Graco 183658 Spool Valve

Compatible Machines

• Graco Viscount II Hydraulic Motor – Uses 183658 Spool Valve as OEM replacement in Viscount II systems (common pump motors) :contentReference[oaicite:0]{index=0}
• Graco Viscount® II Pump Assemblies – Component in severe-duty hydraulic piston pump applications (via Viscount II drive systems) :contentReference[oaicite:1]{index=1}

Product Overview

The Graco 183658 Spool Valve is a genuine OEM valve designed for precise fluid control within hydraulic motor systems, specifically engineered to integrate with Quiet Viscount II / Viscount II Hydraulic Motor assemblies. This spool valve enhances fluid metering consistency, reduces pulsation, and ensures smoother performance across demanding industrial and professional coating applications. :contentReference[oaicite:2]{index=2}

Key Features

Installation & Usage Tips

• Ensure the hydraulic system is fully depressurized before installation to prevent injury or damage.
• Verify that the spool valve bore and housing align correctly before tightening fasteners.
• Use only OEM or recommended replacement parts to maintain performance and avoid warranty issues.

Frequently Asked Questions