Ingersoll Rand 85542058 Minimum Pressure Valve Assembly

The Ingersoll Rand 85542058 minimum pressure valve (check valve) is designed for rotary screw air compressor packages. It maintains minimum receiver pressure during unloaded operation to ensure lubrication system circulation and prevents compressed air backflow through the inlet during shutdown. The valve assembly features a spring-loaded poppet design with bronze or stainless steel internals and cast aluminum or iron body. It is a direct replacement for Ingersoll Rand OEM part numbers 85542058, 39477369, 99289860, 23521297, and 99290132. Compatible with Ingersoll Rand SSR series screw compressors including M200-2S-LV and M250-2S-L models. Installation requires verification of compressor model and serial number for correct fitment.