42421347 inlet valve rebuild kit contains all parts needed to rebuild the inlet valve and many Ingersoll Rand ESP series of rotary screw air compressors. This kit was specifically used with the older style ICV3 inlet valves.
It is recommended to use this kit every 8,000 hours or 2 years. If your compressor is slow to build air or it leaks from the inlet valve, this kit may solve the issue. Often times this is refered to as an Unloader Repair Kit.
The 42421347 kit contains the following rotary screw compressor parts.
42421347 is an OEM part manufactured by Ingersoll Rand. There were several different inlet valve repair kits used on the Ingersoll Rand ESP series. We highly recommend giving us a call to confirm this is the correct item for your air compressor.