Graco 224966 Inlet Valve
$116.93
$130.50
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Graco 224966 Inlet Valve is a genuine OEM fluid-section component designed to maintain proper suction and pressure in Graco airless sprayers. It ensures reliable paint intake and smooth operation during each pump cycle.
- Replaces worn or leaking inlet seat assemblies
- Fits multiple Graco ST-series and Ultra models
- Restores priming efficiency and prevents fluid leaks
- OEM-quality metal construction for durability
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Inlet Valve Overview & Compatibility
Compatible Machines
The Graco 224966 Inlet Valve (also known as 224-966 Intake/Inlet Seat) is used on a range of legacy Graco ST-series and related sprayers. Always verify your sprayer’s exact model and series before ordering.
- Graco 190 ES (ST-style)
- Graco 390 ST / 390 STS
- Graco 395 ST / 395 Duron / 395 EuroPro
- Graco 450 ST
- Graco 455 ST
- Graco 490 ST
- Graco 495 ST / 495 EuroPro
- Graco 600 Ultra / Ultra 600 Plus
- Graco 3000 GM (Lo-Boy / Upright)
- Graco 3000 LineLazer
- ASM 1900 / ASM 1900 Zip-Spray Plus
- Fuller-O’Brien 301 STS Pro
- Graco 290 Easy
What the 224966 Inlet Valve Does
This valve threads into the bottom of the pump’s fluid section, captures the inlet ball, and provides the female connection for the suction tube. It allows coating to enter the pump on the downstroke and seals on the upstroke to maintain prime and pressure.
Quick Specs
| Part Number | 224966 (a.k.a. 224-966) |
|---|---|
| Part Type | Inlet / Intake Valve (Fluid Section) |
| Common Use | Restore suction/priming, fix check-valve leakage, routine pump service |
| Notes | Install per machine manual (clean threads, sealant/torque per spec); confirm model & series |
When to Replace
- Hard priming, frequent loss of prime, or pulsation at the gun
- Material leaking past the inlet seat or visibly worn/damaged seat
- Regular pump overhaul (replace inlet & outlet checks as a set for best results)
Installation Tips (General)
- Disconnect power/pressure, relieve pressure fully, and flush per manual.
- Clean inlet bore/threads; follow your model’s specified thread sealant and torque.
- Inspect/replace the inlet ball and related seals if worn.
- After reassembly, prime with compatible solvent/paint and check for leaks.
Frequently Asked Questions
Check your sprayer’s model + series/serial against the parts manual. Some models (e.g., Duron/EuroPro variants) have series breaks that change valve part numbers. When in doubt, match by parts diagram for your specific serial range.
Slow or failed priming, losing prime during spraying, or material bypass at the inlet seat. If the inlet ball/seat is worn or pitted, the pump won’t hold suction consistently.
It’s smart to inspect/replace the inlet ball, outlet/check valve, and any seals or packings in the fluid section during the same service to restore full performance.
Yes. Bedford part 58-2215 is a well-known replacement that lists compatibility with the same ST-series models. Choose OEM vs aftermarket based on your preference and warranty requirements.
Follow the torque and thread sealant specified in your model’s service manual. Over-tightening can damage the seat or fluid section; under-tightening can cause leakage.
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