Sullair 02250050-633 Minimum Pressure Valve Repair Kit

The Sullair 02250050-633 is a dedicated repair service kit designed to refurbish the minimum pressure valve (MPV) assembly on Sullair rotary screw air compressors. This kit contains all necessary elastomeric seals, backup rings, and internal hardware required to restore the valve's sealing integrity and pressure regulation function. The minimum pressure valve maintains a minimum receiver pressure (typically 4 PSI) to ensure proper lubrication circulation and prevents reverse flow of compressed air during shutdown. The kit addresses wear points that cause pressure drop, oil carryover, or failure to build pressure. It is engineered to meet original equipment specifications for dimensional accuracy and material compatibility with compressor lubricants.