Pressure Control Valve Assembly for Airless Paint Sprayer 390

Pressure Control Valve Assembly for Airless Paint Sprayers (Model 390)

Keep your airless paint sprayer running at peak performance with this high-quality Pressure Control Valve Assembly, engineered specifically for Graco 390 and compatible airless paint sprayer models. Featuring a precision pressure-sensing system, durable brass construction, and a plug-and-play 2-pin connector, this replacement knob assembly helps you maintain consistent spray pressure and a uniform finish — job after job.

Made in Mainland China.

Key Features

• Corrosion-Resistant Brass Inlet Connector: Crafted from solid high-purity brass, this inlet connector delivers outstanding wear and corrosion resistance. It forms a tight seal with your sprayer's pipeline to prevent pressure loss and liquid seepage during extended operation, reducing your maintenance costs over time.
• Rugged Reinforced ABS Housing: The heavy-duty outer shell is constructed from high-strength reinforced ABS engineering plastic, offering excellent impact resistance, oil resistance, and dustproofing. It's built to handle tough job-site environments and extends the overall service life of the assembly.
• High-Precision Pressure Sensing System: Internal high-sensitivity pressure-sensing components continuously and accurately monitor pipeline pressure in real time. This enables automatic start-stop control, maintains stable output pressure, ensures a uniform spray pattern, and minimizes unnecessary paint waste.
• Flame-Retardant Insulated Wiring Harness: The assembly uses a thickened, flame-retardant PVC-insulated copper-core wire with excellent high-temperature resistance, aging resistance, and reliable insulation — protecting against short circuits and electrical risks under a wide range of working conditions.
• Universal Plug-and-Play Compatibility: Standard brass thread sizing and a universal 2-pin power connector make this valve assembly compatible with most mainstream airless paint sprayer models. Installation is quick and straightforward — no special tools required.

Specifications

Note: Due to monitor calibration differences, the actual product color may vary slightly from images shown.

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Helpful Resources

For general guidance on safe use of spray finishing equipment and protective measures on the job site, visit the OSHA Spray Finishing Safety Resource.

Learn more: Aerosol spray dispenser

Frequently Asked Questions

Q: Which airless paint sprayer models is this pressure control valve assembly compatible with?

A: This pressure control valve assembly is designed primarily for the Graco 390 airless paint sprayer and is also compatible with most other mainstream airless paint sprayer models that use standard brass thread sizing and a 2-pin power connector. If you're unsure, compare the connector type and thread size with your existing unit before purchasing.

Q: Is this pressure control valve assembly easy to install?

A: Yes! The assembly is designed for plug-and-play installation. The standard brass thread and universal 2-pin connector allow you to swap out your old valve assembly quickly without needing specialized tools. Simply disconnect the old unit, thread in the new brass connector, and plug in the wiring harness.

Q: How does the pressure-sensing system help with spray consistency?

A: The built-in high-sensitivity pressure-sensing components continuously monitor the pipeline pressure in real time. When pressure fluctuates, the system automatically triggers start-stop control to maintain a stable, consistent output pressure — helping you achieve a smooth, even spray pattern and reducing paint waste throughout the job.

Q: What makes the wiring harness safe to use in demanding job-site conditions?

A: The wiring harness uses a thickened, flame-retardant PVC-insulated copper-core wire. This construction provides strong resistance to high temperatures, aging, and electrical breakdown, greatly reducing the risk of short circuits or electrical faults even in hot, dusty, or demanding work environments.