Abstract: A no-drip valve apparatus for regulating a fluid flow from an inlet to an outlet. A pressure activated supply valve means controls the flow of fluid through the valve. A partition member cooperates with a vacuum chamber to retract and retain any remaining oil in the valve or the oulet nozzle when the pressure activated supply valve means cuts off the flow of oil through the valve. The partition member is resiliently displaced by pressure fluid from a supply chamber adjacent the inlet and is displaced in one direction prior to flow of fluid to the outlet and is displaced in the other direction upon termination of the flow of fluid through the outlet.

Abstract: A valve for incorporation in a fuel line, between a pump and a fuel burner, has a valve chamber and a valve member in the chamber. The valve member normally closes a connection from the pump to the burner, but opens this connection in response to a suitably raised pump discharge pressure. Means are provided whereby, upon the shutting off of such pump discharge pressure, the valve, by magnetic action not only closes but momentarily causes fuel to be drawn from the line to the burner, to prevent fuel from dripping out of the burner and from thereby causing smell, spillage or clogging of the burner.

Abstract: Purging apparatus for removing air from a fluid conduit is shown in the form of a burner nozzle which automatically purges air from the nozzle elements to thereby limit post-drip of liquid fuel from the nozzle. The nozzle is designed with a partitioning element within the nozzle adjacent the burner tip having at least one passage of limited cross-section which, in response to flow of liquid fuel therethrough, disperses or atomizes air bubbles which may be entrapped within the nozzle assembly. Several embodiments are illustrated and described in which a restricted passage in the partition is positioned adjacent the top of the interior chamber of the nozzle holder to pick up air bubbles and eject them through the nozzle tip.

Abstract: In a non-drip valve for a fluid flow line having a vacuum unit comprising supply chamber, a discharge chamber and a vacuum chamber connected to the discharge chamber to withdraw fluid therefrom when the forward flow is arrested, an improved control valve controlling the flow of fluid from a source to the supply chamber comprising a ball element operable between alternate positions, one of which admits fluid from the source of supply to the supply chamber and blocks the flow of fluid from the supply chamber to a return line, and the other of which blocks flow of fluids from the supply source to the supply chamber and simultaneously affords flow of fluid from the supply chamber to the return line, the position of said ball element being controlled by the armature of a solenoid.

Abstract: The present invention relates to a specially designed valve for incorporation in a fuel line between a pump and burner nozzle. In a preferred embodiment my valve device sucks back a limited amount of fluid after the valve is shut off.

Abstract: In a non-drip valve for a fluid-flow line having a supply chamber, a discharge chamber and a vacuum chamber connected to the discharge chamber to withdraw fluid therefrom when the forward flow is arrested, pressure-responsive valve means controlling the forward flow from the supply chamber to the discharge chamber, and relief valve means to permit reverse flow bypassing said pressure-responsive valve when it is closed. Preferably a selectively-operable valve is provided to put said pressure-responsive valve in working condition.