Abstract: A tube fitting for connection to a tube includes a main body structure and a tube liner. The main body structure is configured to receive an end of the tube and fluidly connect the tube to another component. The tube liner is positioned at least partially within the main body structure and is configured to extend into the tube. The main body structure and the tube liner are configured such that, when the tube is fully inserted into the tube fitting, the end of the tube is positioned at a predetermined depth within the tube fitting, and the main body structure and the tube liner cooperate together to provide an audible indication to indicate that the tube has been fully inserted into the tube fitting.

Abstract: A tube fitting for connection to a tube includes a main body structure and a tube liner. The main body structure is configured to receive an end of the tube and fluidly connect the tube to another component. The tube liner is positioned at least partially within the main body structure and is configured to extend into the tube. The main body structure and the tube liner are configured such that, when the tube is fully inserted into the tube fitting, the end of the tube is positioned at a predetermined depth within the tube fitting, and the main body structure and the tube liner cooperate together to provide an audible indication to indicate that the tube has been fully inserted into the tube fitting.

Abstract: A flexible heater connector can include a hose, a nut having a female tapered thread, and a fitting structure. The female tapered thread of the nut can engage a male tapered thread associated with the heater. The fitting structure can include a first portion to mechanically engage an inner wall of the hose, and a second portion mechanically coupled to the nut. The nut can be a swivel nut.

Abstract: A tube fitting for connection to a tube includes a main body structure and a tube liner. The main body structure is configured to receive an end of the tube and fluidly connect the tube to another component. The tube liner is positioned at least partially within the main body structure and is configured to extend into the tube. The main body structure and the tube liner are configured such that, when the tube is fully inserted into the tube fitting, the end of the tube is positioned at a predetermined depth within the tube fitting, and the main body structure and the tube liner cooperate together to provide an audible indication to indicate that the tube has been fully inserted into the tube fitting.

Abstract: A flexible heater connector can include a hose, a nut having a female tapered thread, and a fitting structure. The female tapered thread of the nut can engage a male tapered thread associated with the heater. The fitting structure can include a first portion to mechanically engage an inner wall of the hose, and a second portion mechanically coupled to the nut. The nut can be a swivel nut.

Abstract: A gas pressure regulator is disclosed that includes a reciprocating piston that engages and disengages from a seat to open the higher pressure and lower pressure sides of the regulator to one another. The regulator includes an elastomer seal between the seat and the piston that has an ignition rating sufficient to avoid combustion in the presence of oxygen at pressure differentials that are a factor of between 5 and 10 between the higher pressure and lower pressure sides of the regulator.

Abstract: A manifold assembly used to control the flow of oxygen in an oxygen concentrator system The manifold assembly provides a series of internal pathways which receive a primary and secondary relief valves via external orifices. The manifold reduces the number of component connections and potential leak paths for control and monitoring of process media.

Abstract: A diaphragm controlled bypass valve includes a diaphragm valve portion and a needle valve portion. The diaphragm valve portion regulates pressurized gas supplied from a pump to determine whether or not to open or close a needle valve. The needle valve portion includes an inlet port, an outlet port and a flow pathway defined between the inlet and outlet ports. A needle pin is disposed within the flow pathway and is coupled to a diaphragm positioned within the diaphragm valve portion. When the diaphragm is displaced in response to changes in pressure, the needle valve pin is likewise displaced which opens and closes the flow pathway.

Abstract: A diaphragm controlled bypass valve includes a diaphragm valve portion and a needle valve portion. The diaphragm valve portion regulates pressurized gas supplied from a pump to determine whether or not to open or close a needle valve. The needle valve portion includes an inlet port, an outlet port and a flow pathway defined between the inlet and outlet ports. A needle pin is disposed within the flow pathway and is coupled to a diaphragm positioned within the diaphragm valve portion. When the diaphragm is displaced in response to changes in pressure, the needle valve pin is likewise displaced which opens and closes the flow pathway. A second flowpath disposed in the needle valve portion communicates with the inlet port to redirect the supply of pressurized gas to a relief port.

Abstract: A cryogenic liquid cylinder pressure control manifold is disclosed. The manifold includes, in a unitary arrangement, a pressure build regulator, a pressure build inlet fitting, a pressure build regulator, NPT adapter fitting, a check valve, and a cylinder pressure gauge. The disclosed manifold eliminates various threaded connections associated with prior devices, thus providing a more reliable device having less likelihood to leak in service. The disclosed manifold also reduces labor costs associated with assembling prior systems which are composed of a plurality of different individual components. In one embodiment, the disclosed manifold is employed as a cryogenic CO2 manifold for use in the beverage industry.

Abstract: A manifold assembly used to control the flow of oxygen in an oxygen concentrator system The manifold assembly provides a series of internal pathways which receive a primary and secondary relief valves via external orifices. The manifold reduces the number of component connections and potential leak paths for control and monitoring of process media.

Abstract: A diaphragm controlled bypass valve includes a diaphragm valve portion and a needle valve portion. The diaphragm valve portion regulates pressurized gas supplied from a pump to determine whether or not to open or close a needle valve. The needle valve portion includes an inlet port, an outlet port and a flow pathway defined between the inlet and outlet ports. A needle pin is disposed within the flow pathway and is coupled to a diaphragm positioned within the diaphragm valve portion. When the diaphragm is displaced in response to changes in pressure, the needle valve pin is likewise displaced which opens and closes the flow pathway.

Abstract: A diaphragm controlled bypass valve includes a diaphragm valve portion and a needle valve portion. The diaphragm valve portion regulates pressurized gas supplied from a pump to determine whether or not to open or close a needle valve. The needle valve portion includes an inlet port, an outlet port and a flow pathway defined between the inlet and outlet ports. A needle pin is disposed within the flow pathway and is coupled to a diaphragm positioned within the diaphragm valve portion. When the diaphragm is displaced in response to changes in pressure, the needle valve pin is likewise displaced which opens and closes the flow pathway. A second flowpath disposed in the needle valve portion communicates with the inlet port to redirect the supply of pressurized gas to a relief port.