Telescoping waterway with integrated valve
A telescoping waterway component for use in firefighting equipment has a multi-piece outer tube and a telescoping inner tube through which fluid flows. An inlet component is selectively positionable at different inlet heights along the outer tube and can be positioned to provide different inlet angles. A rotating shutoff element is mounted within a manifold of the inlet component. The inner tube can be retracted to nest within a hollow cross-section of the shutoff element when that element is closed. A valve interlock disables an operator from rotating the shutoff element while the inner tube is retracted, or from retracting the inner tube while the shutoff element is open.
1. A telescoping waterway component that is for use in firefighting equipment and has:
a manifold that forms part of a waterway and is arranged to control a flow of fluid through the waterway;
a rotating shutoff element that rotates about an axis with respect to the manifold between a) an open position and b) a closed position in which the rotating shutoff element blocks the waterway and leaves a hollow cross-section within the manifold; and
a telescoping inner tube that forms part of the waterway and moves between a) an extended position and b) a retracted position in which at least a portion of the inner tube nests within the hollow cross-section left within the manifold when the rotating shut-off element is in the closed position.
2. The telescoping waterway component of claim 1 , that also has a valve interlock that disables an operator from rotating the shutoff element when inner tube is not in the extended position.
3. The telescoping waterway component of claim 1 , that also has a waterway interlock that disables an operator from retracting the telescoping waterway when the rotating shutoff element is not in the closed position.
4. The telescoping waterway component of claim 1 , that also has:
a switch that is only triggered when the inner tube is in a fully extended position; and
an interlock device that is arranged to disable an operator from opening the valve when the momentary switch is not triggered.
5. The telescoping waterway component of claim 1 , that also has:
a switch that is only triggered when the rotating shutoff element is in a fully closed position; and
an interlock device that is arranged to disable an operator from retracting the waterway when the momentary switch is not triggered.
6. The telescoping waterway component of claim 1 , in which the manifold has a pair of opposed openings, at least one of the openings being configured to serve as or connect to a connection inlet through which fluid enters the manifold, another of the openings being configured to connect to an outer tube through which the inner tube moves, and at least one of the openings being configured to provide an alternate connection point that enables the connection inlet to be selectively positionable at different inlet angles with respect to the waterway.
7. The telescoping waterway component of claim 1 , in which the manifold has an opening that connects to an outer tube component that forms part of the waterway and is comprised of multiple segments that can be connected in different orientations, enabling the manifold to be selectively positionable at different inlet heights along the waterway.
8. A telescoping waterway component that is for use in firefighting equipment and has:
an outer tube that forms part of waterway through which firefighting fluid flows; an inlet component that is arranged to enable a flow of fluid into the waterway, is selectively positionable at different inlet angles with respect to the waterway, and has a rotating shutoff element that rotates about an axis with respect to the inlet component between a) an open position and b) a closed position in which the rotating shutoff element blocks the waterway and leaves a hollow cross-section within the inlet component; and
a telescoping inner tube that forms part of the waterway and moves between a) an extended position downstream of the inlet component and b) a retracted position in which the telescoping inner tube nests within the hollow cross-section left within the inlet component when the rotating shut-off element is in the closed position.
9. A telescoping waterway component that is for use in firefighting equipment and has:
an outer tube that forms part of a waterway through which firefighting fluid flows;
an inlet component that is arranged to enable a flow of fluid into the waterway, is selectively positionable at different inlet heights along the waterway, and has a rotating shutoff element that rotates about an axis with respect to the inlet component between a) an open position and b) a closed position in which the rotating shutoff element blocks the waterway and leaves a hollow cross-section within the inlet component; and
a telescoping inner tube that nests within the hollow cross-section left within the inlet component when the rotating shut-off element is in the closed position.