lines to treating livestock areas. These sprayers see regular use in tough conditions, and every component needs to hold up to daily chemical exposure and the constant pressure cycling that comes with spray work.

Made to Last

Solo builds their sprayer parts to handle the harsh chemicals and pressure demands of agricultural use. This plug maintains its seal integrity through temperature changes, chemical exposure, and the vibration that comes with backpack spraying operations. It’s designed to keep working season after season.

Installation Notes

Installation is straightforward—just thread out the old plug and thread in the new one. Apply a small amount of thread sealant to ensure a leak-free connection. If the old plug has been in place for a while, a little penetrating oil can make removal easier.