Abstract: A valve comprising an inlet housing, an outlet housing, an elastomeric valve element having a generally dome-shaped configuration with a central integral stem positioned substantially concentrically therewith, the inlet housing and outlet housing being fastened together at a joint with the elastomeric valve element positioned therein and the valve element including a plurality of longitudinal ribs formed along an outer annular periphery of a lower end of the dome-shaped configuration that define flow channels that allow fluid flow from across an upper surface of the dome-shaped configuration through the flow channels.

Abstract: A needleless access vial, including a vial, a valve for sealing the vial, the valve comprising a valve element positioned in a valve body, a retainer positioned about the valve body, valve element and a portion of the vial to sealingly sandwich the valve element between a portion of the vial and the valve body and the valve element comprising a central passageway including a slit formed therein for receiving a neck of an access device such as a syringe.

Abstract: A free floating disc check valve is provided by the present application. The check valve includes a seal disc having an integral truncated torroidal shaped portion. The torroidal shaped portion provides structural rigidity to the seal disc to minimize deflection of the disc under higher differential fluid pressures. The torroidal shaped portion of the disc cooperates with finger-shaped projections inside the valve body to limit lateral displacement of the disc relative to the axial flow of the fluid. The torroidal shaped portion and the flat portion of the disc form a cup shape that creates a hydrodynamic force that assists in moving the disc to an opened or closed position. In one embodiment, the seal disc is made of an elastomeric material that is coated with a dry film lubricant. In another embodiment, the seal disc is made of a low density silicone.

Abstract: A valve comprising an inlet housing, an outlet housing, an elastomeric valve element having a generally dome-shaped configuration with a central integral stem positioned substantially concentrically therewith, the inlet housing and outlet housing being fastened together at a joint with the elastomeric valve element positioned therein and the valve element including a plurality of longitudinal ribs formed along an outer annular periphery of a lower end of the dome-shaped configuration that define flow channels that allow fluid flow from across an upper surface of the dome-shaped configuration through the flow channels.

Abstract: A pressure relief valve having a modular design that allows the release pressure of the valve to be altered during assembly is provided by the present invention. The valve includes a serrated valve tube that fits inside of a valve body. A spring retainer ring fits on an outside diameter of the serrated valve tube such that it is held in position by interacting with the serrations. The release pressure of the valve is altered by changing the position of the spring retainer ring on the serrations. In addition, a variety of different spring types and configurations can be utilized in conjunction with the spring retainer ring position to select one of a large number of different release pressures for the valve during assembly.

Abstract: A free floating disc check valve is provided by the present application. The check valve includes a seal disc having an integral truncated torroidal shaped portion. The torroidal shaped portion provides structural rigidity to the seal disc to minimize deflection of the disc under higher differential fluid pressures. The torroidal shaped portion of the disc cooperates with finger-shaped projections inside the valve body to limit lateral displacement of the disc relative to the axial flow of the fluid. The torroidal shaped portion and the flat portion of the disc form a cup shape that creates a hydrodynamic force that assists in moving the disc to an opened or closed position. The seal disc is made of an elastomeric material that is coated with a dry film lubricant.

Abstract: A needleless access vial, including a vial, a valve for sealing the vial, the valve comprising a valve element positioned in a valve body, a retainer positioned about the valve body, valve element and a portion of the vial to sealingly sandwich the valve element between a portion of the vial and the valve body and the valve element comprising a central passageway including a slit formed therein for receiving a neck of an access device such as a syringe.