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An integral gas regulator and flowmeter unit. The unit has a housing body with a high pressure gas inlet, a low pressure gas outlet, and a receptacle. A passage communicates gas to a valve seat in the receptacle. A differential pressure piston having seals at each end is slidably received within the

An integral gas regulator and flowmeter unit. The unit has a housing body with a high pressure gas inlet, a low pressure gas outlet, and a receptacle. A passage communicates gas to a valve seat in the receptacle. A differential pressure piston having seals at each end is slidably received within the receptacle and is spring biased away from the valve seat. A first end of the piston cooperates with the valve seat for controlling gas flow into the receptacle. A bore within the piston communicates gas from the first end to a second end of the piston. A floating inner flow tube mounted on the second end of the piston receives gas from the bore. A ball is slidably received within the inner flow tube. An outer flow tube overlies the inner flow tube. Both tubes are arranged for being positioned in a normally vertical position and may be marked with graduations for indicating the ball position. Thus, the pressure of a gas is reduced from a high pressure to a desired lower pressure, and the flow rate of the gas is indicated. A low pressure gas passage communicates low pressure gas from the flowmeter to the outlet. A flow adjusting valve may be provided. A pressure gauge may also be included to indicate the pressure of the gas entering the unit.

대표청구항 ▼

An integral gas regulator and flowmeter, comprising: a housing body having a high pressure gas inlet, a low pressure gas outlet, and a receptacle; a valve seat within said receptacle; a high pressure gas passage in said housing body for communicating high pressure gas from said gas inlet to said val

An integral gas regulator and flowmeter, comprising: a housing body having a high pressure gas inlet, a low pressure gas outlet, and a receptacle; a valve seat within said receptacle; a high pressure gas passage in said housing body for communicating high pressure gas from said gas inlet to said valve seat and opening into said receptacle; a differential pressure piston slidably received within said receptacle and having a first end for cooperating with said valve seat for controlling gas flow into said receptacle, and a second end having a surface area relatively larger than said first end; a first gas seal on said piston adjacent said first end and a second gas seal on said piston adjacent said second end, each said seal being slidable against said receptacle; a bore within said piston for communicating gas from said first end to said second end; a pressure delivery spring extending between said housing body and said piston so as to bias said first end of said piston away from said valve seat; a floating inner flow tube mounted on a portion of said second end of said piston for receiving gas from said piston bore; a gas obstruction within said inner flow tube having a size so as to permit gas to flow through said inner flow tube, around and past said obstruction; an outer flow tube mounted on said housing body so as to overlie said inner flow tube and to define a gas plenum around said inner flow tube, such that gas may flow out of said inner flow tube and into said gas plenum; and a low pressure gas passage in said housing body for communicating low pressure gas from said gas plenum to said low pressure gas outlet, whereby the pressure of a gas is reduced from a high pressure to a desired substantially lower pressure, and further whereby the rate of flow of the gas is indicated by the position of said obstruction within said inner flow tube.