Graco 16P181 Prime Valve Replacement Kit

Graco 16P181 Prime Valve Replacement Kit – OEM Pump Service Part

Compatible Machines

This 16P181 Prime Valve Kit is used on select Graco sprayers where this prime-valve module appears in the pump schematic. Always confirm using your sprayer’s parts manual.

• Graco Handheld & Compact Airless Sprayers (models listing part 16P181)
• Some Contractor / Pro Airless Units with matching pump schematic

The Graco 16P181 Prime Valve Kit is an OEM replacement assembly designed to restore proper priming performance in airless sprayers. A worn prime valve can cause slow priming, pressure drop, or inconsistent flow. Replacing this valve helps maintain smooth pump operation and reliable paint delivery.

Key Features

• OEM-grade assembly ensures proper sealing and smooth priming
• Helps correct issues such as slow pressure build, sputtering, or fluid leak-back
• Designed for Graco sprayers that specify 16P181 in the fluid-section breakdown

Installation Notes

• Always relieve system pressure before servicing the sprayer
• Remove the old prime-valve module and inspect surrounding pump components
• Install the new valve following torque and positioning guidelines in the machine manual
• Prime the sprayer at low pressure after installation to confirm steady flow and no leakage

Frequently Asked Questions