Description

When your sprayer’s not moving chemicals like it should—low pressure, uneven coverage, or that choppy pulsing that tells you something’s not right inside the pump head—chances are it’s time to replace a worn diaphragm pump piston. This critical component creates the precise back-and-forth motion that moves liquid through your system, and when it starts failing, you’ll feel it every time you pull the trigger.

What You’re Getting

Precision-machined piston designed for consistent stroke and proper pump timing
Durable construction that handles the constant cycling of agricultural spray work
Engineered to work with AR Pumps diaphragm systems for reliable chemical delivery
Built to maintain proper sealing under varying pressure conditions

Built for Real Farm Work

AR Pumps diaphragm systems are the workhorses of agricultural spraying, whether you’re running a small ATV sprayer for spot treatments or a larger boom sprayer for field applications. These pumps handle everything from water to harsh herbicides and pesticides, maintaining consistent flow rates whether you’re spraying weeds along fence rows or applying fungicides across hundreds of acres.

Made to Last

This piston is built to handle the demands of agricultural spraying where consistent performance matters. The materials resist chemical corrosion and maintain their dimensional stability through thousands of pump cycles, ensuring your spray system delivers accurate application rates season after season.

Good to Know

When replacing the piston, it’s a good time to check the condition of your diaphragms and valves too—these components work together and often wear at similar rates. Make sure to follow proper torque specifications when reassembling, as overtightening can cause premature failure. Keep a rebuild kit handy if you’re running high-hour equipment.