Part number 704-533 is a pump block designed to house and secure the pump assembly while providing fluid passages and mounting points on compatible Airless Sprayer and RentSpray equipment. This precision‑machined component ensures proper alignment of the pump with the drive system and contains integral check valves and fluid channels for reliable operation. Replacing a cracked, worn, or leaking pump block restores system integrity, prevents fluid loss, and ensures consistent pump performance.
| Part Number | 704-533 |
|---|---|
| Part Description | Pump Block |
| Brand | Airless Sprayer / RentSpray |
| Fits | Airless Sprayer 640 IX; RentSpray 600, 650 |
| Condition | New |
The 704-533 Pump Block is a critical component that serves as the mounting base and fluid distribution center for the pump assembly on Airless Sprayer 640 IX and RentSpray 600/650 models. It aligns the pump with the drive system, contains internal fluid passages, and often houses check valves that ensure proper flow direction and pressure maintenance.
Over time, pump blocks can develop cracks, wear at sealing surfaces, or become clogged with debris. A damaged pump block can cause fluid leaks, pressure drops, erratic pump operation, and contamination of the hydraulic system. Replacing the pump block restores proper fluid routing, eliminates leaks, and ensures reliable, efficient operation of the sprayer.
| Pump mounting | Secures and aligns the pump with the drive system |
|---|---|
| Fluid distribution | Routes fluid through internal passages and check valves |
| Pressure maintenance | Houses components that regulate flow and pressure |
| Fluid leaks | Visible leaks from pump block or seals |
|---|---|
| Cracks / damage | Visible cracks in the block |
| Pressure loss | System cannot maintain rated pressure |
| Contaminated fluid | Debris in fluid indicating internal wear |
Part number 704-533 is compatible with the following equipment models. Always confirm fitment using the correct parts diagram for your exact model and serial number.
| Model | Component |
|---|---|
| Airless Sprayer 640 IX | Pump Block |
| RentSpray 600 | Pump Block |
| RentSpray 650 | Pump Block |
Pump block issues may involve associated components. When servicing the pump block, these parts are commonly inspected or replaced at the same time.
Valves housed in the pump block may be worn; inspect and replace as needed.
Replace all seals when installing a new pump block to ensure leak‑free operation.
Inspect the pump itself for wear or damage that may have contributed to block failure.
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