Part number 800-348 is an Outlet Valve Seal used in Airless Sprayer 1140 I and IX, 740 I and IX, 840 I and IX; Advantage 600, GPX 85; Helix FR, VR; Impact 840 I and IA, 1040, 1140, 1640, 740, 740-840, 840; Performer 1140 IX; PowrLiner 2850, 1800M, 2800M; PowrTex 1200SF; and SprayTech GPX 85. This seal prevents fluid leakage around the outlet valve, ensuring proper pressure retention and reliable pump operation. Replacing a worn, hardened, or damaged outlet valve seal restores pump efficiency and prevents pressure loss.
| Part Number | 800-348 |
|---|---|
| Part Description | Outlet Valve Seal |
| Brand | Multiple |
| Fits | Airless Sprayer 1140 I, 1140 IX, 740 I, 740 IX, 840 I, 840 IX; Advantage 600, GPX 85; Helix FR, VR; Impact 840 I, 840 IA, 1040, 1140, 1640, 740, 740-840, 840; Performer 1140 IX; PowrLiner 2850, 1800M, 2800M; PowrTex 1200SF; SprayTech GPX 85 |
| Condition | New |
The 800-348 Outlet Valve Seal is a critical sealing component used in the pump assembly of various Airless Sprayer, Advantage, Helix, Impact, Performer, PowrLiner, PowrTex, and SprayTech models. It fits around or against the outlet valve to prevent fluid from leaking past the valve, ensuring that pressure is maintained and material flows correctly.
This seal is typically made from durable, chemical‑resistant materials to withstand the high pressures and aggressive solvents found in paints and coatings. Over time, seals can become hardened, cracked, compressed, or worn due to pressure cycles, heat, and chemical exposure. A failing outlet valve seal will result in pressure loss, poor priming, erratic spray patterns, and external leaks. Replacing a worn seal restores pump efficiency and ensures reliable operation.
| Leak prevention | Prevents fluid from leaking past the outlet valve |
|---|---|
| Pressure retention | Maintains system pressure by sealing the valve |
| Flow integrity | Ensures consistent fluid delivery |
| Fluid leaks | Paint seeping from valve area |
|---|---|
| Pressure loss | Drop in output pressure during operation |
| Hardening / cracking | Seal material is brittle or cracked |
| Disassembly | Always replace seal when servicing valve |
Part number 800-348 is compatible with the following models. Always confirm fitment using the correct parts diagram for your exact model and revision.
| Brand / Model | Component |
|---|---|
| Airless Sprayer 1140 I | Outlet Valve Seal |
| Airless Sprayer 1140 IX | Outlet Valve Seal |
| Airless Sprayer 740 I | Outlet Valve Seal |
| Airless Sprayer 740 IX | Outlet Valve Seal |
| Airless Sprayer 840 I | Outlet Valve Seal |
| Airless Sprayer 840 IX | Outlet Valve Seal |
| Advantage 600 | Outlet Valve Seal |
| Advantage GPX 85 | Outlet Valve Seal |
| Helix FR | Outlet Valve Seal |
| Helix VR | Outlet Valve Seal |
| Impact 840 I | Outlet Valve Seal |
| Impact 840 IA | Outlet Valve Seal |
| Impact 1040 | Outlet Valve Seal |
| Impact 1140 | Outlet Valve Seal |
| Impact 1640 | Outlet Valve Seal |
| Impact 740 | Outlet Valve Seal |
| Impact 740-840 | Outlet Valve Seal |
| Impact 840 | Outlet Valve Seal |
| Performer 1140 IX | Outlet Valve Seal |
| PowrLiner 2850 | Outlet Valve Seal |
| PowrLiner 1800M | Outlet Valve Seal |
| PowrLiner 2800M | Outlet Valve Seal |
| PowrTex 1200SF | Outlet Valve Seal |
| SprayTech GPX 85 | Outlet Valve Seal |
When replacing the outlet valve seal, these components are often inspected or replaced at the same time to ensure complete pump reliability.
Inspect for pitting or wear; replace if necessary.
Check for wear or damage; replace if needed.
Weak spring can affect valve operation; inspect and replace if necessary.
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