A high pressure compressed air/gas/steam filter, incorporating a heavy main housing body, flanges that are rigidly secured to the top and bottom of the housing body, the housing body having an inlet, an outlet port, and a central cavity into which the operating filter cartridge element locates. A manifold cage assembly, incorporating a variety of seals, secures with a manifold plate, that likewise connects through the use of tie-rod the filter element in place, for high pressure filtration. Once the top flange is removed, the integrated manifold cage, its manifold plate, and its secured filter, can simply be upwardly removed with bolts or fasteners from the main body housing, the filter element cleansed, or replaced and only these removed components can then be reinserted back into the heavy filter housing body, for retightening of its upper flange in place, readying the high pressure filter for further application.