Graco 183658 Spool Valve
$787.00
Available to Order
The Graco 183658 Spool Valve is a genuine OEM replacement designed for precise hydraulic flow control in Viscount II motor systems, helping maintain smooth and reliable pump operation.
- OEM Part Number: 183658
- Application: Viscount II Hydraulic Motor
- Function: Regulates internal hydraulic fluid flow
- Build: Precision-machined for long service life
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Compatible Machines
- Graco Viscount II Hydraulic Motor – Uses 183658 Spool Valve as OEM replacement in Viscount II systems (common pump motors)
- Graco Viscount® II Pump Assemblies – Component in severe-duty hydraulic piston pump applications (via Viscount II drive systems)
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.
Key Features
| Part Number | 183658 |
|---|---|
| Application | Spool valve for Viscount II Hydraulic Motor assemblies in Graco industrial spray systems |
| Construction | Precision-machined for durable, reliable fluid metering |
| Function | Controls internal fluid flow and contributes to smooth pressure regulation |
| Compatibility | OEM part for Graco Viscount II driven pump systems |
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
The spool valve regulates internal fluid flow within a hydraulic motor drive such as the Viscount II, ensuring consistent actuation and smoother operation under varying pressures.
This part is specifically intended for use within the Viscount II Hydraulic Motor and related pump systems. It is not a universal sprayer valve for every Graco model.
If you are experienced with hydraulic components and safety protocols, you can replace the spool valve yourself. Otherwise, consider professional service to avoid improper fitment or damage.
Regular inspection as part of scheduled maintenance is recommended. Check for wear, leaks, or rough operation each season or with high cycle counts.
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