Abstract: An automated switchover device including a spring biased switchover regulator having a first inlet for receiving a first source of gas supply in the first inlet and a second inlet for receiving a second source of gas supply in the second inlet and an outlet shared by the first inlet and the second inlet. The device may include a motor and an adjusting screw coupled to the motor. The spring biased switchover regulator is configured to monitor and control a maximum and minimum pressure of the first inlet and the second inlet. The motor is configured to turn the adjusting screw in a first rotational direction or a second rotational direction based on a maximum and minimum pressure of the first inlet and the second inlet. The spring biased switchover regulator is configured to switch over from the first source of gas to the second source of gas due to the actuation of the adjusting screw by the motor to automatically provide a continuous gas supply.

Abstract: A cryogenic liquid switching system including an electronic control mechanism; a solenoid valve communicatively connected to the electronic control mechanism via an interface cable; a gas input control connected to the solenoid valve; and a pair of pneumatic valve actuators connected to the gas input control via separate isolation tubing components The system also including a pair of valve actuator pins, one each connected to a respective one of the pair of pneumatic valve actuators; a pair of pneumatic valves, one each connected to a respective one of the pair of valve actuator pins; and a cryogenic liquid input in fluid communication with at least a portion of each of the pair of pneumatic valves.

Abstract: A gas flow control device is provided in which a regulator body has an inlet bore and an outlet bore extending therein, into which inlet and outlet sleeves having highly polished inner surfaces are secured, with the inlet and outlet sleeves further having connected thereto, at an exterior of the regulator body, connectors for an inlet line, an inlet pressure gauge, an outlet line and and outlet pressure gauge. The inlet and outlet sleeves are made of corrosion-resistant tubing, as are the connectors, in a preferred embodiment.

Abstract: A gas flow regulator valve is provided with a metering valve and filter assembly including a drawn, generally cup shaped, or hat shaped filter element having a substantially flat end panel, a generally cylindrical sidewall and an open end opposite the end panel. An integrally formed flange, or rim, is formed around the open end and projects outwardly therefrom to provide means for mounting the filter, in a fluid-tight relation, in the metering valve assembly body. The filter is formed from a substantially planar disc-shaped blank of a multilayered screen material in which the respective layers are welded, or sintered, to one another to form a rigid, porous filter medium. The blank is shaped by a cup drawing operation of a filter mesh made of layers of woven smooth, corrosion resistant, fine gauge, high strength metal.