2901905800 Premium Air Oil Separator Element Kit for Oil-Injected Screw Compressor

Product Introduction

Stable differential pressure is where separator savings actually come from, not just lower oil carry-over. 2901905800 is listed across parts channels as an air/oil separator element or oil separator kit for Atlas Copco screw compressors, with cross references such as 1631105500 quoted by aftermarket suppliers. Oil-laden discharge air passes through the coalescing media, fine droplets merge and drain back to the lube circuit, and clean air leaves the tank. That barrier protects dryers, downstream filters, and pneumatic equipment while keeping lubricant in circulation.

Running it loaded forces the compressor to push air through rising restriction, which climbs power draw and pushes oil into the line. Replace on service hours or at the separator differential alarm, and inspect the scavenge return while the vessel is open—blockage or a misrouted tube can fake a bad separator even with a fresh core installed. Seat the gasket squarely, torque evenly, and check for leaks after run-in.

Match overall dimensions, flange or seal profile, central return, and anti-static grounding to the removed element before dispatch. Supplier figures for media grade, ppm, and service life vary with oil condition, intake dust, and operating temperature, so the old cartridge and machine serial stay the final fitment check. Also called oil gas separator, coalescing separator cartridge, air oil separator filter element.