UNLOADER VALVE OVERHAUL KIT FOR OIL INJECTED SCREW COMPRESSOR

The unloader valve overhaul kit (2901162200) is a service kit for rebuilding the unloader valve on oil-injected screw air compressors. The unloader valve is what decides whether the compressor draws in air and builds pressure or runs unloaded, so keeping its internal wear parts in good condition supports steady pressure regulation and consistent air delivery. Supplied under a single part number, this spare part gathers the components needed for the overhaul, which is more cost-effective and simpler to order than sourcing each piece separately, and using the correct replacement parts helps maintain the air quality and performance the compressor was built to deliver.

The kit is the correct part for oil-injected screw compressors in the 40 to 120 hp (30 to 90 kW) class. Because the same commercial name can span several models and build variants, please confirm it matches your machine by part and serial number before ordering. If you would like help checking the kit against your compressor, or want to confirm exactly what the overhaul covers, get in touch with our team.