Abstract: A water valve comprises a housing in which a spring biased slider moves between a sealing wall and a sliding wall normal to the liquid flow direction, the spring contacting the sliding wall of the housing.

Abstract: An improved petcock for controlling the flow of a liquid from a container. The petcock includes a housing comprising an inlet and outlet passage joined at their inner ends by a frusto-conic valve chamber opening external of the housing through a circular passageway. A valve member shapped to conform to the walls defining the valve chamber and circular passageway and positioned therein so as to provide sliding contact therewith when the valve member is selectively rotated. The valve member includes a bore through its base portion for passing liquid when aligned with the inlet and outlet passage and restricting fluid flow when misaligned. Sealing means is provided for sealing the housing to the tank, between a portion of the valve member and the valve chamber and between the circular portion of the valve member and an outer housing cover. Locking means is provided to selectively lock the valve member in either an "on" or "off" selected position.

Abstract: A valved serviced outlet for oxygen having a number of improved features including an improved guiding and locking means, an improved door, improved valving means and an improved valve body.

Abstract: External leakage around the actuator-stem of a plug valve is prevented by the application of forces to the lower surface of the valving member whereby to normally advance and maintain sealing surfaces on the upper end of the valving member against and in sealing relationship with a diaphragm.

Abstract: Safety device for controlling a valve. For application to a valve for controlling fluid flow, there is provided a normally inoperative device which the operator must consciously and deliberately render operative before the valve can be changed from one setting to another. In the illustrated embodiment, a valve activating device is held in inoperative position by suitable resilient means. To render same operative, the operator pushes the operating device against such resilient means into engagement with a desired portion of the valve for effecting the desired operation. As shown, such operating means automatically disengages only in one selected position of the valve, such as the "off" position, but remains engaged while the valve is in the other position, such as the "on" position. It is, however, possible by a simple modification to render same automatically disengageable as the valve attains either position.

Abstract: A ballcock assembly in which a sheath extends upwardly through the fluid within a reservoir tank to support a valve mechanism above the normal level to which fluid will rise in the reservoir tank. An inlet tube which connects a fluid supply line to the valve mechanism extends through the sheath and is wholly isolated from the fluid within the reservoir tank by the sheath. The outermost lateral dimension of the inlet tube and the innermost lateral dimension of the sheath are such that the inlet tube is completely circumscribed by an air space comprising a passageway that extends the full axial extent of the inlet tube between its effective connection to the valve mechanism and its effective connection to a fluid supply line. The passageway is required to communicate with atmosphere at a level beneath the fluid in the reservoir tank and may also communicate with atmosphere at a level above the normal level to which fluid will rise within the reservoir tank.