

Part 155-225 is a replacement stainless steel ball for compatible Admiral and Commander spray equipment. This precision ball serves as a check valve component, allowing one-way flow of material. When the original ball becomes worn, pitted, or damaged, replacement restores proper valve sealing and pump performance.
| Part Number | 155-225 |
|---|---|
| Part Description | Stainless Ball |
| Brand | Universal |
| Fits | Admiral; Commander |
| Condition | New |
The 155-225 stainless steel ball is a direct replacement check valve component for Admiral and Commander spray equipment. This precision-ground ball is used in various valve assemblies throughout the fluid system, most commonly in inlet and outlet check valves. It seats against a valve seat to prevent backflow during the pressure stroke and lifts during the intake stroke to allow material flow. A smooth, perfectly round, and corrosion-resistant ball is essential for achieving a positive seal and reliable valve operation. Stainless steel construction provides excellent resistance to corrosion from paints, solvents, and cleaning agents, ensuring long service life. A worn, pitted, or out-of-round ball can cause leakage, pressure loss, reduced pump efficiency, and difficulty priming. Symptoms may include loss of prime, erratic pressure, and material backflow. This replacement ball is manufactured to exact specifications for diameter, roundness, and surface finish. Installation requires careful handling to avoid damage and proper seating against the valve seat. Regular inspection during pump service helps identify balls that need replacement.
| Check valve action | Allows one-way flow of material |
|---|---|
| Sealing | Seats against valve seat to prevent backflow |
| Corrosion resistance | Stainless steel resists paints and solvents |
| Worn / pitted surface | Ball no longer seals against seat |
|---|---|
| Out-of-round | Ball deformed, cannot seal properly |
| Loss of prime | Pump loses prime frequently |
| Backflow | Material flows backward through valve |
Stainless ball 155-225 is compatible with the following models. Verify fit using your equipment's parts diagram.
| Compatible Models |
|---|
| Admiral |
| Commander |
When replacing the stainless ball, inspect these associated components to ensure proper valve function.
Check sealing surface for damage or wear.
Inspect for proper tension and condition.
Ensure ball moves freely within cage.