Titan part 0509708 is a seat o‑ring designed to provide a leak‑tight seal between the valve seat and the pump housing on compatible Advantage, PowrBeast, PowrLiner, and SprayTech sprayers. This o‑ring prevents fluid bypass, maintains proper pressure, and ensures consistent spray performance. Replacing a worn, flattened, or damaged seat o‑ring restores sealing integrity, eliminates leaks, and helps maintain optimum pump efficiency.
| Part Number | 0509708 |
|---|---|
| Part Description | Seat O‑Ring |
| Brand | Titan |
| Fits | Advantage GPX 165, GPX 220; PowrBeast 4700, 7700, 9700; PowrLiner 4950, 6950; SprayTech GPX 165, GPX 220, GPX 1600, LC 1600 |
| Condition | New |
The Titan 0509708 Seat O‑Ring is a critical sealing component used in the fluid section of compatible Titan sprayers. It sits between the valve seat and the pump housing, creating a positive seal that prevents material from bypassing the valve. A properly functioning o‑ring ensures consistent pressure, reduces pulsation, and minimizes waste due to internal leaks.
Over time, exposure to harsh coatings, solvents, and normal wear can cause the o‑ring to become flattened, hardened, or cracked. A compromised seal leads to pressure loss, erratic spray patterns, or fluid leaking from the pump area. Replacing the seat o‑ring restores full sealing performance and allows the sprayer to operate at its rated pressure and flow.
| Seals valve seat | Prevents fluid bypass between seat and housing |
|---|---|
| Maintains pressure | Helps the pump build and hold stall pressure |
| Prevents leaks | Eliminates external weeping from pump manifold |
| Pressure loss | Pump struggles to reach stall pressure or pressure drops under load |
|---|---|
| Fluid leakage | Visible seepage around the valve seat or pump manifold |
| Worn / flattened | O‑ring shows signs of compression set, cracks, or hardness |
| During rebuild | Always replace when servicing the valve seat or fluid section |
Titan part 0509708 is compatible with the following Titan sprayer models. Always confirm fitment using the correct parts diagram for your exact model and serial number.
| Models | Component |
|---|---|
| Advantage GPX 165 | Seat O‑Ring |
| Advantage GPX 220 | Seat O‑Ring |
| PowrBeast 4700 | Seat O‑Ring |
| PowrBeast 7700 | Seat O‑Ring |
| PowrBeast 9700 | Seat O‑Ring |
| PowrLiner 4950 | Seat O‑Ring |
| PowrLiner 6950 | Seat O‑Ring |
| SprayTech GPX 165 | Seat O‑Ring |
| SprayTech GPX 220 | Seat O‑Ring |
| SprayTech GPX 1600 | Seat O‑Ring |
| SprayTech LC 1600 | Seat O‑Ring |
When replacing the seat o‑ring, it is good practice to inspect and often replace these associated components to ensure a complete and reliable repair.
The seat can become worn or pitted. Replace if the sealing surface is damaged.
For complete fluid section performance, consider replacing the ball and seat assembly.
If the pump has been leaking or showing pressure issues, packings may also need service.
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