초록 ▼

The present invention uses a regulator in the form of dispensing check valve and a flow restriction arrangement to provide a virtually fail safe system for preventing hazardous discharge of fluid from a pressurized cylinder or tank. A diaphragm controls the movement of a check valve element to preve

The present invention uses a regulator in the form of dispensing check valve and a flow restriction arrangement to provide a virtually fail safe system for preventing hazardous discharge of fluid from a pressurized cylinder or tank. A diaphragm controls the movement of a check valve element to prevent discharge of gas from a tank unless a predetermined vacuum condition exists downstream of the check valve. A capillary tube or other structure that provides capillary size opening minimizes any discharge of gas in the unlikely event of a failure of the regulator. This system is particularly useful in the delivery of arsine gas and provides multiple safeguards against accidental discharge.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for controlling the discharge of pressurized fluids from the outlet of a pressurized tank, the apparatus comprising:a port body for communication with the outlet of a pressurized tank defining a fluid discharge path;a valve element fixed in or upstream of the

[ What is claimed is:] [1.] An apparatus for controlling the discharge of pressurized fluids from the outlet of a pressurized tank, the apparatus comprising:a port body for communication with the outlet of a pressurized tank defining a fluid discharge path;a valve element fixed in or upstream of the port body and adapted for movement between a sealing position that blocks fluid flow through the fluid discharge path and an open position that permits fluid flow along the fluid discharge path; anda diaphragm defining an interior volume isolated from the pressure condition upstream of the valve element and engaged with the valve element to control the movement of the valve element in a manner that retains the valve element in the sealing position until a pressure differential between the interior volume of the diaphragm and the interior of the port body moves the valve element to the open position.