This inlet valve kit used to repair the inlet valve used on many Ingersoll Rand rotary screw compressors ranging from 20 to 30 horse power. The inlet valve is often referred to as the unloader valve, and this part may be referenced in your manual as a unloader valve kit. This kit is also known as part number 47690673001.
Included in the kit is the necessary spring, snap ring, and o-rings. It is recommended to use this kit every 2 years or 8,000 hours. If your compressor is slow to build air it may be from the inlet valve sticking and this repair kit is required.
The part number for the entire inlet valve is 54747399.
This inlet valve repair kit was most commonly used on the below rotary screw air compressors from Ingersoll Rand
Part #: 54774302
Part #: 54654652
Part #: 22064695
Part #: 38459582
Part #: 89295976
Part #: 54672654
Part #: 54749247