Patent ID: 7384004

Claim:
A kit, comprising a retrofittable pressure gauge and a valve bushing of a spreader valve or a trigger operated fluid valve of a spray gun; wherein said pressure gauge comprises: a case having a pressure chamber; a pressure sensor located in the pressure chamber; and a mounting fixture attached to the case and comprising two opposite end faces, a through bore extending between said end faces for mounting the pressure gauge at the spreader valve or the trigger operated fluid valve of the spray gun, and a passageway other than said through bore, said passageway providing fluid communication between the pressure chamber and the bore, said passageway having an opening on a side wall of said bore; and wherein said valve bushing and said mounting fixture have a mounting position in which said valve bushing has a first section defining a shoulder engaging with one of the opposite end faces of said mounting fixture, a second section located in said bore and extending from the first section towards the other end face of said mounting fixture, and a third section extending from the second section beyond and away from the other end face of said mounting fixture.