Abstract: A check valve for high flow medical gas applications is disclosed. The check valve includes a valve body that defines a flow channel through the valve body from an inlet to an outlet. A movable plunger is in the flow channel of the valve body, with the plunger being constrained in the flow channel between the inlet and the outlet. The plunger comprises a finned frustoconical inlet end a finned frustoconical tip at its outlet which act as flow directing elements which reduce inlet and outlet turbulence at higher medical gas pressures by reducing the gas flow turbulence within the flow channel.

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 medical gas alarm systems and associated methods are disclosed. A method of monitoring the medical gas system includes the steps of monitoring a characteristic of a medical gas system using at least one monitoring instrument positioned in a medical gas supply network; generating and sending a particular signal from the monitoring instrument to a CPU when the characteristic measured by the monitoring instrument passes a predetermined threshold; generating a fault signal from the CPU when the CPU determines that a fault condition has occurred; retrieving a stored message from the CPU in response to the fault signal, and in which the stored message other than the fault or threshold condition monitored by the instrument; and sending the stored message from the CPU to an output at a medical gas alarm module.

Abstract: A trim plate is disclosed that includes a base plate, a folding hook arm pivotally attached to the base plate, and a weight-bearing truss that supports the folding hook arm. A first end of the weight bearing truss is pivotally connected to the hook arm at about the middle of the hook arm and the second end of the truss is positioned in a primary slot in the base plate. Two secondary slots in the base plate are positioned on either side of the primary slot, and pins extend perpendicularly from the base plate end of the truss and fit in the secondary slots for sliding therein whenever the hook arm is open or closed.

Abstract: A trim plate is disclosed that includes a base plate, a folding hook arm pivotally attached to the base plate, and a weight-bearing truss that supports the folding hook arm. A first end of the weight bearing truss is pivotally connected to the hook arm at about the middle of the hook arm and the second end of the truss is positioned in a primary slot in the base plate. Two secondary slots in the base plate are positioned on either side of the primary slot, and pins extend perpendicularly from the base plate end of the truss and fit in the secondary slots for sliding therein whenever the hook arm is open or closed.

Abstract: A medical gas alarm systems and associated methods are disclosed. A method of monitoring the medical gas system includes the steps of monitoring a characteristic of a medical gas system using at least one monitoring instrument positioned in a medical gas supply network; generating and sending a particular signal from the monitoring instrument to a CPU when the characteristic measured by the monitoring instrument passes a predetermined threshold; generating a fault signal from the CPU when the CPU determines that a fault condition has occurred; retrieving a stored message from the CPU in response to the fault signal, and in which the stored message other than the fault or threshold condition monitored by the instrument; and sending the stored message from the CPU to an output at a medical gas alarm module.

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.