| Feature | Technical Details |
| Brand | Sullair (Genuine Original) |
| Part Number (P/N) | 250019-444 |
| Component Type | MPCV Service / Repair Kit |
| Primary Function | Maintain Minimum Internal Pressure & Prevent Backflow |
| Compatible Models | Sullair 185, 375, and Various Portable/Stationary Models |
| Kit Contents | Spring, Piston/Poppet, O-Rings, Gaskets, and Seals |
| Material | Stainless Steel and Viton/Nitrile Elastomers |
| Service Interval | Recommended every 4,000 to 8,000 hours |