Vacuum regulator valve

Claim 1

An adjustable vacuum regulator valve comprising a valve body having an inlet port and outlet port; a removably secured threaded cap for said valve body cooperting with said valve body in defining a chamber within said valve body, said removably secured cap of said valve body containing an atmospheric vent passageway; a flexible diaphragm secured within said chamber defined by said valve body and said removably secured cap; an adjustable needle-nose stem valve vertically movable, longitudially disposed within said valve body having a vertical longitudinal passageway therethrough for communication between said inlet port and said chamber, said adjustable needle-nose stem valve having a circumferential annular indent in coopertion with said vertical lonitudinal passageway in said adjustable needle-nose valve to permit said longitudinal vertical passageway to be in communication with said inlet port when said adjustable needle-nose stem valve is rotatably positioned upwardly or downwardly within said valve body, said adjustable needle-nose stem valve cooperating with said flexible diaphragm to set vacuum; means for securing said adjustable needle-nose stem valve comprising a lock nut secured to said adjustable needle-nose stem valve and cooperating with said valve body to secure said adjustable needle-nose stem valve in the desired position; means for communication between said chamber and said outlet port said means for communication comprising a passageway of said valve body.