Part number 700-847 is a Bypass Hose that recirculates material from the pump back to the supply container during priming, flushing, and pressure relief operations on compatible airless sprayer systems. This flexible hose enables efficient system preparation and cleanup while preventing pressure buildup at the spray gun.
| Part Number | 700-847 |
|---|---|
| Part Description | Bypass Hose |
| Fits | Epic 690 GX; Epic 660HPX; Epic 447HPX; Epic 447ex; 690 GXC Airless Sprayer; 660 XC Airless Sprayer; 550 XC Airless Sprayer; 440 XC Airless_Sprayer |
| Condition | New |
Part number 700-847 is a Bypass Hose, a flexible fluid conduit that connects the pump's bypass valve or prime/spray manifold to the material supply container on compatible Epic and XC Series airless sprayers. This hose provides a dedicated return path for fluid when the system is in prime mode, allowing air and solvent to be purged and material to recirculate without pressure at the spray gun.
The bypass hose is essential for several critical sprayer operations. During startup, opening the bypass valve routes fluid through this hose back to the pail, allowing the pump to clear air locks and establish prime. During color changes or end-of-day cleanup, solvent is circulated through the bypass hose to flush material from the pump. When the spray gun is triggered off, the bypass hose may also serve as a pressure relief path, protecting system components from excessive pressure buildup.
This hose is manufactured from solvent-resistant materials capable of withstanding continuous exposure to a wide range of paints, coatings, and cleaning solvents. It is reinforced to prevent kinking and collapse under vacuum conditions during priming. Over time, bypass hoses can become brittle, cracked, soft, or clogged with dried material. A deteriorated bypass hose can leak fluid onto the work area, restrict prime flow causing slow startup, or burst under pressure, creating a safety hazard and significant cleanup.
| Fluid Recirculation | Returns material from the pump to the supply container during prime and flush operations |
|---|---|
| Pressure Relief | Provides a safe path for pressure release when the spray gun is not in use |
| System Priming | Enables rapid air purging and material pickup from the supply container |
| External Leakage | Fluid seeps from the hose body or at crimped fitting connections |
|---|---|
| Physical Degradation | Hose is cracked, brittle, soft, bulging, or has abrasion damage |
| Flow Restriction | Slow or difficult priming due to internal hose collapse or clogging |
| Preventive Maintenance | Replaced during annual service or when other fluid system components are overhauled |
Part number 700-847 is designed for a wide range of Epic and XC Series airless sprayer models. This bypass hose is a model-specific component engineered for these particular sprayer systems. Always confirm fitment using the correct parts diagram for your exact model and serial number.
| Compatible Models | Component |
|---|---|
| Epic 690 GX | Bypass Hose |
| Epic 660HPX | |
| Epic 447HPX | |
| Epic 447ex | |
| 690 GXC Airless Sprayer | |
| 660 XC Airless Sprayer | |
| 550 XC Airless Sprayer | |
| 440 XC Airless_Sprayer |
The bypass hose is part of the sprayer's fluid recirculation system. When servicing this component, these related parts are often inspected or replaced at the same time.
The valve that directs flow to the bypass hose may have worn seals or a damaged handle and should be inspected.
The fittings that attach the hose to the manifold and the return tube should be checked for thread damage and corrosion.
The suction hose and return tube assembly often includes the bypass hose as part of a complete fluid intake system.
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