0294326 is an upper pressure ring used in the pump fluid section of compatible Spraytech EP series airless sprayers. It helps maintain proper seal compression and pressure integrity within the pump cylinder, contributing to consistent paint flow and reliable operation.
| Part Number | 0294326 |
|---|---|
| Part Description | Upper Pressure Ring |
| Brand | Spraytech |
| Fits | Spraytech EP2300, EP2400, EP2510 |
| Condition | New |
The Spraytech 0294326 Upper Pressure Ring is an OEM replacement component used in the pump fluid section of EP2300, EP2400, and EP2510 airless sprayers. It sits above the seal stack or packing set, distributing compressive force evenly to the seals and maintaining correct preload. This ensures consistent sealing against the piston rod and cylinder wall.
Over time, the upper pressure ring can become worn, cracked, or deformed due to repeated pressure cycles, chemical attack, or improper assembly. A damaged ring can cause uneven seal compression, leading to premature packing failure, pressure loss, fluid bypass, and external leaks. Replacing it with the 0294326 restores proper seal loading and pump performance.
| Seal compression | Distributes retainer nut force evenly across the packing stack |
|---|---|
| Pressure integrity | Helps maintain consistent sealing against the piston rod |
| Prevents bypass | Reduces fluid leakage past the packings |
| Cracked or broken | Visible fracture, especially near the inner or outer edge |
|---|---|
| Warped / dished | Ring no longer sits flat; causes uneven seal loading |
| Corrosion or pitting | Surface damage from paint or solvent exposure |
| Rebuilding pump | Preventative replacement during major overhaul |
Part 0294326 is compatible with the following Spraytech models. Always verify with your machine's parts diagram before ordering.
| Brand / Model | Component |
|---|---|
| Spraytech EP2300 | Upper pressure ring (packing stack) |
| Spraytech EP2400 | Upper pressure ring (packing stack) |
| Spraytech EP2510 | Upper pressure ring (packing stack) |
When replacing the upper pressure ring, these related components are typically replaced or inspected at the same time.
All upper and lower packings should be replaced when the ring is serviced.
Inspect the lower ring; replace as a pair for even loading.
Check for scoring or wear that may have damaged the ring.
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