The Ingersoll Rand 47587639001 inlet valve is used to replace the main inlet/unloader valve on the RS15-22 series rotary screw air compressors. The inlet valve is often referred to as the unloader valve, and this part may be referenced in your manual as a unloader valve or intake valve
This inlet valve repair kit was most commonly used on the below rotary screw air compressors from Ingersoll Rand
38459582
47593353001
24900342
24900433
47581604001
47637065001