GRACO VALVE PISTON NUT (FOR 390/395/490) 239937

Restore your Graco airless paint sprayer’s performance with the Graco 239937 Piston Valve. This high-quality OEM part is engineered for several Graco models including 390, 395, 490, 495, 595, 695, and Ultra/UltraMax / Ultimate MX/PC series. It replaces the worn piston valve, which is critical for maintaining pump pressure, preventing leaks, and ensuring consistent coating application.

Whether you are a professional painter, contractor, or DIY user, replacing the piston valve at the first sign of wear ensures cleaner output, less maintenance, and prolonged sprayer life.

Key Features:

• ✅ OEM Graco part (Part # 239937)

• ✅ Compatible with multiple Graco airless spray pumps (390 / 395 / 490 / 495 / 595 / 695 / Ultra / UltraMax / Ultimate MX etc.) Paint Sprayer Parts Online+1

• ✅ Precision-machined for tight seal and durability

• ✅ Helps rejuvenate pump performance by restoring proper fluid flow and pressure

• ✅ Ideal for maintenance & repair kits

Specifications:

• Part number: 239937

• Type: Piston Valve replacement / Piston Seat Valve

• Material: Metal (stainless steel or OEM equivalent) to resist wear & corrosion

• Applications: Used in Graco airless spray pumps (models listed above)

• OEM or Aftermarket Assembly options available Spraywell

Suitable For:

• Graco 390, 395, 490, 495, 595, 695 series

• UltraMax / Ultimate MX / Magnum / Ultra models needing piston valve repair

• Contractors & painting service businesses needing part replacements