Keep rocks, grit, dried paint and other potentially hazardous contaminants from getting into your pump and causing serious trouble by replacing your inlet strainer (aka rock screen) often. A particle as small as a grain of sand in your pump can quickly destroy your packings and cause eventual pump failure. A good strainer will filter out any damaging particles while still flowing well enough to keep the pump's gun well fed with paint.
Graco Magnum DX
Graco Magnum XR-5
Graco Magnum XR-7
Graco Magnum XR-9
Note:This strainer has a 3/4" garden hose thread.