The Graco 222437 Intake Valve is a genuine OEM part designed for reliable fluid intake and consistent spray performance. It helps restore prime and pressure stability in your sprayer pump.
Use this list to quickly verify fitment before ordering. If your sprayer is listed, the Graco 222437 Intake Valve is the OEM-style inlet/check valve used at the pump intake.
The Graco 222437 Intake Valve is the lower pump inlet/check valve that controls fluid entry into the pump chamber on each stroke. A tight-sealing intake valve improves priming, reduces pulsation, and maintains steady spray output. Replacing a worn valve often resolves hard-to-prime behavior, surging, or inconsistent pressure.
| Part Number | 222437 |
|---|---|
| Type | Inlet / Intake Check Valve Assembly |
| Install Location | Lower pump intake (suction side) |
| Primary Function | Allows fluid into the pump on the upstroke; prevents backflow on the downstroke |
| Fits | See Compatible Machines list above |
| Common Symptoms Fixed | Hard priming, pulsation, pressure fluctuation, loss of output |
| Frequently Asked Questions |
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Check your unit’s parts manual for the pump assembly bill of materials. If it lists 222437 at the intake (inlet) position, it’s the correct valve for your model/revision. When in doubt, match by model and serial range.
Hard or slow priming, intermittent flow, surging/pulsation, or difficulty achieving/holding pressure often point to a worn or leaking intake valve seat/ball/spring.
It’s good preventive maintenance to inspect both intake and outlet valves together. If runtime is high or symptoms persist, replace both so the check-pair seals properly and performance is restored.
Yes—when purchased as Graco 222437 it is an OEM-specified intake valve. Aftermarket equivalents may exist but verify quality and dimensions if not using OEM.
Depressurize, flush, and clean the intake port. Inspect threads and seats, apply manufacturer-approved sealant if specified, and torque to spec. Prime at low pressure to confirm seal before returning to normal operation.
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