Part number 0138424A is a Prime/Spray Assembly Manifold. This component directs fluid flow within compatible pump systems, allowing the operator to switch between prime mode for recirculation and spray mode for application. It is a critical control element for pump operation and material management.
| Part Number | 0138424A |
|---|---|
| Part Description | Prime/Spray Assembly Manifold |
| Fits | Helix VR; Helix FR |
| Condition | New |
Part number 0138424A is the Prime/Spray Assembly Manifold, a fluid routing component that mounts to the pump outlet. This manifold contains an internal valve mechanism that directs pressurized fluid to one of two paths: the return hose for priming or recirculation, or the spray hose for application. The operator controls this function via an external knob or lever on the manifold body.
This assembly is essential for proper pump operation. During startup, the prime mode allows air and solvent to be purged from the system without pressure building at the gun. Once primed, switching to spray mode directs full fluid pressure to the gun for application. A failing manifold can cause leaks, difficult shifting between modes, or unintended fluid recirculation during spraying.
| Flow Direction Control | Routes fluid either back to the supply (prime) or to the spray gun |
|---|---|
| System Priming | Allows air and solvent to be purged without building pressure at the gun |
| Pressure Isolation | Prevents accidental spray during startup and system flushing |
| External Leakage | Fluid seeps from the valve stem, housing seams, or mounting points |
|---|---|
| Difficult Operation | Prime/spray selector is stiff, binds, or will not stay in position |
| Internal Bypass | Fluid continues to recirculate in spray mode, causing low pressure at the gun |
| Physical Damage | Cracked manifold body, broken selector handle, or stripped mounting threads |
Part number 0138424A is designed for the Helix VR and Helix FR series pumps. This manifold assembly is specific to these models. Always confirm fitment using the correct parts diagram for your exact pump model and serial number.
| Compatible Models | Component |
|---|---|
| Helix VR | Prime/Spray Assembly Manifold |
| Helix FR |
The prime/spray manifold is part of the pump's outlet system. When servicing this component, these related parts are often inspected or replaced at the same time.
The outlet check valve is located upstream of the manifold and may be serviced during manifold replacement.
The prime return hose attaches directly to the manifold and may be brittle, cracked, or clogged.
The seal between the manifold and pump body should be replaced whenever the manifold is removed.
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