Abstract: A valve comprising a valve housing having a flow passage extending through the valve housing and a cavity communicating with the flow passage, a valve seat in the flow passage, a diaphragm extending across the cavity to define a control chamber on one side of the diaphragm and a valve element for controlling the flow of fluid through the flow passage. The valve element is mounted for pivotal movement about primary and secondary pivotal axes. The opening and closing of the valve element is controlled by the pressure in the control chamber.

Abstract: A diaphragm operated valve including a valve housing having a passage extending therethrough with an inlet and an outlet and a cavity communicating with the passage. A diaphragm extends across the cavity to define a control chamber on one side of the diaphragm. The other side of the diaphragm communicates with the passage. A passageway in the valve housing leads to the control chamber so that the pressure in the control chamber can be varied. A diaphragm support having an opening therein is mounted in the cavity to support the diaphragm, and a vlave element is pivotally mounted within the valve housing for cooperation with the valve seat. The valve seat forms an acute angle with the axis of the passage through the valve housing to minimize pressure losses.

Abstract: A positive-action non-leaking shut-off valve that requires minimal arcuate movement of the manual actuator from full-open to full-closed position is provided by three major components. A valve housing has a water-flow channel therethrough along its longitudinal axis and a cylindrical bore through said valve housing transversal to said water-flow channel. A lever-actuated valve shaft fits snugly into said bore. The valve shaft carries a plug therein that is centered for rotation about the centerline of the bore through the housing. The plug stoppers the water-flow channel when it is rotated against the openings that the water-flow channel makes with the cylindrical bore.

Abstract: An automatic controller comprising a supporting structure, a plurality of adjustable contacts, and a selector mounted for movement on the supporting structure for sequentially engaging each of the contents. The adjustable contacts are mounted on the supporting structure for movement relative to each other along a path from a relatively stacked condition to a relatively fanned out condition. In the fanned out condition, each adjustable contact can project beyond at least one adjacent adjustable contact a variable amount so that the extent of exposure of each adjustable contact can be adjusted. The selector sequentially engages the exposed portions of the contacts to sequentially make and break a plurality of circuits.