OEM Titan Prime/Spray Valve Assembly
Titan 0555850 Prime/Spray Valve Assembly is an OEM control valve that directs fluid flow between prime and spray modes on compatible AirCoat Air-Assisted Airless Sprayers, SprayTech ED655, and Multi Finish Spray System 300 equipment.
Compatibility Table
OEM prime/spray valve assembly restores proper flow control, enables safe priming and pressure relief, and ensures reliable spray operation.
Titan Prime/Spray Valve Assembly Replacement
Titan 0555850 is an OEM prime/spray valve assembly that controls the flow of coating material from the pump, allowing the operator to switch between PRIME and SPRAY modes on compatible AirCoat Air-Assisted Airless Sprayers, SprayTech ED655, and Multi Finish Spray System 300 equipment.
| Detail | Technical / Commercial Information |
|---|---|
| Product Overview | Genuine Titan prime/spray valve assembly that controls the flow from the paint pump. Included as Item 5 in the AirCoat parts diagram. The assembly contains a metal spring, nut, lock washer, nozzle, retaining nut, valve, plastic knob and housing, and lubricating gels. |
| Function | Directs fluid flow from the pump to either the return line (PRIME position) or the spray gun (SPRAY position). Enables safe priming and pressure relief by allowing material to recirculate without building pressure at the spray gun. Provides positive shut-off between modes to prevent accidental spraying. Enables the operator to quickly switch between modes for efficient operation. |
| Industrial Applications | Professional sprayer repair, prime/spray valve maintenance, flow control servicing, and rental fleet equipment repair. |
| Compatible Titan Machines | Titan AirCoat Air-Assisted, SprayTech ED655, SprayTech Multi Finish Spray System 300. |
| Accurate Part Number | 0555850 Prime/Spray Valve Assembly (also referenced as 555850). |
| Related Parts Commonly Serviced Together | Inlet valve assembly (0278242), paint pump (0278334), outlet seal (0278362), return hose assembly (0508614), and inlet filter (0295565). |
| Common Problems Solved | Valve not switching between PRIME and SPRAY modes, fluid leaking from the valve body, poor or erratic spray performance, stuck or difficult-to-turn knob, and loss of prime. |
| Service Guidance | If the valve does not switch properly, leaks, or causes poor spray performance, replace the assembly. You will need a wrench to replace this item. Before removing the valve, relieve pressure by turning the PRIME/SPRAY valve to PRIME and opening the gun. When installing the new valve, ensure the O-rings are lubricated with compatible gel and the valve is correctly aligned. Always check for leaks after installation. |
| Use with Coating Systems | Supports AirCoat air-assisted airless sprayers used in industrial coatings, cabinetry, wood finishing, and metal fabrication applications. |
| Commercial Benefits | Restores proper flow control between prime and spray modes, enables safe pressure relief, ensures reliable spray performance, and prevents leaks. |
The 0555850 Prime/Spray Valve Assembly is a critical control component that directs fluid flow from the pump to either the return line (PRIME position) or the spray gun (SPRAY position). This assembly enables safe priming and pressure relief, allowing material to recirculate without building pressure at the spray gun. A faulty valve can cause fluid leaks, poor spray performance, or the inability to switch between modes. Common failure modes include internal seal wear that causes leaks into the return line, a stuck knob, or valve body damage. If you notice the valve not switching properly, fluid leaking from the valve body, erratic spray performance, or loss of prime, replace the assembly. Before removing the valve, relieve pressure by turning the valve to PRIME and opening the gun. Install the new valve with lubricated O-rings and check for leaks after installation.
Quick answers for confirming fitment, function, and service value.
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