SprayTech part 0294788 is a Belleville washer kit used in the fluid section or pressure control stack on compatible SprayTech airless sprayers. These conical spring washers provide consistent tension and compensate for wear in the valve or packing assembly. A worn or collapsed Belleville stack can cause pressure fluctuation, leakage, or loss of prime. Replacing the kit restores proper spring force and reliable pump operation.
| Part Number | 0294788 |
|---|---|
| Part Description | Belleville Washer Kit |
| Brand | Titan |
| Fits |
SprayTech Airless EP2510, EP2400, EP2300, EP2300 SE |
| Condition | New |
The SprayTech 0294788 Belleville Washer Kit contains a set of conical spring washers (Belleville discs) that provide precise preload and compensation for thermal expansion and wear in the pump's valve or packing stack. These washers are typically found in the pressure control assembly, around the piston rod, or behind the packing nut.
Over time, Belleville washers can lose their spring rate due to metal fatigue, corrosion, or permanent flattening. A weakened stack results in inadequate sealing force, causing pressure loss, leakage past packings, or difficulty building prime. Replacing the entire kit restores factory‑spec spring tension and extends pump life.
| Maintain packing tension | Keep packings compressed against piston rod |
|---|---|
| Compensate for wear | Automatically adjust as packings wear down |
| Absorb vibration | Dampen pressure pulses in fluid section |
| Provide consistent preload | Deliver precise spring force regardless of temperature |
| Pressure loss / surging | Pump fails to maintain steady pressure |
|---|---|
| Packing leakage | Paint leaks past rod even after tightening packing nut |
| Loss of prime | Difficulty building pressure, especially after storage |
| Flattened or cracked washers | Visible deformation or breakage during inspection |
SprayTech part 0294788 is a direct replacement Belleville washer kit for the following models. Always verify with your machine's parts diagram for exact placement and quantity.
| Model | Component |
|---|---|
| SprayTech Airless EP2510 | Belleville washer kit |
| SprayTech Airless EP2400 | Belleville washer kit |
| SprayTech Airless EP2300 | Belleville washer kit |
| SprayTech Airless EP2300 SE | Belleville washer kit |
When replacing Belleville washers, inspect or replace these associated components.
Worn packings are often the root cause; replace together for a complete pump seal repair.
Scored or corroded rod will damage new packings and washers.
Check for damaged threads or deformation that could affect preload.
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