Part number 704-703 is a genuine inlet valve cage used in Advantage, Impact, Impact X, PowrLiner, and RentSpray airless sprayers. This cage houses the inlet valve components, including the valve seat, ball, and spring, ensuring proper alignment and operation of the intake system. It directs fluid flow into the pump during the suction stroke and prevents backflow during the discharge stroke. A worn, cracked, or corroded inlet valve cage can cause loss of prime, reduced pressure, and poor spray performance. This genuine replacement restores proper valve operation and reliable pump performance.
| Part Number | 704-703 |
|---|---|
| Part Description | Inlet Valve Cage |
| Brand |
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| Fits |
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| Condition | New |
The 704-703 Inlet Valve Cage is a genuine OEM component designed for a wide range of airless sprayers. This precision-machined cage houses the inlet valve assembly, including the valve seat, ball, and spring, and directs fluid flow into the pump during the suction stroke while preventing backflow during the discharge stroke.
The inlet valve cage is critical to proper pump operation. It maintains alignment of the valve components, ensures proper seating of the valve ball, and provides the correct fluid passages for efficient priming and pressure generation. A damaged or worn cage can cause the valve components to misalign, leading to loss of prime, pressure fluctuations, reduced output, and poor spray performance.
This genuine replacement cage is manufactured to exact factory specifications for critical dimensions, material composition, and surface finish. Using the correct cage ensures proper valve operation, reliable priming, and consistent pressure output. Replacing a worn or damaged inlet valve cage restores the pump's ability to draw fluid efficiently and maintain pressure during operation.
| Component housing | Houses and aligns inlet valve seat, ball, and spring |
|---|---|
| Flow direction | Directs fluid into pump during suction stroke |
| Backflow prevention | Ensures valve closes properly to prevent reverse flow |
| Priming assistance | Critical for proper pump priming and pressure buildup |
| Loss of prime | Pump will not draw fluid or loses prime during operation |
|---|---|
| Pressure fluctuation | Spray pressure surges or drops erratically |
| Visible wear / corrosion | Cage shows corrosion, pitting, or wear on sealing surfaces |
| During valve service | Always inspect cage when rebuilding inlet valve |
Part 704-703 is compatible with the following sprayer models. Always verify your machine's parts diagram to confirm correct fitment.
| Brand / Model | Component |
|---|---|
| Advantage 500 | Inlet Valve Cage |
| Advantage 400 | Inlet Valve Cage |
| Impact 340 | Inlet Valve Cage |
| Impact 400 | Inlet Valve Cage |
| Impact 410 | Inlet Valve Cage |
| Impact 440 | Inlet Valve Cage |
| Impact 630 I | Inlet Valve Cage |
| Impact 630 IA | Inlet Valve Cage |
| Impact 640 | Inlet Valve Cage |
| Impact X 410 | Inlet Valve Cage |
| Impact X 440 | Inlet Valve Cage |
| Impact X 540I | Inlet Valve Cage |
| PowrLiner 1800M | Inlet Valve Cage |
| PowrLiner 2800M | Inlet Valve Cage |
| RentSpray 500 | Inlet Valve Cage |
| RentSpray 600 | Inlet Valve Cage |
When replacing the inlet valve cage, it's good practice to inspect these related components, as they are often serviced during the same repair.
Inspect the valve ball and seat for wear, pitting, or damage. Replace if necessary to ensure proper sealing.
Check the valve spring for loss of tension or corrosion. Replace to maintain proper valve closing force.
Replace any seals or gaskets associated with the inlet valve assembly to prevent leaks.
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