SprayTech part 0551661 is an inlet valve housing with a long tube used in the fluid intake system of select airless sprayers. It houses the inlet valve assembly and draws paint from the container into the pump. Replacing a worn or cracked housing restores proper fluid flow and pump prime.
| Part Number | 0551661 |
|---|---|
| Part Description | Inlet Valve Housing, Long Tube |
| Brand | SprayTech / Advantage |
| Fits | Advantage 600; SprayTech Airless Advantage EPX2355; SprayTech Airless EPX2355 |
| Condition | New |
The SprayTech 0551661 Inlet Valve Housing, Long Tube is an OEM replacement component that serves as the intake manifold for the pump. It houses the inlet valve (check valve) and features an extended pick‑up tube that draws paint from the container into the fluid section.
Over time, the housing can become cracked, warped, or clogged with dried paint. A compromised inlet housing can cause loss of prime, reduced flow, or air ingestion into the system. Replacing with this genuine part restores proper suction, consistent pump performance, and reliable priming.
| Fluid intake | Draws paint from the container into the pump cylinder |
|---|---|
| Valve support | Houses the inlet check valve that controls flow direction |
| Prime retention | Helps maintain prime by providing a sealed path from container to pump |
| Loss of prime | Pump won't prime or loses prime frequently |
|---|---|
| Visible damage | Cracks, warping, or leaks around the housing or tube |
| Clogging / restriction | Hardened paint or debris inside the housing that cannot be cleaned effectively |
| Air ingestion | Air bubbles in the spray pattern traced to the inlet side |
SprayTech part 0551661 is a direct replacement inlet valve housing with long tube for the following models:
| Brand / Model | Application |
|---|---|
| Advantage 600 | Inlet valve housing / pick‑up tube assembly |
| SprayTech Airless Advantage EPX2355 | Inlet valve housing / pick‑up tube assembly |
| SprayTech Airless EPX2355 | Inlet valve housing / pick‑up tube assembly |
Replacing the housing often calls for a new inlet valve kit to ensure proper sealing and pump efficiency.
A new gasket or O‑ring is recommended when reinstalling the housing to prevent air leaks.
Inspect and clean or replace the inlet strainer to avoid debris entering the pump.
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