AirCoat part 0533440 is a foot valve assembly used in the fluid intake of AirCoat spray systems. It attaches to the siphon hose and contains a check valve that prevents material from draining back into the container when the pump is off. The assembly includes a strainer to filter debris. Replacing a worn or damaged foot valve restores reliable priming, prevents loss of prime, and ensures consistent material flow on compatible AirCoat equipment.
| Part Number | 0533440 |
|---|---|
| Part Description | Foot Valve Assembly |
| Brand | AirCoat |
| Fits | AirCoat 423 |
| Condition | New |
The AirCoat 0533440 Foot Valve Assembly is a complete fluid intake component designed for AirCoat 423 air‑assisted spray systems. It attaches to the end of the siphon hose and sits inside the material container. The assembly contains a check valve that allows material to flow into the pump during operation but closes when the pump stops, preventing the siphon hose from draining and maintaining prime. An integrated strainer filters out particles that could damage the pump or clog the spray tip.
Over time, foot valves can become clogged with dried material, the check ball or seat can wear, or the strainer can become damaged. A failing foot valve leads to loss of prime, difficulty restarting, or erratic material pickup. Replacing the foot valve assembly restores reliable priming, consistent flow, and protects downstream components from debris.
| Prime retention | Prevents material from draining back when pump is off |
|---|---|
| Debris filtration | Integrated strainer stops particles from entering pump |
| One‑way flow | Allows fluid intake during pump stroke, closes during return |
| Loss of prime | Pump loses prime quickly after stopping or fails to prime |
|---|---|
| Clogged strainer | Strainer is blocked and cannot be cleaned effectively |
| Check valve failure | Material flows backward, causing siphon hose to empty |
| Physical damage | Cracked housing, broken strainer, or worn components |
AirCoat part 0533440 is designed for use with the AirCoat 423 air‑assisted spray system. Always confirm fitment using the correct parts diagram for your exact model and revision.
| AirCoat Model | Component |
|---|---|
| AirCoat 423 | Foot Valve Assembly |
The foot valve works with the siphon hose and pump inlet. When replacing the foot valve, these related components are often inspected or replaced at the same time.
Cracks, kinks, or leaks in the hose can cause loss of prime and should be replaced.
The connection point on the pump should be inspected for thread damage or debris.
If the foot valve fails, the pump inlet check valve may also be worn; inspect and replace if needed.
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