Patent ID: 7716798

Claim:
A method of replacing a valve seat in an airless spray gun, comprising: releasing pressure from an airless paint gun and an airless paint gun line; disassembling the airless paint gun having an original valve seat therein; cleaning a diffuser nut; removing the original valve seat; inserting a replacement valve seat into the airless paint gun, the replacement valve seat comprising an annular disk having a central opening; using a multifunction tool to properly seat the replacement valve, the multifunction tool comprising a seating grip and a grasping grip that accommodate a hand; the seating grip and the grasping grip coupled together at an end, the end accommodating a razor; the seating grip comprising a replacement seat setting that accommodates a valve seat of an airless spray gun, replacement seat setting comprises a first secure ridge and a second secure ridge, each of the first secure ridge and the second secure ridge perpendicularly traverse the edges of the seating grip, the first secure ridge and the second ridge being spaced apart to accommodate a replacement airless air gun valve therebetween, a shaft portion and a tip that allows the replacement seat setting to function as an emitter punch, the tip located between the first secured ridge and the second secured ridge the grasping grip comprises a gripper, the gripper adapted to accommodate a valve element; and reassembling the airless paint gun.