AirCoat part 0533423 is a pump block used as the central fluid manifold in AirCoat spray systems. It houses the fluid passages, check valves, and piston/plunger assembly, providing the structural foundation for the pump fluid section. Replacing a worn, cracked, or corroded pump block restores proper fluid flow, seal alignment, and pressure integrity on compatible AirCoat equipment.
| Part Number | 0533423 |
|---|---|
| Part Description | Pump Block |
| Brand | AirCoat |
| Fits | AirCoat 423 |
| Condition | New |
The AirCoat 0533423 Pump Block is the central fluid manifold in AirCoat 423 air‑assisted spray systems. It forms the structural core of the pump fluid section, containing precision‑machined passages that direct material from the inlet housing to the piston/plunger and then to the outlet. The block also provides mounting surfaces for the inlet and outlet check valves, seals, and packing retainers.
Over time, pump blocks can suffer from corrosion due to aggressive coatings, cracking from freeze damage or overtightening, or wear in the cylinder bore that compromises sealing. A damaged pump block may cause internal fluid bypass, external leakage, loss of pressure, or misalignment of the piston/plunger assembly. Replacing a compromised pump block restores the pump’s hydraulic integrity and ensures reliable, consistent performance.
| Fluid manifold | Contains precision fluid passages for material flow |
|---|---|
| Component mounting | Provides mounting for check valves, seals, and packing |
| Structural foundation | Houses the piston/plunger and maintains alignment |
| Cracks or leaks | Visible cracks or external leaks from the block |
|---|---|
| Corrosion | Heavy corrosion, pitting, or erosion of fluid passages |
| Pressure loss | Inability to build or maintain operating pressure |
| Bore wear | Scoring or out‑of‑round cylinder bore affecting seal performance |
AirCoat part 0533423 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 | Pump Block |
The pump block integrates with many fluid section components. When replacing the block, these related parts should be carefully inspected and often replaced at the same time.
Balls, cages, and seats (e.g., 0533414, 0533424) should be replaced to ensure fresh sealing surfaces.
Scoring or wear on the piston/plunger can damage a new block; replace if needed.
Housings (e.g., 0533418) and seals should be inspected for cracks or corrosion.
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