Abstract: A hydrant valve assembly including a valve body including an exit end, a lip extending radially outward from the exit end, a valve seat and a first valve member selectively movable between a first orientation whereby the first valve member is not engaged with the valve seat and a second orientation whereby the first valve member is engaged with the valve seat. An annular retaining plate is supported on the exit end of the valve body and includes a first rod extending downwardly into the valve body, the first rod being arranged to selectively maintain the first valve member in the first orientation. A flange is detachably engaged with and concentrically arranged around the lip, and a barrel is supported on the retaining plate. A plurality of connectors extends through the barrel, the retaining plate and the flange for rigidly coupling the barrel to the retaining plate and flange.

Abstract: A snap-action valve assembly includes a valve flap positioned within a conduit for controlling exhaust flow through the conduit. A shaft supports the valve flap in the conduit for rotation about a pivot axis between a closed position and an open position. A guide is fixed to the valve flap. A torsion spring is positioned at least partially outside the conduit and includes a first end restricted from rotation in at least one direction. The torsion spring includes a second end coupled to the guide. The torsion spring is preloaded to urge the valve flap into contact with an inner surface of the conduit when the valve flap is in the closed position.

Abstract: Valve assemblies which comprise a valve housing; an inner valve element; an outer valve element spaced apart from the inner valve element; a valve stem on which both the inner valve element and the outer valve element are located; a portion of the valve stem between the inner valve element and the outer valve element is threaded; and a protective element located within the valve housing and covering the threaded portion of the valve stem.

Abstract: The invention concerns a valve arrangement for external operation including: a feed opening, a delivery opening, a connecting passage which connects the feed opening to the delivery opening, a first valve which is adapted to enable the fluid connection through the connecting passage in a first functional position and to close same in a second functional position, and an actuating device for actuating the first valve. Valve arrangements of that kind suffer from the disadvantage that they are not suitable for frost-resistant operation as freezing water can damage parts of the valve arrangement. That disadvantage is overcome by the invention insofar as there is provided a second valve which is closed in the first and second functional position and which co-operates with a drain opening which is so connected to the connecting passage that in a third functional position in which the first valve is closed and the second valve is opened the liquid in the connecting passage can flow away through the drain opening.

Abstract: An improved fire hydrant having a lower portion and an upper portion. Under normal circumstances the upper portion is simulated fire hydrant made of resilient plastic and connected to the lower hydrant by a special fitting attached to the rim of the hydrant and opened or closed by a key. The special fitting is fastened to a plate projecting upwardly from the lower hydrant. The plate is connected to the lower hydrant through a segmented collar that is secured around a flange of a basket housing. In case of a fire the simulated fire hydrant is replaced by a light weight metal portable hydrant on which the key is suspended, and transported on a fire truck. The portable hydrant has a plurality of dowels that fit into grooves located on an upper extension of the lower fire hydrant.

Abstract: A fire hydrant comprising an upper portion and a lower portion. The lower portion contains a water inlet valve and an operating rod for selectively opening and closing the valve. The upper portion of the fire hydrant includes a bonnet and collar with apertures in them respectively. The valve is opened and closed by a removable tool which is threaded through an opening in the upper portion of the fire hydrant and engages the operating rod to move it and thereby open the valve.

Abstract: A hydrant for controlling the flow of water from an underground supply includes a casing connected at its lower end to the supply and its upper end to a nozzle for delivery of water from the casing. The flow of water from the supply to the casing is controlled by a main valve operated by a handle on the hydrant casing. An ejector purge apparatus drains the casing after the flow of water through the casing has been terminated by the main valve in order to prevent frost damage. The ejector purge apparatus includes a purge valve controlling flow from the supply through a conduit to a location outside of the hydrant casing. The conduit includes a flow constricting element and a port adjacent the flow constricting element that is in fluid communication with the casing. Flow through the purge valve and the flow constricting element results in venturi evacuation of the water within the casing.