A safety valve including a brass valve body having a through bore provided with a circular sharp-edged valve seat and another sharp edge. A valve stem carrying a ball valve and a biasing spring dispos

The invention is for a safety valve for a piping system. The safety valve has a cylindrical housing, a piston assembly with two disc-shaped pistons, each piston having at least one orifice defined the

For use with a safety relief valve, a pilot valve is disclosed. The preferred and illustrated embodiment of the pilot valve incorporates a pressure moved spindle within a housing, the housing being dr

A safety gas valve for hoses feeding gas-powered equipment. The valve is in the form of a separate unit which may be permanently or temporarily connected to a flexible hose, which hose has a proximal

Subsurface apparatus and method for using same in a hydrocarbon producing well to enable retrieval of a full opening subsurface safety valve mounted in the well tubing without disturbing the major por

Apparatus and method of controlling a surface safety valve and a subsurface safety valve in a producing hydrocarbons well, comprising: providing a self contained control circuitry including a reservoi

A non-refillable safety valve for a pressure container. The valve includes a housing, having a central bore, which provides communication between a port and the pressure container for charging and sel

A safety ignition valve for a pilotless burner comprises a valve body having an inlet for connection to a fuel supply, an outlet for connection to the burner and a valve seat between the inlet and out