Graco 166811 Seat Valve
$30.00
Available to Order
The Graco 166811 Seat Valve is a precision sealing component designed to restore proper shut-off and prevent internal leakage in Graco spray systems.
- OEM-spec replacement
- Improves pressure stability
- Reduces internal fluid bypass
- Fits Ultra, King, and Reactor models
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Graco 166811 Seat Valve – OEM Replacement Component
Compatible Machines
- Graco Ultra 395 (U395-500 Series)
- Graco Ultra 495 (U495-600 Series)
- Graco Ultra 695 (U695-700 Series)
- Graco King 1295 (K1295-800 Series)
- Graco King 1695 (K1695-900 Series)
- Graco King 2495 (K2495-100 Series)
- Graco Reactor E-10 (RE10-200 Series)
- Graco Reactor E-20 (RE20-300 Series)
- Graco Reactor E-30 (RE30-400 Series)
The Graco 166811 Seat Valve is a crucial sealing component used inside the valve assembly of various professional Graco spray systems. It ensures tight shut-off, prevents internal fluid leakage, and maintains stable spraying pressure. If the valve seat is worn or damaged, replacing it restores proper pump function and prevents performance loss.
Key Features
- OEM-spec replacement seat for Graco valve assemblies.
- Restores proper sealing and reduces unwanted fluid bypass.
- Helps maintain consistent spray pressure and smooth performance.
- Durable material designed for long service life in high-pressure systems.
Technical Details
| Part Number | 166811 |
| Component Type | Seat Valve |
| Used In | Valve / Pump Assembly |
| Application | Professional Airless Sprayers & Reactor Systems |
Why Replace the Seat Valve?
- Eliminates internal leaks and restores proper valve shut-off.
- Improves priming and overall spraying consistency.
- Protects other valve components from premature wear.
- Ensures your system maintains correct operating pressure.
Frequently Asked Questions
It provides a precise sealing surface inside the valve assembly, ensuring proper shut-off and preventing internal fluid leakage during operation.
Symptoms include pressure fluctuation, difficulty maintaining spray pattern, internal leakage, or poor pump shut-off. Visible wear or scoring on the seat also means replacement is required.
Yes, this seat valve is manufactured to OEM specifications for precise fit and performance in compatible Graco spray systems.
Yes, installation is straightforward for users familiar with Graco pump or valve maintenance. Always follow your model’s manual and ensure components are aligned correctly during reassembly.
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