Flushing device with removable drain ring for potable water systems
AssigneeJohn C. Kupferle Foundry Company
InventorDaniel G. McKeague
Life of this patent
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Abstract
A drain ring adapted for use in a device for flushing a dead-end of an underground municipal water distribution system includes a pair of annular seals and a channel between the seals, an outlet passage extending from inside the ring to the channel, and a flapper adapted to close the outlet passage under the influence of at least one of pressure and flow. The drain ring is removably positioned between a shut-off valve and an outlet of the device.
Claims20
A device for flushing a portion of an underground municipal water distribution system, the device comprising:
- an inlet adapted for receiving pressurized water from the water distribution system,
- an outlet fluidly connected to the inlet conduit and adapted for discharging pressurized water from the inlet,
- a valve adapted for controlling the flow of pressurized water between the inlet and the outlet, and
- a drain hole and a removable drain ring between the valve and the outlet, the drain ring comprising a valve activated by at least one of flow and pressure to close the drain hole.
A drain ring adapted for use in a device for flushing a dead-end of an underground municipal water distribution system, the drain ring comprising a pair of annular seals and a channel between the seals, an outlet passage extending from inside the ring to the channel, and a flapper adapted to close the outlet passage under the influence of at least one of pressure and flow.
A device adapted for flushing a portion of an underground municipal water distribution system, the device comprising:
- a first vertical pipe having an underground drain hole therein,
- a removable drain ring slidable with respect to the pipe, the drain ring comprising a pair of spaced-apart annular seals engaging the first vertical pipe, a channel between the seals, a passage between an inner portion of the ring and the channel, and a valve adapted to close the passage under at least one of flow and pressure, the channel being in fluid communication with the drain hole.
Dependencies are inferred from the claim text.