Intake valve repair kit 287838 replaces the carbide seat at the foot of displacement pump 287834, the lower inside the RPS 2900 pump fitted to RoadLazer RoadPak and RoadPak HD line striping systems. It is supplied as a complete kit with the carbide seat, the 38.1 mm stainless intake ball and the o-ring packing, so the whole intake end goes back together in one hit.

The intake valve is the first thing to suffer on a striping pump. It takes the full load of abrasive traffic paint on every up stroke, and once the seat is pitted the pump loses prime, struggles to pick up out of the drum, or drops pressure on the up stroke. Carbide is used here precisely because it outlasts steel in that duty.

Unlike the piston valve kit, this one includes its ball. Position and rebuild procedure are in manual 311485 below, reference 212.